In contrast, a V-rated tire’s top speed is slightly faster than an H-rated tire, around 149 mph. Tire Designation. V 240 km/h. Everyday savings and free shipping in. The speed rating denotes the maximum speed at which a tire can safely operate. The first is the speed rating. V is 149 miles per hour. However, H and V also have obvious differences that you need to consider. Both H and V rated tires fall under the category of performance-touring tires, designed to provide better handling and. The speed rating is usually included in the tire size and performance code, which can be found on the tire’s sidewall. Also called the performance rating, the letter (or letter/number combination) rates the tire’s performance in dissipating heat, cornering, braking, and steering. W is the speed rating. A 107t tire can operate at speeds up to 190 km/h, whereas a 107h tire can safely reach speeds up to 210 km/h. Pros. Advantages and Limitations of T Speed Rated Tires. Number 65: ratio of the height of the sidewall to the width of the tire. The T and S ratings indicate speeds up to 118 mph (190 km/h) and 112 mph (180 km/h) respectively, making them suitable for everyday passenger vehicles. The ’95’ signifies a load index of 95, meaning the tire can bear up to 690 kg of weight. You can easily find out the tyre speed rating by looking at the tyre markings on the existing tyres. S, H, and V were the original three developed and is why H is out of alpha order. They represent: ‘H’: A tire rated for speeds up to 130 MPH. T - Up to 190 km/h. For S-speed-rated tires, it's 112 mph; for T, 118 mph. The speed rating code is semi-alphabetic and goes like this: B: 50 kph 31 mph. For S-speed-rated tires, it's 112 mph; for T, 118 mph. U 200km/h Sedans & Coupe Tyres. Also, while I understand the basic gist of a speed rating, I’m really confused why Hyundai chose a (W) rated tire for a vehicle like the Elantra with a 2. V Speed Rating: Max speed limit of 240 mph. Typically, the Z, W and Y ratings appear on summer tires or competition tires commonly found on sports cars, tuners, exotic cars and other vehicles built for thrilling UHP performance. Speed ratings are based on laboratory tests in which the tyre is run at 6. Next is the speed rating, which is indicated by a letter. There's a group of letters and numbers on the side. The major difference between speed rating tires H and V is the tempo. But there is a little more to that. J: 100 kph 62 mph. Remember, driving within safe speed limits ensures optimal tire performance and longevity. ‘H’ stands tall and says, “I can keep up until 130 mph. These speed ratings provide a more precise indicator of a high performance tire’s speed over 149MPH. A V-speed-rated tire is one that can comfortably endure speeds up to 149mph or 240kph. Meanwhile, W and Y ratings are often used by performance-focused cars such as the BMW M4 and its rivals which. ” Traditionally, Crivoi explains, a V speed rating would be for an HP tire, while a W or Y speed rating would be for a UHP tire. A load index is an assigned numerical value that signifies a tire's maximum load carrying capacity. Note that speed ratings in the UK are listed in kmph, not mph. Based on the tire rating system, you will have an informed choice. The V rating has a top speed of 149 mph, making it suitable for high-performance cars. Tyre speed ratings should be matched to the official top speed of your car. For those who don't know, a speed rated tire means the tire passes a test where the tire, mounted against a test wheel in a lab, is held at the rated speed for 10 minutes. Only worry about the speed rating unless it's very low, or you plan on tracking your car and getting it to very high sustained speeds. SIZE RANGE: 14" – 17" UTQG: 460 A A SPEED RATING: S, T, H & V Find My Tires. The tires with a rating from M to W, are designed to perform at top-speeds from 130mph to 186mph. It might not seem to fit in our chart, but the tire speed rating H is rated for up to 130 mph. (Y) 189. In this case, the “H” is the tire’s speed rating. So if the Z rating is still used, it must be in conjunction with the W as. Not so simple, the original equipment tire is the Bridgestone Turanza EL400-02 with a H speed rating, UTQG rating 300AA and tread depth 11/32". We recommend that you fit the correct speed rated tyre as recommended by the manufacturer of the vehicle. Manufacturer Special Warranty: 60 days satisfaction warrantyThe N5000 Plus features an innovation simple in its concept, but brilliant in its function. For example, if you look at the image below. If it can handle over 186 mph (300 km/h), it must have a “ZR” in the description. The. • V - up to 149 mph. W-rated tires are designed to handle speeds up to 168 miles per hour, while V-rated tires can manage rates up to 149 miles per hour. Firstly, it’s free, which is a huge advantage for those just starting out in music production. A “V” rated tire on the other hand is designed to operate at a maximum speed of 149 mph, almost twenty miles an hour more than the “H” rated tire. When it was first established, the Z speed rating was the highest rating and was assumed to be the highest speed rating that. Thus, 88H tires are better suited to vehicles that require more speed capacity. Z-rated tires are not designed to be used at speeds below 149 mph. Treadwear and durability. The Nexen N’Fera SU1 has a speed rating of V, W, and Y and has a UTQG rating of 300 AA A. On the sidewall of every tire, you'll find one of these speed rating codes: M - Up to 81 mph; N - Up to 87 mph; P - Up to 93 mph; Q - Up to 99 mph; R - Up to 106 mph; S - Up to 112 mph; T - Up to 118 mph; H - Up to 130 mph; V - Up to 149 mph; W - Up to 168 mph; Y - Up to. Above 300 km/h or 186mph. (Y)**. Speed rating corresponds to the maximum speed that a tire can sustain when it is carrying the recommended load capacity. The letter designation in the tire rating, such as ‘H’ or ‘V’, represents this speed rating. What I would do is buy 4 good H. H-rated tires can handle a maximum speed of 130 mph, while V-rated ones are good for up to 149. Both can carry the. Performance in light snow conditions is superior to its predecessor, the CP672. For instance, a 2022 Chevrolet Trailblazer LS comes with 225/60R-17 99H tires. H-rated tires can handle a maximum speed of 130 mph, while V-rated ones are good for up to 149. The rating system uses letters from A to Z. 50 nominal section widths are rated for 75 mph. For example, let’s consider the following code: 225/50R17 94W. The tyre speed rating is represented by a letter at the end of a string of numbers. You can find out more about this in the table below. They are often found on sports cars and high-performance vehicles that demand excellent handling and stability at elevated speeds. That’s because Z-speed tires were meant to represent speed ratings higher than 149 mph. Tire Speed Rating H Vs T. W - Up to 270 km/h. The speed rating is another essential part of your tire’s performance. Nowadays, it means 149 mph but. This means if you have a V-rated tire, it's designed to perform well at speeds up to 149 mph. Sport Sedans, Coupes & Sports Cars. M 130km/h Spare Tyre. Speed Rating H As mentioned above, the. 186. A high-occupancy vehicle lane on Interstate 5 in Seattle. We would like to show you a description here but the site won’t allow us. It’s a speed rating - your car must be rated to be capable of a top speed that exceeds the limit of the H rating. The lowest ratings are. Brands rate most of their tires at 99 mph or higher. Elsewhere on your tyres you will see the manufacturer’s name, the name of the tyre. J: 100 kph 62 mph. ” It represents a maximum speed of 210 km/h and is commonly found on sports sedans and coupes. Representing maximum driving speed for this tire, based on the manufacturer’s recommendation. The speed ratings are established by engineers who run the tyres in ten-minute increments until the desired speed has been met. G: 90 kph 56 mph. Nowadays, it means 149 mph but no higher. H ratings). ZR. R: These tires are usually found on heavy-duty trucks, and their maximum allowable speed. Speed ratings are represented by letters ranging from A to Z. The W rating replaced what was once Z, which was anything above 149 at the time, and is now limited to 168 mph. It`s not just an issue above 168 mph as some may think. About Tyre Speed Ratings. Speed rating: H (130 mph) or V (149 mph) Treadwear warranty: 60,000 to 90,000 miles Typical wheel size: 16 to 20 inches. R 106 mph 170 km/h. In earlier incarnations of the speed rating system, “H” stood for “high performance,” which is why it maintains an unusual position in the speed rating spectrum today. H is the speed rating. The W tire speed rating is higher than the V tire. g. 186 mph. 100V represents the load index and the. PREMIUM STANDARD TOURING ALL-SEASON. Check Pricing. 0 1. These beauties are built to last for an extended period. Meanwhile, the letter V that follows the load index shows the speed rating of the vehicle. This tire comes with a 25,000-mile warranty. Passenger touring tires are often T-rated or H-rated, while ultra-high performance tires tend to have a speed rating of V, W, or Y. Here are some of the irregularities to know about when reading speed ratings: The “H” rating is between the “U” and the “V”, not after the “G”. You'll usually find the speed rating — represented by a letter — after the tire's size info, paired with the load rating. In the context of tires, ‘H’ and ‘V’ are speed ratings. The letter W denotes the maximum speed rating, which translates 168 mph—not something intended for mom's minivan. The most common speed ratings are: -S: Up to 112 mph (180 km/h) -T: Up to 118 mph (190 km/h) -U: Up to 124 mph (200 km/h) -H: Up to 130 mph (210 km/h) -V: Up to 149 mph (240 km/h) -W: Up to 168 mph (270 km/h) To check your tire’s speed rating, simply look for the letter code on the sidewall of the tire. The below table shows the max speed for each speed rating: 119Q vs 114Q. The Speed Rating (like T, S, Q, H, R, V, W) indicates the top speed your tire can safely handle. More expensive tyres can bear the H rating. The speed rating numbering system run from A1 to A8 in sequence, whilst the letters run from B to Y. But the chart is not completely in alphabetical order. Z Speed Rating: Max speed limit beyond 240 mph. A T is rated for 118-mph max and 109-mph sustained driving for 5 hours. What do 93t, 93s, 93q, 93h, 93r, 93v, 93w mean on a tire? In a nutshell, these codes represent the load index and speed rating of a tire. W 168. The most common speed ratings are: • Q - up to 99 mph. tire, we sell these often. Tire speed rating chart. Some tires have speed ratings of W, 168 mph and Y, 186 mph. Y - Up to 300 km/h. P 93 MPH. 0 4. , in excess of 149 mph. For tires having a maximum speed capacity above 300 km/h. Depending upon the different width, height, diameter and load, tyres are provided with relative speed ratings. These speed ratings provide a more precise indicator of a high performance tire’s speed over 149MPH. Speed rating on the tire displays the top-speed of the vehicle at which a tire safely functions, beyond this, it is not safe to use the tire, and it may burst. The V and Z are similar to an H rating. Older bikes, manufactured before the use of speed ratings became widespread, will not have a rating listed in their manuals or literature. For example, in the size code “205/55R16 91V,” the “V” represents the speed rating. The speed rating is represented by a letter – A being the lowest and Y being. It was soon discovered that there was a need for greater speeds, so W and Y were introduced. When a tire is stamped “205/65R15/94V,” it has a speed rating of V. You are allowed to use tires with a higher speed rating than designated, but not the reverse. S 180km/h Family Sedans & Van Tyres. H-rated tires are known for their pleasant rides, while V-rated tires are recognized for their superior handling. Sports Cars, Exotic Cars. M = 81mph/130kmh. The V category changed to 149 mph and the Z speed rating was introduced to cover speeds over 149 mph. W — Up to. The speed rating of a tire is usually molded into the sidewall of a tire along with the tire size designation. Some tires have speed ratings of W, 168 mph and Y, 186 mph. Most passenger car tires have a speed rating of H, which means they can be driven up to 130 mph. 0 2. 1947–1967. 0 1. They include H, V, and W speed ratings. V or W Speed Rating: 6 years and 65,000 miles treadwear warranty. It is good to know that this Cooper tire comes in various sizes from 15 to 19 inches, with speed ratings of V, W, and H. This is a standing policy in most shops, including Costco. With several ratings available, ‘H’ and ‘V’ are among the most common ones you might encounter. Like load ratings, speed ratings are regulated by law. ** Per the TR&A 2007 yearbook, for tires having a maximum speed capability above 240 km/h (149 mph), a ZR may appear in the size designation. The code ’95W’ holds the key to understanding the tire’s load index and speed rating. However, the numbers differ, representing the load index. For S-speed-rated tires, it's 112 mph; for T, 118 mph. In other words, it’s the fastest speed a tire can handle before it does not perform as designed. Another thing you must always remember is the fact that it’s never safe to exceed the limit identified by the speed. For instance, a 2022 Chevrolet Trailblazer LS comes with 225/60R-17 99H tires. This means to say that such a tire is designed to carry a maximum load of 1,521lbs and run at a maximum speed of 130mph. V and W are two typical tire speed classifications. W= 270 km/h Y= 300 km/h llantas ZR, llantas W, indice de velocidad de las llantas, kuhmo ecsta, dunlop direzza, bridgestone potenza, sumitomo, llantas maxxis, llantas slickM: Up to 81 mph (130 km/h) – Suitable for temporary spare tires or winter tires. C: 60 kph 37 mph. That particular character corresponds to a maximum speed of 130. The speed rating system was developed to control the safe speeds at which tires must still perform as per the. * W- and Y-speed ratings are subcategories of the Z-speed rating. Nowadays, it means 149 mph but no higher. If you will never exceed or even approach the speed rating of 130 mph, the difference in speed rating between the H and the V rated tire is likely not relevant to. H is 140 miles per hour. 97t vs 97h. ZR Designation. Wheels with an H-rating can withstand speeds of up to 130 mph, making them suitable for a sports sedan coupe. Q-160km/h; R-170km/h; S-180km/h; T-190 km/h; U-200 km/h; H-210 km/h; V-240 km/h; W-270 km/h; Y-300 km/h; ZR-Capability beyond 300 km/h; Winter Tires Speed Rating. Also, the speed rating references the testing and does not. Each letter coincides to the maximum speed a tire can sustain under its recommended load capacity. V 240km/h or 149mph. P 150km/h Winter 4×4 Tyres. P — Up to 93 mph. The LOAD INDEX is a numerical code associated with the maximum load a tyre can carry (except for loads at speeds above 130 mph (210 km/h) – see Table 2/2a) at the speed indicated by its Speed Symbol under service conditions specified by Avon Tyres. • H - up to 130 mph. 110H: The “H” speed rating permits speeds up to 210 km/h or 130 mph. It means that your tire can safely handle speeds up to 270 km/h (168 mph). N 140km/h Spare Tyre. Q — Up to 99 mph. 130 mph & 210 km/h. A more recent development is a tire with a (Y) rating, which is given to a tire that can withstand high speeds past the 186-mph mark. Despite being substantially further in alphabetical order, T-rated tires have a lower speed rating than H-rated tires. . For example, H is between U and V, with the common perception that H stood for “high performance” at one time. But let’s keep those wild speed fantasies in check! These numbers are for your tire’s safety and longevity. The “V” speed rating is among the highest speed ratings a tire can get and indicates a maximum speed of 149 mph (240 kph). Learn how these codes help you make an informed decision about. The “T” is the Speed Rating, signifying the tire can safely reach speeds up to 118 mph (190 km/h). A 'T' speed rating for a Buick everyday driver that's not going to be driven like mad will be just fine. While a Z-speed rating still often appears in the tire size designation of these tires, such as 225/50ZR16 91W, the Z in the size signifies a maximum speed capability in excess of 149 mph, 240 km/h; the W in the service description indicates the tire's 168 mph. While both have the same load index of ’82’, meaning they can carry up to 475 kg (1047 lbs), the speed rating is different. Speed Rating H. W and Y-speed tires were innovated later as cars got faster with the help of technology. See moreSep 25, 2020Tire speed ratings, represented by letters like H and V, indicate a tire’s maximum safe operating speed. Typically, the Z, W and Y ratings appear on summer tires or competition. Because manufacturers add speed to their vehicles, tire speed ratings continue to evolve to match the speeds. This tire can support 1,477 lbs. A relatively new addition to the speed rating chart, tires with speed rating “W” can achieve a maximum sustained speed of 168 mph (270 kph). : Up to 87 mph (140 km/h) : Up to 93 mph (150 km/h) : Up to 99. If the tire set shows varying wear, you can get a replacement or a refund. 130 mph & 210 km/h. And if the vehicle with V tyres goes faster than 240 kilometres per hour, the tyres would blow out. In the instance of the tyre size shown above, the speed rating would be " V " - this allows a maximum speed of 149mph. The load index is a numeric value representing the maximum weight the tire can support. The Load Index (105 in this case) indicates the maximum load that the tire can safely carry, while the letter following it (like T, S, Q, H, R, V, W) is the Speed Rating, which signifies the maximum speed at which the tire can safely travel. Let’s break these ratings down in an easy-to-reference table:. A Z speed rating still appears on some tires sizes (ex: 225/50ZR16 91W). The W rating replaced what was once Z, which was anything above 149 at the time, and is now limited to 168 mph. If a tire reads “225/65R17/102H” it has a speed rating of H. In summary, H and T markings on tires refer to the maximum speeds they can support – given payload capacity, recommended tire pressure, and ideal road conditions are met. H - Up to 210 km/h. ago. So which tyre speed rating do I need? Most standard consumer vehicles fall under the speed rating of S or T (for 112 or 118 mph limits). This wouldn't be wise from either an insurance or safety point of view. This makes them ideal for sports cars, luxury vehicles, and. 300. Each letter denotes the maximum speed a tire can sustain under its recommended load capacity. For example, H falls between U and V, with the common perception that H stood for "high performance" at one time. Here is a key to the information on a tire branded P205/65R15 92H: Letter P: indicates the tire is designed for use on a passenger car. 6 inches tall, and fits a 17-inch wheel. Number built. Instead of a number, they use a letter which corresponds to a maximum speed on the table below. Hankook offers sizes ranging from 16-20 inches, and all sizes carry a H, V or W-speed rating. If the letter here is Z, indicating a maximum speed in excess of 240 km/h (149 mph), then a more specific letter W or Y may appear after the load index (see speed rating, below). W Speed Rating: Max speed limit of 270 mph. A tire’s certified speed rating is given a letter from A to Z, ranging from 5km/h. While both share the same load index ’87’, ‘h’ denotes a speed rating up to 210 Km/h, whereas ‘v’ boasts a speed rating up to 240 Km/h. Note that metric sizing uses both millimeters and inches, and requires conversions. A: In addition to H and V, there are various other speed rating categories such as T, S, W, and Y. That particular character corresponds to a maximum speed of 130. It is important to buy tire replacements with the. g. These tires are typically labeled as “performance tires”, and they are meant to provide superior handling and wet-weather traction due to the higher speed ratings (H=130 mph, V=149 mph). Identify the speed rating symbol: The speed rating symbol is a letter that indicates the maximum speed at. W (ZR) 270km/h or 168mph. If the mph speeds assigned to each speed rating. e. T 190km/h Family Sedans & Van Tyres. The current standard for tire size and information looks like P215/60R15 89H, where the 89 is the tire load capacity and the H indicates the speed rating. This six-year warranty entails a 70,000 miles warranty for the H and T speed rating and 65,000 miles for the V speed rating. These alphanumeric codes represent the Load Index and Speed Rating of the tire. In our example, “H” is equivalent to a maximum speed of 209 kph (130 mph). For instance, S is equivalent to a maximum speed of 112 mph. Here, the tire speed rating is V. The “T” is the speed rating, signifying that this tire can safely operate up to a maximum speed of 190 km/h. For example, 205/55 R16 91W denotes a "W" speed rating, which means the tyre can handle speeds of up to 168mph (assuming it is not overloaded). These letters are arranged in increasing order of capability, with S being the lowest and Z being the highest. For speeds over 160km/h (100 mph), load and inflation must be adjusted according to the table below. H Speed Rating: Max speed limit of 210 mph. ZR Above 240 km/h. Now, let’s talk about the two selected speed ratings, “T” and “H. For this reason, the wheel rim size (R) is also multiplied by 25. Q 160km/h Winter Tyres. However, it is important to keep in mind that your tyre rating does not necessarily indicate the top speed that your vehicle is. V Speed Rating. For tires having a maximum speed capacity above 300 km/h (186 mph), a ZR must appear in the size designation. To further add to (and possibly confuse) the code of reading tires, there are also speed ratings denoted by letters. It’s represented by a letter. Secondly, it offers a wide range of features that are comparable to high-end, paid. Prior to 1991, the most popular speed ratings were “S,” “H” and “V. In this article, we’ll provide an overview of speed ratings, delve into the characteristics of H. Q — Up to 99 mph. In the tire speed rating system, the letter code corresponds to the maximum speed at which the tire can safely operate for an extended period. To receive its rating it must demonstrate that it can sustain a particular speed when tested with simulated loads. The speed symbol of H is given after the load index. H is the speed rating. 28:1 final drives apply almost exclusively to UK-Spec 20,000-series Turbo Rs with the 3L80 transmission. 2019 Porsche Macan. As such, in this “V vs W Speed Rating” article, we will compare these two ratings and tell you the ins and outs of both. A V rating represents 149 mph but no faster. R — Up to 106 mph. As manufacturers continue to add speed to their vehicles, tire speed ratings evolve to match the speeds. H-Rated Tire: It is rated for up to 130 mph. P — Up to 93 mph. I am probably going to buy a set of Michelin Pilot Aplin 4s and I have 2 choices available: one with the "V" speed rating (max 240 km/h / 149 mp/h) or "W" speed rating variant (max 270 km/h / 168 mp/h). S meant "speed", H "high speed", and V "very high speed". Q — Up to 99 mph. 00, 2. 300. Q: The max speed for this type of tire is about 99 MPH. Each type of tire is suitable for specific vehicle types and uses. The lowest ratings are. This tire certainly packs a punch, but remember, high speeds are for racetracks, not roads. W 168. There are a bunch of different speed ratings, but we’ll focus on the ones you’ll most likely come across when shopping for tires for your car or truck: H-rated and V-rated tires. Step on the tire to press the tire onto the rim. W (ZR) 270 km/h. H. Re: W and Y rated tyres. U 200 km/h. A relatively new addition to the table, aWa speed-rated tires can achieve a sustained top speed of 168 mph (270 km/h). H is the speed rating. Primacy™ Tour A/S H,V All-Season 55k Primacy™ Tour A/S W All-Season 45k Primacy™ Tour A/S ZP V All-Season 30k Pilot® MXM4 ®H,V All-Season 50k Pilot® MXM4 ®W All-Season 40k Primacy™ 3 H,V Summer 45k Primacy™ 3 W,Y Summer 35k Primacy™ 3 ZP H,V,W,Y Summer 30k Primacy™ 4 V Summer 45k Primacy™ 4 W,Y Summer 35k. Here’s a quick guide to understanding them: “H” – Up to 130 mph (210 km/h) “V” – Up to 149 mph (240 km/h) “W” – Up to 168 mph (270 km/h) “Y” – Up to 186 mph (300. The code consists of a series of letters and numbers. Therefore, W-rated tires have a higher top speed rating than V-rated tires. 149 mph is the maximum speed at which a tire with a V speed rating is safe to drive. Speed ratings are arranged in alphabetical order and each letter relates to a safe maximum speed. But in terms of speed, the 105W tire, with a speed rating of 270 km/h, leaves the 105H tire, with its 210 km/h speed rating, in the dust. If you recall from earlier, the “H” speed rating doesn’t appear after “G” but between “U” and “V. T 190km/h Family Sedans & Van Tyres. 44 m) stainless propellers. – Speed Rating W. W. The tyre load index and speed rating make up the tyre service description which is a standardized number located next to the size on the sidewall of the tyre. Currently, there are more than a dozen speed ratings for tires offered in the United States. Facebook. and the highest rating currently (Y)= above 186. Z is over 149 miles per hour. Remember, driving within safe speed limits ensures optimal tire performance and longevity. The “101T” tire code indicates a load index of 101, which means that each tire can support up to 825 kilograms. ), or OE markings (designating that a version was specifically designed for a vehicle. Speed rating ≠ top speed. The H speed rating means that the tire is rated for a 130-mph top speed limit (210 km/h), while the T speed rating indicates a maximum speed limitation of 118 mph (190 km/h). In this article, we’ll dive deep into the nuances of tire speed ratings, particularly H vs. H is the speed rating. Aside from being illegal, it can cause poor handling and unpredictable steering of your vehicle. Can V-Rated Tires Go Faster than H-Rated Tires? V 149. G: 90 kph 56 mph. Exceeding any of these can cause the tire to wear faster or even tear. It is higher than the S Speed Rating, which is common on standard family cars, but lower than the H, V, and W Speed Ratings found on sportier and high-performance vehicles. The following letter – W – is the tyre's speed rating. Those are strong tread warranties indeed, but the CS5 Grand Touring, with its slightly lesser performance orientation, boosts that treadwear protection up to 80,000 miles. W. 581 posts · Joined 2015. Remember, the T Speed Rating has a maximum speed limit of 118 mph (190 km/h). Additionally, they also rate many tire lines at least H (up to 130 mph). H-rated tires are typically found on sportier vehicles, whereas a T-rated tire is more likely to be on family sedans and minivans. H rated tires are legal for driving at speeds up to 130 MPH, while V and Q rated tires are only legal for driving at speeds up to 99 MPH. Speed ratings for other tires include Q, 99 mph; H, 130 mph; and V , 149 mph. The speed rating of your vehicle’s tyres can be found on the sidewall of the tyre. For S-speed-rated tires, it's 112 mph; for T, 118 mph. Dimples on the tread act to distribute heat evenly across the tire to prevent abnormal wear, which in turn, extends strength and the life of the tire. E. So why is it important to choose a tire with the correct speed rating? If you drive too fast on a tire with a lower.