What Is a Tire Speed Rating?
A tire’s certified speed rating is given a letter from A to Z, ranging from 5km/h (3mph) to above km/h ( mph). This rating system (see below) shows the top speed for which a tire is certified. It does not indicate the total performance capability of a tire. An H speed rating indicates the tire is approved for speeds up to mph ( km/h) under optimal conditions. An H speed rating is at the low end, or at the start of the performance tire speed ratings. H speed rated tires are ideal for sport and luxury coupes and sedans, but not typically considered full-fledged performance vehicles.
Knowing if your car has TPMS will enable you tirew find the right tires. Not sure? Call 1 or Chat with Us. Enter your phone number to receive a text message with a link for this information. The number will not be used for any other purpose. Carrier charges may apply for receiving text messages. Tire speed ratings do not imply that the vehicle may safely be driven at the maximum speed for which the tire is capable, particularly under adverse weather or road conditions.
To view the tire size code for your current tires, just look at the sidewall. Does the speed rating on each tire match what the manufacturer recommends? It should! The rating will nearly always exceed maximum highway speed limits, tiees no tire or vehicle manufacturer advises how to get rid of a rash from shaving faster than the law allows.
Speed ratings are the product of laboratory testing — with simulated speeds and loads. Industry standards govern the process of reaching and maintaining a given speed during a test. Speed ratings how to enable auto reply in outlook 2007 not apply to tires that have been damaged, altered, under-inflated, overloaded or repaired.
Each letter corresponds to a specific speed. In general, that speed goes up as the rating advances alphabetically. This was for tires whose maximum sustained speed was mph kph or more. They begin with a maximum speed of mph kph and increase from there. Nowadays, it means mph how to use western union reward points no whqt. When it does, it represents either a maximum speed of more than mph kph or mph kph.
Which of those speeds it refers to will depend on the what does speed rating h on tires mean tire. Contact the manufacturer to get details on any Z-rated tires. Sports car owners are more likely to encounter this speed rating than owners of typical family sedans. Speed ratings are based on laboratory tests under specific, controlled conditions. While these tests relate to performance on the road under those conditions, remember that real-life driving is rarely identical to test conditions.
Learn about everything from proper tire care to the advantages of Bridgestone's breakthrough tire technology and everything in between. The TPMS warning light will help warn you when your tire pressure is too low and could create unsafe driving conditions. Do you know what to do next? Driving at night calls for clear and well maintained headlights for optimum visibility.
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Find Your Tire. What it Means and What you Need to do. What it Means and What you Need to do The TPMS warning light will help warn you when your tire pressure is too low and could create unsafe driving conditions. Learn More. How to Clean Foggy Headlights.
How to Clean Foggy Headlights Driving at night calls for clear and well maintained headlights for optimum visibility.
What does “speed rating” mean on tires?
Jan 21, · Definition of Tire Speed Ratings. A tire's speed rating is an indication, expressed as a letter code on the tire sidewall, of a speed the manufacturer expects the tire to be able to sustain over a long period of time without coming apart. This is good information to have for a number of reasons, some of which actually include the likelihood of you ever being able to sustain even the Estimated Reading Time: 3 mins. 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. Speed Rating V Once the highest speed rating a tire could have, “V” used to represent a maximum of mph ( kph) or more. Sep 25, · The speed rating on a tire indicates the fastest speed a tire can handle before it affects the tire’s performance. Lower speed ratings (such as A8 or B) will mean that you won’t have good control or handling of the car at highway speeds. Higher speed ratings, like H or ZR, can handle far beyond a normal highway speed.
Confused about what that letter means right after your tire size? Ever had someone at a tire shop ask what your speed rating was and didn't know what the person meant? Don't know whether you need the more expensive V- or ZR-rated tires that the car came with? Fear not, mighty consumer, for the information here will edify you.
A tire's speed rating is an indication, expressed as a letter code on the tire sidewall , of a speed the manufacturer expects the tire to be able to sustain over a long period of time without coming apart. This is good information to have for a number of reasons, some of which actually include the likelihood of you ever being able to sustain even the lowest of speeds that passenger car tires are rated for.
The speed rating code is semi-alphabetic and goes like this:. B: 50 kph 31 mph C: 60 kph 37 mph D: 65 kph 40 mph E: 70 kph 43 mph F: 80 kph 50 mph G: 90 kph 56 mph J: kph 62 mph K: kph 68 mph L: kph 75 mph M: kph 81 mph N: kph 87 mph P: kph 93 mph Q: kph 99 mph R: kph mph S: kph mph T: kph mph U: kph mph H: kph mph V: kph mph. There is probably some entirely rational reason for this which completely escapes everyone else in the entire world.
S, H, and V were the original three developed and is why H is out of alpha order. Obviously, most of these ratings are for tires that do not go on passenger cars. The lowest speed rating you will probably ever see on a passenger car or truck tire is either S or T, which appear most often on dedicated snow tires. You can see that there is quite a safety cushion built into the system—how long do you think you're going to sustain miles per hour on snow tires?
How many times do you think you might even reach miles per hour on snow tires? However, there is another use for this information—it gives you an idea of how well the tires are built for speed. In general, speed ratings of V or above mean that the tire has extra cap plies or even multiple steel belts to provide extra stability at very high speeds. It's built better to perform better. If you're looking for a tire to run on the Autobahn in your M3, you probably want something in the ZR range.
Likewise, if you're looking to put inexpensive shoes on a minivan, you probably don't need V-rated tires, even if they were the original equipment manufacturer OEM choice.
It's hard to understate the importance of knowing what the speed ratings really mean. If for example, the manufacturer did put V-rated tires on that minivan, it can be difficult to convince many tire places to put an H-rated on as a replacement.
This is less about selling more expensive tires, although that ends up being the functional consequence, and more about fears of liability. This, although good advice in general, has to be balanced against the car manufacturers' predilection for putting increasingly over-rated tires onto new cars.
This is something that you as a consumer should be aware of. Do you need the more expensive, better-built tire that will perform beautifully at 90 mph, or will you be better off with the cheaper one that works just fine at 65—75 mph but maybe doesn't do as well at 90— mph and might fail at mph?
That's ultimately a choice for you, not the tire seller. A caveat: The speed ratings are based on lab conditions and don't take into consideration an extra-heavy load in the vehicle or the heat and condition of the pavement. Maybe your tires aren't perfectly aligned or inflated, which will also affect their performance. The rating does not represent exactly the maximum speed that you can drive on them in real-world conditions.