Why don't certain high quality snow tires come in higher speed ratings?

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  • Why don't certain high quality snow tires come in higher speed ratings?


Answer #1 | 19/12 2013 11:25
I don't know for sure, but what I do know is that every car comes with a speed limiter. The engine gets to a certain point where it will not let you go any faster because your wheels would heat up and just disintegrate. If your original tires are rated at H, that means your engine may think that you have better tires than you really do, and it could let itself go faster than what R rated tires allow. Like I said though, I wouldn't know for sure, but that is how your car is set up. I would just go ask a tire guy at the store and see what he says. Best of luck
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Answer #2 | 19/12 2013 11:27
High speed creates friction. Friction creates heat. Winter tires are designed to operate at cold temperatures for rather obvious reasons, thus they have less resistance to heat than tires designed to operate in warm temperatures. It is perfectly acceptable to install winter tires with a lower speed rating than your summer tires. That is the norm and is expected.
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Answer #3 | 19/12 2013 11:50
Mark F hit the nail on the head. Winter tires are simply designed and engineered to be used in colder temperatures where less friction, and thus heater, is generated by the tire. You are perfectly fine to use a R speed rated tire in climates where the temperature will not exceed 45 degrees Fahrenheit.
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Answer #4 | 19/12 2013 13:15
It's designed for snow and ice, not speed. If it's a concern then you're likely to be wanting to test the outer limits of the stated speed rating letter designation. In winter no less.
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Answer #5 | 20/12 2013 07:33
You have misunderstood the concept. Getting a tire with a lower speed rating is absolutely fine. Most of us with special performance cars know that. My car is a 2001 Audi TT FWD 5 speed manual. The recommendation are for Z rated tires. Handling with other tires is the same. Z tires have softer compound and last only about 25,000 miles. Handling is designed into the car. No need to worry as the higher rated tires are for max performance such as high speed driving or racing.
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Answer #6 | 20/12 2013 01:19
driving 100 mph in snow is dangerous. that's what I can tell you! if you want to live don't drive fast in such conditions!
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