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Pastimes : Where the GIT's are going

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To: KLP who wrote (165233)7/23/2008 12:28:43 PM
From: TimF  Read Replies (1) of 225578
 
Generally larger tires are used on performance vehicles, and larger tires are used on large vehicles.

Larger rims and tires are becoming more common. Partially because (at least until the recent rise in gasoline prices) cars have been getting bigger and also to an extent focusing more on performance.

For large vehicles (say SUVs) your just scaling up with the vehicle. But these tires aren't likely low profile (see below) or to have the tread design and rubber compound set up to maximize dry performance. There just bigger normal tires.

Then some people just think large rims look cool. In extremes you get people who spend a lot of money on overall large rims, which probably aren't justified in performance terms. Then some people add lights or spinners or other things to the rims, purely for looks. That's not my thing, but if it makes them happy...

For performance cars, you have larger rims with low profile tires (the height of the tire's sidewall is low) result in stiffer tires which helps handling. You also often have a softer rubber compound which will "stick" more and help handling (although it will cause the tire to wear quicker), and tires set up like this will be wider for a given overall tire height, which despite popular belief doesn't increase the amount of rubber on the road (the contact patch is determined by the pressure in the tire and the weight of the vehicle, the shape of the tire doesn't change it much if at all), but it makes for a wider contact patch which is slightly better for cornering.

Are Wider Tires Better?
mazda6tech.com

Plus sizing
en.wikipedia.org

Tire Sizing
apa.ca
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