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Track day wheels/tyres


shark_90
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I've posted this elsewhere too, I just thought I'd ask the collective over here.

I've always been under the impression that smaller wheels are better than bigger wheels for handling. The reason I ask is that I've got two sets of wheels (16" and 17") and I don't know which ones I should use on the track.

Can anyone give me any pointers and reasons why?

Cheers beerchug.gif

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That depends on whether or not the outer rolling radius is different.

If both your rims are 16 or 17 inches and the rolling radius is the same, the lower profile tyres will behave better in the corners as there will be less lateral leverage forces trying to distort the tyre.

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I'm surprised no ones mentioned weight!

The reason smaller wheels are often used (such as F1!) is because air is lighter than alloy wink.gif

On my TT I had 17" and 18" wheels. The 17's were the originals and the car handled better with the smaller lighter wheels.

You can't just say bigger is better because of the stiffer and smaller side wall as in many cases the increase in unsprung weight actually makes it worse. Of course if also depends on how your suspension is set up. Don't think that the off KG or 1" of side wall doesn't make much difference as it does.

You need to weigh up all the factors before deciding ... including smaller tyres are often cheaper wink.gif

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