Fitting right size tires
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Teching In
Joined: Sep 2014
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Fitting right size tires I have a 98 Trans Am and It's needing new back tires. I have 17x9.5 z06 wheels all around it right now with 275/40/17 tires on. I'm wanting to get 305/40 in the back but can't seem to find any and I don't think 315/40 would fit. Does anybody know of any brands who makes that size tire?(305/40/17) If not what's the biggest tire I can fit on and what brands. Thanks!
They don't make that size... you're looking for a 315/35-17. It's the same height as the 275/40-17. That second number is aspect ratio; so it's a percentage of the width. Which is why a 315/35 = 270/40 in height.
