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18" wheels vs. tire size

halsyknox
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halsyknox Member

halsyknox

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I have a 2006 C2 with stock 18" X 10" wheels and 265/40 tires on the rear. I cannot find that size in the tire I want to buy. Tirerack.com recommends a 295/35 instead. Does anyone run a 295 wide tire on 10" wheel's? I've used online calculators and they say 295 tires can go on 10" rims and the diameter difference would only be 0.84% from stock. Just wondering if they can be put on and if they are safe and if they drive alright. Thanks.

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rob545 Member

rob545

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You should be just fine with the 295 width tire on the 18". Tire manufacturers offer and "approved rim width range" for the tires they offer. This can be found in Tire rack's Specs tab. You will find that all Porsche approved tires in that width are listing a range of 10-11.5" rims. THis means it is safe to fit on all those rim widths. On on end of the spectrum (10") the tire will be slightly more "pinched" than on the opposite end where it will sit more stretched on the rim. Either way, it is perfectly safe to run, and you should have no clearane issues whatsoever. Hope this helps,

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halsyknox Member

halsyknox

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Well, I went ahead and ordered 295/35 for the rears. I asked the shop where they will be put on the rims and they said they shouldn't have a problem putting that fat a tire on 10" rims. Everything online says it's OK. I'll try and remember to report back once I get some miles on the new tires

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Rapewta Member

Rapewta

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Go to www.ejelta.com

The site is a tire size calculater.

295's fit a 12" rim the best in my opinion.

265's fit a 10" rim the best in my opinion.

Edited by Rapewta
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