Quote:
Originally Posted by CalBear_335i
What do you think about 255/35/18 on the 18x8.5 rim? I know that's oe size but I want to run them in the fronts.
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While it can be done, it is not recommended. Using the 255/35/18 tire on the 18x8.5" wheel is oversized, and due to the tires being ballooned with a narrower wheel, the tires effectively become ~250/35/18 since the tread is pulled in as the tire bead is pulled in. This happens when a tire is mounted on a wheel that is too narrow. Additionally, there would be less sidewall support from a wheel that is too narrow creating sloppier sidewalls, which in turn causes steering response to be less nimble and makes it more difficult to drive a tire at its limits. For street use this may not be an issue, but if one is looking for performance we do recommend the proper tire size and wheel width combination.