Contour Enthusiasts Group Archives Forums Modifications Wheels & Tires hmmm..

Originally posted by 1314:

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I did. When I was trying to decide between a 225/45 or a 235/40, I wanted to be as close to stock in diameter as possible. That calculator showed that the stock diameter of a 215/50 16 is 24.46. The 225/45 is 24.97 and the 235/40 is 24.40. The 235's were closest and that's what I went with and haven't had a single problem.

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That is exactly how it should be used/done...

Originally posted by Troll Pete:

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Informative and that's it. No chance I would actually use that to determine what size tire to put on.

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your a bone head troll