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      10-14-2014, 05:10 PM   #54
Diver
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Drives: Black '12 135i - Sold
Join Date: Nov 2010
Location: Texas

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Quote:
Originally Posted by 02rsxpilot View Post
Diver, you are spot on that the best way to alleviate understeer on this car would be increasing front tire size and leaving the rear alone. The main reason you don't see that often here is in the extreme performance category there are little to no options with a 245 rear. Going square is an option, but at that point you are choosing handling balance over total grip, which in theory should make you slower, not faster (all things being equal).
Fortunately the Michelin PSS is available in 245/35-18. That may not be the ultimate, and as you say choices are sparse, but it is a good one and that is what I have with a 225/40 front. The swap improved the ride and reduced noise. The scary thing is if I trash one of those rear tires away from a big city it will take at least two days to get a new one.
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