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Old 10-13-2014, 11:01 PM   #2
Track rat
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Join Date: Nov 2006
Location: Cucamonga CA
Posts: 3,687
stock 16s are 6" front, 7" rear. I think shoehorning a set of 245s onto 7" wheels might be counter-productive but worth a try. An 8x16x4 would be ideal.
2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor
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