Quote:
Originally Posted by steved0x
275/40/17 is about about 25.66" diameter? I tried to run a 245/40/18 (25.72") in front with stock suspension and the tire was too tall and hit the OEM suspension lower spring perch in front. Unless that front wheel is pushed way out (and with a 17x10" it would be out there a ton!) that size may not fit up front. I have got a Maxxis RC-1 in that size I run on my Cayman in rear, I can try to put it up front on my Boxster and see if it clears that perch (unless you already tried it). It might be close!
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You are correct 275/40/17 is 25.66" Dia. which is 16 mm larger Dia (or 8 mm on the radius) than the 255/40/17 I test fit without issues.
The 17x10 wheels have the same offset as my test fit wheel to clear the lower control arm strut so all the extra width will go to poke (38 mm) which will require fender flares.
If you have the time and can check with your Cayman rears that would be great. Thx
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