986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - 986 Boxster ChampCar Endurance racing build

steved0x · 02-03-2022, 10:56 AM

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!

02-03-2022, 10:56 AM	#2
steved0x Registered User Join Date: Dec 2012 Location: FL Posts: 4,143	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!