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BGTV8 · 08-06-2015, 05:58 PM

I can see from the IMSA specification document that the Doran Conti Challenge cars are running 275/35R18 tyres.

Can anyone confirm the wheel size and offset are used please

My Z34 build runs to slightly more relaxed regs, BUT I cannot flare the guards and I am interested in Conti-spec wheel size/offset and how much space might be available under front/rear guards.

I am intending to run a 280/655R18 Dunlop slick for dry and 265/650R18 for a wet.

The dry tyre really needs an 11" wheel but am dubious about fitting this under the front guard as I cannot flare the guard (I can roll the lip though). I could come back to 10.5 or even 10 a pinch but that is less than ideal.

RB

08-06-2015, 05:58 PM	#1 (permalink)
BGTV8 A True Z Fanatic Join Date: Dec 2009 Location: 03350 Australia Posts: 1,514 Drives: 09 Nissan 370Z M6 Rep Power: 39974	Conti Challenge Z34 Wheel sizes I can see from the IMSA specification document that the Doran Conti Challenge cars are running 275/35R18 tyres. Can anyone confirm the wheel size and offset are used please My Z34 build runs to slightly more relaxed regs, BUT I cannot flare the guards and I am interested in Conti-spec wheel size/offset and how much space might be available under front/rear guards. I am intending to run a 280/655R18 Dunlop slick for dry and 265/650R18 for a wet. The dry tyre really needs an 11" wheel but am dubious about fitting this under the front guard as I cannot flare the guard (I can roll the lip though). I could come back to 10.5 or even 10 a pinch but that is less than ideal. RB