Track Tire size questions for Cayman
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From: Columbus Ohio
Track Tire size questions for Cayman
I recently bought a 2010 Cayman for track duty and am trying to find a suitable 200 treat-wear tire that will fit on my 18 inch rims and not throw off the ABS or other issues.
The original size is front 235/40/18 rear 265/40/18; front diameter 25.4& rear 26.3 front rims 8" rear 9"
Looking to see if i can fit a set of RE-71RZ tires they have the fronts 235/40/18 but the closest rear diameter tire is a 275/35/18 tire that is smaller at at 25.6.
Wonder if anyone has ran that combo on a Cayman base without any ABS issues?
Thanks Frank.
The original size is front 235/40/18 rear 265/40/18; front diameter 25.4& rear 26.3 front rims 8" rear 9"
Looking to see if i can fit a set of RE-71RZ tires they have the fronts 235/40/18 but the closest rear diameter tire is a 275/35/18 tire that is smaller at at 25.6.
Wonder if anyone has ran that combo on a Cayman base without any ABS issues?
Thanks Frank.
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Joined: Dec 2002
Posts: 72
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From: East TN
I've been running 255/35 (25" dia) and 275/35 (25.6") on 18's for years, autox and track days on a 2011 S. Never a peep from the PSM or ABS. The extra front width also gives a little more bite. Mostly Bridgestones. I am running a 10" wheel in the back though.
Thread Starter
Rennlist Member
Joined: Nov 2007
Posts: 1,412
Likes: 3
From: Columbus Ohio
Advanced
Joined: Dec 2002
Posts: 72
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From: East TN
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From: Hood River, OR
Last edited by David Mackintosh; Apr 27, 2026 at 12:40 PM.
