18" O.Z. Wheels
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From: Solana Beach, CA
18" O.Z. Wheels
Re. the 2015 Cayman GTS: Tires for the 20" wheels are somewhat limited in size. I was looking at the offerings from O.Z. on Tire Rack and spotted these:
Front:
I'd love to run a 245 fronts and a 285 rear, even better a 295 rear on 18" wheels, can this be done?
To any that respond, thanks in advance.
Front:
- 18" X 8"
- 18 X 8 1/2" (Love this combo)
- 18" X 9"
- 18" X 10" (Love this combo)
I'd love to run a 245 fronts and a 285 rear, even better a 295 rear on 18" wheels, can this be done?
To any that respond, thanks in advance.
Last edited by Martin S.; Nov 10, 2019 at 11:33 AM.
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Hey Martin, you'll like the 245/275-40-18 setup with the NT01's....I also ran 245-35-18 and 295-30-18 R7 on the 987.2 (similar clearances) with the OZ 8.5/10's with plenty of clearance.
The main thing is you want the rears to be about 0.5-1" larger in diameter than the fronts to get the PSM/ABS to play well together (close to stock ratio)
The main thing is you want the rears to be about 0.5-1" larger in diameter than the fronts to get the PSM/ABS to play well together (close to stock ratio)
Thread Starter
Rennlist Member
Joined: May 2001
Posts: 9,662
Likes: 557
From: Solana Beach, CA
Hey Martin, you'll like the 245/275-40-18 setup with the NT01's....I also ran 245-35-18 and 295-30-18 R7 on the 987.2 (similar clearances) with the OZ 8.5/10's with plenty of clearance.
The main thing is you want the rears to be about 0.5-1" larger in diameter than the fronts to get the PSM/ABS to play well together (close to stock ratio)
The main thing is you want the rears to be about 0.5-1" larger in diameter than the fronts to get the PSM/ABS to play well together (close to stock ratio)
245/35/18 Overall dia. 24.4 inches
295/30/18 Overall dia. 25.3 Inches
The above overall dia meets the .5 to 1" delta criterion.
245 and 295 have been good to me in the past. Thanks so much for your speedy response. Wish me luck that my prospective Cayman GTS passes its physical (PPI) on 11/4.
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From: MA
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From: MA
How wide of tires can be fit on a 981?
Is it a no brainer to go for a 9" front wheel over a 8.5" front wheel given proper offsets? Apex and Titan7 offer 9" fronts while the OZs are 8.5". This assumes an appropriate amount of front neg camber for track use. At least -2.0.
Is it a no brainer to go for a 9" front wheel over a 8.5" front wheel given proper offsets? Apex and Titan7 offer 9" fronts while the OZs are 8.5". This assumes an appropriate amount of front neg camber for track use. At least -2.0.
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Last edited by duffin; Nov 17, 2019 at 06:19 PM.