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RE71R 18" rear tire size for Cayman

PostPosted: Wed Mar 15, 2017 10:11 pm
by terryb
I'd like to put RE71Rs on my 2010 Cayman S. The 18" wheels currently have 235/40 and 265/40 which are the stock, factory sizes. The RE71Rs come in the front size but no 265/40, only 265/35 or 265/45. I'm leaning toward the 265/35s. I know these will throw off the speedometer a bit. Anything else I should take into consideration? Will the nannies or PDK get confused by the unexpected rotational speed?

Thanks,
-Terry

Re: RE71R 18" rear tire size for Cayman

PostPosted: Thu Mar 16, 2017 6:54 am
by ttweed
If you've got 20 points to spare, or don't care about your classing, I'd run the 255/35-18 on the front and 275/35-18 on the rear, Terry. That worked really well on my Cayman S when I had it.

YMMV,
TT

Re: RE71R 18" rear tire size for Cayman

PostPosted: Thu Mar 16, 2017 7:32 am
by john kinkaid
HI Terry,

Last year I ran the 245/40-18 and 275/35-18 combo without any issues. Glad to see the Cayman on track, save that nice Carrera!

John

Re: RE71R 18" rear tire size for Cayman

PostPosted: Thu Mar 16, 2017 10:08 pm
by terryb
Thanks for the replies Tom and John. I don't want to go crazy on points and since it doesn't sound like going from 40% to 35% tire height on just the rears will cause any nanny problems, II think I'll stick with stock widths at first and learn to drive the car.

Thanks,
-Terry

Re: RE71R 18" rear tire size for Cayman

PostPosted: Wed Mar 22, 2017 3:17 pm
by terryb
So where did you guys get your RE71Rs mounted? I asked my Discount Tire and they won't put a 275/35/18 on the rear because the stock load rating is 101 and this tire is only 95.

Re: RE71R 18" rear tire size for Cayman

PostPosted: Thu Mar 23, 2017 5:40 am
by john kinkaid
Hi Terry,

I do all my tire shopping at Tire Dynamics, 4585 30th St, San Diego, CA 92116 Phone: (619) 280-9500. Ask for Ray, he can normally get any tire within a few dollars of Tire Rack pricing.

John

Re: RE71R 18" rear tire size for Cayman

PostPosted: Thu Mar 23, 2017 11:05 am
by ChuckS
Terry,
A lot of us get our tires mounted at:

Bear's Tires
7023 Carroll Rd - Unit A
San Diego, CA 92121
858-453-2999

They are not too far from Mirage International
They don't care if you bought them there or not. A lot of PCA, POC, SCCA and NASA drivers go there.

Chuck

Re: RE71R 18" rear tire size for Cayman

PostPosted: Thu Mar 23, 2017 11:37 am
by terryb
Thank you John and Chuck. I've been to Bear's once to mount 225s on the 911's 9" wheels, which Discount wouldn't do. They were quick and pleasant but a little far from me in Oceanside. Know of a Bear's equivalent in North County?