Thread: Questions about standard 18" Cayman S Wheels (Moving from 19" Carrera S wheels)
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Old 07-13-2008, 11:37 PM
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Quote:
Originally Posted by pfazzone View Post
Hi folks,

Couple of quick questions for those wheel experts out there. I have the opportunity to buy a set of 18" Cayman S standard wheels (take-offs) for a decent price to use as track wheels. I did a whole bunch of searching, but am coming up dry. Here are my questions:

1. Is there any way to tell if the wheels really are take offs (OEMs and not knock-offs)? I have high res photos of all 4 (inside and out) and I compared them to some of the photos posted in the wheel wax article, but is there any way to be sure?
OEM wheels are usually made for Porsche in Germany by either BBS or Rial... look for the name of the manufacturer - it should be stamped on (or molded into) the wheel, usually on the back of one of the spokes. My 19" sport designs for instance, are made by Rial. Most "replicas" are made in Italy.

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2. Is there any way to visually inspect the wheel to confirm if it has TPMS or not? Is the stem different on wheels without it?
The TPMS stems are metal and sort of short and stubby - non-TPMS usually have rubber stems

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3. The wheels come with PS2's installed. I want to ensure they are not patched/plugged so that I can use them on the track. I plan to take them to my local shop, which also happens to be an installed for Tire Rack, to have them taken apart, inspected, remounted and balanced before I track them. Will this be sufficient to ensure the wheels are true?
Make sure they have a good "road-force" balancing system (usually a Hunter 9500). Have them put just the wheels on the machine first to test the wheels for being true. With good road-force balancing you should be fine.

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4. Can I switch between 19" Carrera S wheels and 18" Cayman S wheels with the same length wheel lugs or are they different and would they require spacers?
They should be interchangeable with he same bolts.

brad
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