JayG wrote:so in a 981, if for instance the GT4 has wider tires and wheels than say a base 981, you can use the GT4 wheels and tires as your basis for maximum width
jbrennen wrote:JayG wrote:so in a 981, if for instance the GT4 has wider tires and wheels than say a base 981, you can use the GT4 wheels and tires as your basis for maximum width
I'm not sure how this would actually be interpreted, but I would assume that at most, you could use the tire size for a different car of the same model as yours within the same SS class.
The GT4 is in SS08. The 981 S and GTS cars are in SS06. The base 981 is in SS04.
I'm sure that the tire size was at least part of the decision to put the GT4 in SS08. Letting SS06 or SS04 cars take advantage of SS08 tires just because the GT4 has the same "981" designation seems against the spirit of the rules.
rshon wrote:So this means that you can use 981 Cayman GT4 width wheels and tires on a base or S 981 Cayman or Boxster, but the reality is that those cars already were available with optional wheel/tire sizes that were close to, if not the same size as, those spec'ed on the GT4.
rshon wrote:Tom, your understanding is correct, but people also need to remember the 15mm track increase limitation as well. Essentially this limits the decrease in wheel offset to 7mm below stock (7mm sticking out further), so folks will need to worry about strut interference as well as being covered with fender lips with oversized tires.
All you would have to do is add "Except GT4" to the line of the Model Series that says "All 981".rshon wrote:We'll see how things go the first half of this year. If people are still unhappy, folks can always submit proposals to make the rules even more stringent for next year...
Greg Phillips wrote:Again, if you are buying tires and wheels to autocross or go to the track, you should be running in a CC class IMHO
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