Thread: R&P options?
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Bill Verburg Bill Verburg is offline
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Join Date: Dec 2000
Posts: 23,765
When you say short, 7:31? or 8:31 w/ short gears?

As always gearing is dependant on purpose and usage. Mine is geared(from memory which ain't so good these days) for 180 or so and gives a relatively relaxed rpm range at 60-90mph, but that's its main usage and it has unbelieveable torque.

The 964 enginew/ the same gearing was also nice and relaxed at a that speed level, but I felt that it was somewhat over geared(too low numerically) most of the time, not torqy enough to compensate. But ok for the track use because lower 3rd & 4th gears were used.

The 964 w/ 245/45x16 and stock C3 trans was about perfect for that engine.

So i'm guessing that you would likely not want to go any taller than a 255/40x17 @ ~25.1" tall if the 915/67 gears are used.

As a sidebar, There is a very interesting Michelin Pilot Sport tire(not Sport Cup) that is supposed to be available shortly, 265/35x17 @ ~24.3" tall which would suit your application very nicely. There is also a matching 235/40x17 @~24.4" tall

Thanks, its nice to hear that somebody appreciates the effort, too many folks don't even bother to reply w/ a thanks.

My gearing, I use a ~25.7" rear tire
Bill Verburg
'76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone)
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