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David David is offline
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Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 8,478
Garage
I forget what my back spacing is, but I posted it so some searching should turn it up.

I agree that the 18's should work fine. The 930 has really beefy bearings and the 18's aren't any heavier than the 17's.
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2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
Old 02-14-2008, 12:47 AM
  Pelican Parts Technical Article Directory    Reply With Quote #8 (permalink)