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Found 2 results

  1. Hello, I just returned to State side after ten years of living overseas. To jump into the winter here is Colorado, I need to get winter tires on my 1999 996 C4. Service manual shows the following as a starting point. My C4 has 225/40 R 18 for fronts and possibly 7.5J x 18 - 50 for wheel. Similarly 265/35 R 18 for rear and possibly 10 J x18 65 wheel. However, winter tire conversion may not be so easy. It seems to require 17 inch wheels: 205/50 R 17 89T M+S - 7Jxł7 - 55 for front. 225/45 R 17 90T M + S - 8.5J x 17 - 50. I haven't done anythig to brake caliper hoping that there wont be intrference with smaller radius. Any input or even insight into this is appreciated.
  2. Hey guys hoping somebody on here can fill me in on capabilities of the dealer software: Can you adjust the wheel size/speedometer pulse count in the computer? I have owners manual sized tires and the speedometer is WAY off, to the tune of 5mph fast. The speed doesn'tbother me so much as the odometer being way out of proportion to actual miles driven. I am also considering going away form the stock size tires so this would be extremely helpful for that. thanks!
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