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tire conversion chart

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Old March 31st, 2011 | 02:59 PM
  #1  
montvaleplace's Avatar
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tire conversion chart

Do any of you guys know if there is a chart on this site showing the old lettered sizes verses the newer metric sizes? I'm trying to figure out which speedo gear is correct for a car with 2.56:1 gearing, a 350 tranny, and 275/60/15 tires. The output shaft has a green gear 8 tooth I believe and the driven gear is a brown 39 tooth. When the car is traveling at 60mph as proven with an accompanying car with a digital dash the speedo only reads about 55 mph. Sorry for the long winded story here, sometimes I ramble.
Old March 31st, 2011 | 05:17 PM
  #2  
Bluevista's Avatar
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From: Northeast Ohio
Tire Rack is on this site?
They have a tech section with that stuff.

http://www.tirerack.com/about/techcenter.jsp
Old March 31st, 2011 | 05:59 PM
  #3  
montvaleplace's Avatar
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Got It, thanks! Hey check out mt newest addition...
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Old March 31st, 2011 | 06:54 PM
  #4  
MDchanic's Avatar
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From: The Hudson Valley
Here's the TireRack chart that I find most useful.

Download it. Save it. Live it.

- Eric
Old March 31st, 2011 | 07:57 PM
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From: Nelson BC Canada
Nice addition
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