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Old Sun, September 11th, 2011, 02:16 AM
ak_cowboy ak_cowboy is offline
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Join Date: Mar 2010
Location: Alaska
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Default Tire Size not Changing

I've upgraded my tires to 295/70R17s (33.4") and my speedo is reading 9% slow. This is GPS vs what the Gryphon says. I had the same problem when it was the stock edge, I can adjust all the other custom settings, but the speedo is always off no matter what numbers I put it. I've tried from 2500 to 2800 and its always reading slow. ex says I'm doing 55mph while gps shows 60mph...

Any idea how to fix this?