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Drifting
Joined: Sep 2002
Posts: 1,614
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From: South Florida
Question about rear end gear change and speedometer
How does changing my rear end gear affect my speedometer reading?
How does changing my tire size affect my speedometer reading?
[Modified by SpyRacing, 4:20 PM 10/21/2002]
How does changing my tire size affect my speedometer reading?
[Modified by SpyRacing, 4:20 PM 10/21/2002]
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Re: Question about rear end gear change and speedometer (SpyRacing)
I'm not an expert but noticed no one answering your question.
Both will effect your speedometer reading.. I believe both can be corrected in programming in one of the computers.
I'm sure someone will provide more detail.
Both will effect your speedometer reading.. I believe both can be corrected in programming in one of the computers.
I'm sure someone will provide more detail.
Burning Brakes
Joined: Sep 2000
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From: Beebe AR
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Re: Question about rear end gear change and speedometer (SpyRacing)
Rear gear changes will have no effect at all -- I speak from experience. The feed is off the ring gear which is the same size on all C5. I have changed my rear gears and checked before and after using a GPS against the speedometer -- reads exactly the same. The only change you will see is the rpm levels different at the same speed before and after.
Since you have a six speed no re-programming is necessary at all -- just enjoy the improved SOTP performance. :D:D
A4s need reprogramming mainly due to shift points -- but not to correct the speedometer.
Tire size changes (larger or smaller diameter) will affect the speedometer.
[Modified by Mad_Dog, 3:13 PM 10/21/2002]
Since you have a six speed no re-programming is necessary at all -- just enjoy the improved SOTP performance. :D:D
A4s need reprogramming mainly due to shift points -- but not to correct the speedometer.
Tire size changes (larger or smaller diameter) will affect the speedometer.
[Modified by Mad_Dog, 3:13 PM 10/21/2002]
