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Tire size and Computer

Old February 23rd, 2008, 5:53 PM
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Default Tire size and Computer

When going to a taller tire does it cause problems with the computer?
I know the speedo will be off but how about shift points or anything else?
If it does is there an easy fix?
This is for a 2006 3500 Express with 6L.

Thank You
Old February 23rd, 2008, 7:59 PM
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Default RE: Tire size and Computer

Yes when you put taller tires on when it the spedometer gets off so do the shiftpoints you can get about any performance programmer and they can adjust these things.
Old February 24th, 2008, 12:51 AM
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Default RE: Tire size and Computer

heres a programmer for your express: http://www.autoanything.com/performa...0A2647550.aspx
Old February 24th, 2008, 10:30 AM
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Default RE: Tire size and Computer

ORIGINAL: FLSTFI

When going to a taller tire does it cause problems with the computer?
I know the speedo will be off but how about shift points or anything else?
If it does is there an easy fix?
This is for a 2006 3500 Express with 6L.

Thank You
It has been my experience that the shift points still work fine because the shift points are based on the tail shaft rpm. You can further optimize the set up with a new program.
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