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Old 09-11-2007, 01:45 PM   #2
UncleBob
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Join Date: Feb 2006
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Re: Will MIL display when new tires are smaller?

The vehicle isn't aware of actual speed. All speed calculations are based off of tire rotation, and tire circumference won't effect that

What might happen though, (if you had a drastically different tire size) is the shift points could get confused/act odd, because the loads at speed are different that it was programmed for. You're talking such a small difference though, I doubt you'll notice any difference.

The speedo and trip/odometer will be off the same percent of course, unless you reprogram the computer for the new tire size
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