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Tire Size Calibration Importance?

2K views 2 replies 3 participants last post by  CdnoilRAM 
#1 ·
Is there any benefit to having the correct tire size calibrated to the truck from a performance standpoint?

I understand that it makes the speedometer accurate, but does it affect anything else?

Having it say 10% out (Where the speedo reads 90k/hr when you're really traveling 100k/hr cuts the odometer down the same 10%....

Its easy enough to compensate for when reading the speedo, and keeps recorded miles on the odometer lower....any other factors to consider?
 
#2 ·
Some will argue that it will affect the transmission shift points however after a bit of time the transmission is going to relearn the shift points based on the changed tire size anyway. Realistically, on a Cummins especially, the transmission doesn't care about the changed tire size. I don't think it affects the tuning at all.

The speedo and odometer/trip meters are the only real things to worry about.
 
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