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215/70/R16 ATs. Dealer says no speedo calibration?

10K views 15 replies 12 participants last post by  IDoMy0wnRacing 
#1 ·
I upgraded a month or so ago to a set of Toyo Open Country ATIIs in 215/70/16 on my 4x4 Latitude, but that puts the speedo off by about 2 miles per hour at 70MPH.

I had it in for an oil change yesterday and asked them to calibrate the speedo for the larger tire, and they told me there is nothing they can do about it and to just live with it.

This seems like a totally bunk answer to me - anyone know different?

Thanks!
 
#3 ·
Same here, no recalibration. I'm thinking about changing factory 215/60/17 to 225/65/17, and the speedo would be 5 km/h faster.
 
#16 ·
USUALLY, the dealer can correct for tire size with in a specific degree.

In the scan tool it is called a "Pinion Angle Adjustment". Nothing to do with adjusting the pinion angle, but that is the sub-menu when the tire size adjustment can be made.
 
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