Change of tire height

If I change my 15 inch tires to a slightly taller 15 inch can a Toyota Dealer reprogram my speedometer for the new tire height so my speed is correct?
Bill

 

That sounds like something to call them on. I know there have been a few programmers that do that, like JET programmers. This way you pay about $130 to do it yourself, and make your own adjustments. I haven't looked to see if they make these for the 2nd gen Tacomas yet, but I know they made one for older Tundras. Truthfully though, depending on the size of tire you are going to, there isn't really that much of a difference in the speedometer.

 

Stock speedometer is about 4-6% fast anyways (compare it to a GPS some time, 70 indicated is really around 65).

Bumping up to a 235/70-15 or a 225/75-15 will get your speedo a little closer to reality.