315/35/20 uh oh maybe ran into some problems

[Need4SpeedMotors]

For all you guys running 315s, how did you get your speedo recalibrated?

A tune will fix that or any local dealership can do that for a small fee, I think its the cost of 1 hour of labor tops but it doesn't take that long.

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[GS89]

A tune will fix that or any local dealership can do that for a small fee, I think its the cost of 1 hour of labor tops but it doesn't take that long.

How many mile difference are we talking about with the 315's. I ask because i just put some 315/35 nitro nt05s today