will 265/70/17 on 8.5" wheels still correct the speedo?

i'v read that 265/70/17 correct the speedo, but i am not sure if that means on the stock wheels on not. (7.5")

with an 8.5" rim, i imagine the 'stretching' and bubbling effect may affect the circumference?

a correct speedo is very important to me, another speeding ticket will severely screw me as far as insurance

 

Any increase or decrease in MPH on the speedometer is negligible when it comes to changing out rims as long as the size change is not a ridiculous. My myself honestly, I would not stress out over a 1 MPH increase or decrease. I really don't think CHP or local LEO's would give a damn either. I'm just thinking out loud here.

 

with my stockies and 85% worn tread, i am off by 6mph at highway speed.

i heard the 265/70/17 makes it dead-nuts with GPS

 

I don't know anything about dead nuts, but I regularly pass by speed trap cameras going slightly faster than the posted limit. I run the size in question and have yet to receive a ticket.

 

When I went with 265's, my speedometer was reading the same as my GPS. Before with the stock tires, it would read a lot slower. The wider rim wont do anything. As long as the diameter of the TIRE and not so much the WHEEL, I don't think it will matter. Same thing goes for the width