Hypertech Speedometer for 265/70R17 Tires

[Nick777]

What tire size did you enter into Hypertech to get the most accurate speedometer reading? Going from 265/65R17 to slightly larger 265/70R17 Falken A/T 3.

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[Dgc333]

Just look up the revolutions per mile listed on the manufactuers web site or Tire Rack for the tires you are using.

 

[JohnnyO]

265/65 to 265/70 isn't enough difference to matter much.
My bud hooked up Forscan on mine, I went from 255/65 to 265/70, but we had to tinker with it a couple times to get it right. Entering the actual circumference from the tire manufacturer's website didn't give a correct speedometer reading versus the GPS.

 

[AzScorpion]

What tire size did you enter into Hypertech to get the most accurate speedometer reading? Going from 265/65R17 to slightly larger 265/70R17 Falken A/T 3.

I changed my tires to the same size as yours Nick and went to 638. It's close now and I used this thread here as a guide.

https://www.ranger5g.com/forum/threads/livernois-tuning-released.2036/page-16#post-139464

 

[bullard1255]

What tire size did you enter into Hypertech to get the most accurate speedometer reading? Going from 265/65R17 to slightly larger 265/70R17 Falken A/T 3.

Did you pull any fuses when you used the hypertech?

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