New Tires and Speedometer Calibration

My stock 255/65 General tires are beginning to separate in the sidewall. I need new tires soon! I hate the small tires and want to go bigger. Does anybody have any experience recalibrating their speedometer? Or, are all of you 2001 SE owners driving around with a jacked up reading on your speedometer?

I'm thinking either 265/70's or 265/75's? I know mud flaps will need trimming. Is that all?

oh boy, they are gonna let you have it for not searching on this.

I have got 32" BFG M/T's and i have not calibrated my speedo, i dont really think its off that much, maybe by 1-3 mph but nothing to worry about. And yes you will probally have to trim the mud flaps. I took mine off and then trimmed the plastic peice on the fender a little and its fine.

I got the 265/75r16 and the guy at Discount tires said to expect an 8% difference. Have not tested that out yet.

31x50's and no noticable difference here my GPS says exactly what my speedo does.

I think my speedo is off by about 8-10% with 265/75/R16. No plans of selling, but is there any legal obligation to mention this considering the odometer would be off as well?

Hmm might be but not sure. At any rate unless you kept the truck for over 100,000 I wouldn't think the odometer would be off that much.

No obligation to mention the fact that the odo will record fewer miles than you actually travel. All the odo really records is the number of revolutions that the driveline has made, which is what is relevant as far as component wear and lifespan. How far the vehicle actually travels across the landscape as a result of those driveline revolutions is completely irrelevant.

255/65R16 has a circumference of 91.27 inches.
265/70R16 has a circumference of 96.14 inches.
265/75R16 has a circumference of 99.42 inches.

Dividing them you get a 5.3% difference for the 265/70s, and an 8.9% difference for the 265/75s.

However, your speedometer probably reads a bit fast with the stock tires, so your actual difference will probably be less.

Brent

Well, I don't think that the 265/75's will fit on my stock 01 SE so I think I have decided to go with 265/70's. There are some good looking A/T tires out there but all the aggressive ones come in 8-10 ply. Won't those be a little stiff?

The Duleler Revo A/T has a P rated tire option that will still have the appropriate load rating while at the same time giving you a ride that is acceptable on the road while still having off road A/T tire performance.