EPCO

Wanted to give anyone with these the setting to make the correct speed on the speedo. I have 285/75/17 Nitto Terras and have the Smarty Jr ABS set to 32.70. This is spot on with a GPS.

Lost Lake

Wow, that's different than mine! I have 285/75R17 Nitto Duras and I have mine at 33.6 and it matches my GPS. Maybe because of air pressure?

EPCO

I have no idea. I thought all tires of this size would equal the same setting.

Danderson

Mine's set at 33.1" for the same size tire.

Lost Lake

Not really, when you look at the manufacturer's data, a lot of similar sized tires have different revs per mile.

I think it's because they may have a tire that is 282 wide and the height is 73% and another tire may be 287 wide and 77% in height. Both these tires would be called a 285/75 tire. One would be an inch taller though!!!