37'' Toyo Revs Per Mile

Just got a set of 37x13.5r17 Toyo MT's on the truck and uploaded SVC Tune this morning. I've seen multiple people say to set the Revs Per Mile to 545 but the Toyo Website is claiming its 560. So...can anyone comment on this? What did you set yours to and how accurate is the speedometer?

Heres an somewhat easy way to check and get a number that is very close to what you're looking for.

Jack up one wheel. Put a cloth measuring tape around the center of the tire and make sure its tight. Let the wheel down with the weight of the truck on it. Take up any slack in the measuring tape and write down that number. Then divide that number into 63360 (that by the way is how many inches are in a mile). And there you will have your revs per mile. If you can't find a measuring tape that long, then use a length of string and measure that. But make sure you measure using inches.

You can also use Toyo's website for the revolutions per mile. They list under the specifications.

Some people don't read the entire initial post.

I think they mean just use 560

Just an FYI for others - set at 560 the truck is roughly 2 miles per hour slower than the speedometer reads.