Could someone tell me what tire size I should be entering in with 37x13.5x20 toyo m/t's? Thanks

 

Why doesn't Toyo use metric sizing like the more established brands? Do they just want to be "different"?

Ok, your question: Multiply 37 by 25.4 to get the diameter in millimeters (939.8). Multiply that by pi to get the unloaded circumference (2952.47). Subtract about 3% (88.57) to account for "squish", and you get (2864 mm), a rounded value for loaded circumference that's a good starting point - assuming you keep your tires inflated to the recommended pressures.

- Jack

 

Thanks for the help Jack, I sure do appreciate it. You just saved me alot of frustration.

 

Jack, it's not just Toyo .. Most tire companies use the "standard" of inches for larger tire sizes.

 

Thanks, I did not know that. My ignorance amazes me sometimes. :o Wonder why we can't settle on one way of doing things?

 

It doesn't amaze me. I KNOW you are pretty near as ignorant as I am.

 

Thanks a heap, buddy! Oh, well, at least I'm in good company!

- Jack

 

That'd be way too easy ...