Thread: Tyre calculator

Originally Posted by Brian Hjelm

Neither of those calculators will recognise 31 x 10.5 x 15 as a valid tyre size which makes them pretty well useless for working with the 4WD tyres many of us are using.

Try this one Brian:
http://www.1010tires.com/TireSizeCalculator.asp

It even does the 7.50 x 16 tyres.

Originally Posted by loanrangie

How did the 255's fit ? looking to swap my 265/75's for 255/70's.

They were on the car when I bought it and as far as I can tell they didn't rub anything. I took the car offroad twice in the time they were on. On the second trip I put a gash in the sidewall big enough to put my hand in. Then switched to the legal sized 225/75 16.
The previous owner did mention he would get 245/70 16 next time around but I forget what the reason was.

Neither of those calculators will recognise 31 x 10.5 x 15 as a valid tyre size which makes them pretty well useless for working with the 4WD tyres many of us are using.

31's are 787.4mm in overall height which is around about a 235/80/16 (782.4mm) tyre