Outer Limits 4x4 Board

a little web page i found to calculater tire size etc for those imperial sizes

http://www.miata.net/garage/tirecalc.html

thanks rob

Or this one
http://www.tyresave.co.uk/tyresize.html

HOPPY

And this one:

http://www.1010tires.com/TireSizeCalcul ... ion=submit

http://www.redrock4x4.com/tech/tire_calc.php

that one's an imperial metric calc, handy for schmucks like me