TYRE SIZE CALCULATOR

[Caterman]

I use this to check size compatability.
http://www.miata.net/garage/tirecalc.html

Edit by Andy - Ive split this off and made a sticky here as its very useful, thanks Caterman.

[marichrd]

try here too: http://www.chris-longhurst.com/carbi...additives.html

[tomo63]

Try here: http://www.etyres.co.uk/tyre-size-calculator.htm

[solorider]

another tyre site,this tells you what the load rating means http://www.tyresave.co.uk/tyreload.html

[Leemarksmith]

And another one, with a nice little visual: http://www.willtheyfit.com/