Found this, don't know how accurate it is though:- m http://www.polo-gt.co.uk/mechanical/tyrecalc.html (http://www.polo-gt.co.uk/mechanical/tyrecalc.html) m
It's basically the same as the one on Miata.net, but they both seem to work.
Quote from: "ooch12"don't know how accurate it is
It's as accurate as the values you enter s;) ;) s;)