Rims n Tyres calculator

http://www.rimsntires.com/specspro.jsp
 
Hi, Can we make this a sticky please? It's so hard finding this particular calculator with google,  it would be nice to have it saved here :)
 
Thanks

This is just a suggestion 
A lot of forum members would be familiar with the Capri Power Forum, they have  techinical archive with pined posts in sub sections for different topics i.e. electrical, steering, brakes and so on
Could be handy.