http://cgi.ebay.com/ebaymotors/Land-...spagenameZWDVW

it looks like a 275/65/18
dose that actually fit i thought it would be to tall?
cooper discoverer STT if i am reading that correctly

 

Take a look at this page too.

http://blog.nextstepdesigns.com/?p=46

 

Pay attention to Nathon on that site, he has more hands on the most.
Depending on the type of wheel you plane on doing, you can run up to the 285's and make a great trail rig with the right tire. I have a number of friend who run the Nitto with great results.