If you can afford BF Goodrich A/T's then doo, they will cost around the £480 -£500 for all 5 tyres.
I have had them on 2 disco's and the are fantastic, I get around 48,000 miles out of them and thats on road as well as off road
very good tyres and don't for get a set of locking nuts for your wheels
try
http://www.johncraddockltd.co.uk/
http://www.mm-4x4.com/tyres-359-c.asp
http://www.paddockspares.com/sp/category/S...ain_T/A_KO.html