I currently have 2 discos sat on my drive, one standard, one not, the non standard one has 235 85's insa turbo saharas, and a 2 inch lift, the fron on the truck is about 3 1/2 inches higher than the standard one, the rear is 4 inches higher, however, only 2 inches of that measurement is under the axles, which is what matters most!! however, in oerder to fit the bigger tyres, you really need some sort of lift to get the best out of it all....
Hope that helps a little!!