04disco2va, Its a LT275/65R18 they are 32.1" dia. and OME springs and shocks 1.5" lift, No rubbing. They now have the 265/60R18 and only 30,5" dia. I am sure this will fit without a lift. I am planning to get those coz I dont want to lift my other disco. I ran over 80K miles on them and still have reasonable thread, likely because its 10ply.

 

LR03NJ - Thanks for the reply yesterday. Yes I really didn't want to do a lift. I ordered the duratrac's last night, but went with the 265/65-18. I wonder if should have gone with the 265/60.

 

Hopefully it will fit without rubbing. The factory original is 29.00" diameter and you got a 31.5" replacement. Mine, right now is a 32.1" diameter and will fit without the OME 1.5" lift but I never tried without the lift coz I got the truck lifted first before purchasing the tires. So, for me its untested. Once you have yours installed, you will have a minimum of 1.25inch clearance on both ends of the fender. It will fit but I have no idea if it will rub once you turn or drive up a curb while turning.
I think I saw somewhere that if you add wheel spaces, it might eliminate some rubbing (or not) if it happens or the suspension spring spacers as well. I cant be technical about those, I just compensate by getting other upgrades so that the 1st upgrade will work. Anyway, I hope youll be happy with your new tires. Cheers!