I have 215/70r16 BFG AT's on mine, no negative performance changes only a stunning drive in mud and snow
. Really adds to the look too, not too big but you definitely notice the size difference. About 1.8 inches larger in measured diameter than my road tyres. There are modulars for the Freelander somewhere, the stud pattern means you can't use other LR ones. Seach and ye shall probably find.