I always thought the R/Ts tires looked a bit small in the wheel wells- sorta like an old Nissan Hardbody. When it came time to put tires on mine I found the perfect tire.
Dunlop Sport 5000 275/55/17
The same tire that Mercedes used on the ML made in Vance Al. They really filled out the wheel whells, did not rub and with 10 inches of rubber on the road, it enhances that bull dog stance.