I replaced the 12-year old Carlisle (USA-made) ST 205/75-D14 bias-ply tires with new General Grabber AT2 27/8.50-R14LT "floatation" all-terrain tires, for highway and light off-road use; plenty of space within the fenders for wheel travel, though the squared-off tread profile sticks out 1.5" from under the fender (the ST tires had rounded tread profile, staying under the fenders)-I'll have to install fender flares to extend out over the tread