I drive 3 to 4 thousand miles a year. I am replacing 5 year old Michelin XZE 255/70/22.5. The Winn. D.P. calls for 255/80/22.5. 80s are not as easy to replace on the road 70s run fine.Looking at HERCULES Strong Guard HRA. 6 tires, 2 axle mechanical b...