Has anyone here made the switch from light truck to passenger tires on thier SUV or truck??..I'm due for a new set and my current tires are BFG AT 31x10.50/15 (OEM size) on my 91 Pathfinder..My commute are 100% highway with no towing and no heavy loads. Would I notice anything from the switch? I want a longer treadlife and more highway friendly tires and also if It'll help the gas mileage thats a plus too..my only concerns are winter traction with the a/s tires versus my current all terrain...any feed back is appreciated