While I like the idea of higher profile tires, I don't want to take any chances tearing anything up in the event of suspension failure. Additionally, I need to use access height often to get into the garage, etc. It just isn't worth the risk. Furthermore, doing quite a bit of towing lately. The vehicle is geared for the tire size specified 255x60x18, so you will lose some power with larger tires as well. After the switch back, the truck seems to have better shift points, and mileage is as good or better than with the larger tires. Additionally, the k02 is a lighter tire, which is also a benefit. With properly inflated tires, the rim should have adequate protection with the 60 profile. If you get into some rocky terrain that extra height is not going to do much if anything for you anyway, IMO.