My truck runs great on the road. At an indicated 58 MPH I guess I'm going close to 70MPH with 35" tires. I went with BFG mud terrains and they balanced perfectly- no vibration at any speed I can reach!!!! Handling is great- not as top heavy as I had feared and I believe a lot of reason for that is my using the wider than stock (by 3 inches) FJ62 axles front and back. The FJ62 power steering setup done ala Mark Whatley works great and the high steer components from Luke Porter are fine, too. I have absolutely no regrets about my spring over and would do it again in a minute. As long as the person doing the work is competent, patient and careful it's a big improvement in all ways (except for ease of getting in the truck!!!!). Gary S