I mounted these on our SUV tires. It drives very smooth now and I am impressed with the action they offer as the tires no longer make that humming noise on the freeway. The biggest downside was getting them in the tires. I don't have an engraving tool so I used my air hose and used small jets of air to gradually push the beads in. I was very slow, it took 45 minutes for the bus. Next time I buy tires I will ask the store to deliver when they mount the tire. I think it took a long time, but it was worth it.