I have personal experience with the SSRs. I have them on my other truck (F250) and they are great. They handle as smoothly as my stock bridgestones on the Taco, and are only a little louder. On an old truck, the wind noise at 60 is louder than the tire noise. You can hear them a little at slower speeds, but it is no where near what a bias swamper sounds like. As far as mileage, I would think that with proper maintenance and rotation, they would last as high as 40-45K on something light, like a Tacoma. A friend of mine has them on a bronco, and has about 25K on them, and they are about 1/2 tread. They are expensive, but REALLY worth it.