I blew a tire on my Polaris Sportsman while camping, needed tires but none available at local dealers. Found these at MotoSport cheaper than the dealer could order them for, Discount tire was half the cost for install (off the quad) than the dealer. I ride on loose dirt and rocky trails, these handle the trails very well. The ride is smoother than the Maxis tires that came with my sportsman, even on the paved roads in the campground. With the ITP Bajacross ATV Tire I was able to get up to speed on the trails without any slipping or sliding, even in tight turns. The sportsman is a UTV designed for dirt roads and trails, not a racing quad, but reaching 40 and 50 MPH is really cool and felt very stable, I wish the trails had longer straights so I could have really maxed out my speed. As to wear, I have only put about 10 miles on them so my opinion will have to wait. I will recommend these to anyone with a quad at this point, they seem to be well built, they are heavy, and seem solid.