I bought two sets, one for each 65 the kids are riding. Installation was easy for all but the first rear but this was probably my error rather than the tire. Tread pattern seems good and aggressive. Tread held up well and, after a two hour ride, the injection nipples were still showing. You can't go wrong with these tires at this price. Sure, name brands might be a little better, but unless you or your kids are competing for a championship, you likely won't notice any difference. As the only "sponsor" for my two boys, I'll keep buying Artrax tires to keep them going. Had them in only days.