There are many tires and compounds out there. The rubber on most of the tires are pretty good. But where the problems come in are the rims....The twister rubber is good but rear rims move slightly from side to side. The best foam is GRP Fast Tires. The rubber/rims are good but they are expensive......I agree with going with cheaper tires but sometimes you get what you pay for. The cheaper tires are going to give somewhere to save and make costs low. So be careful when buying off brands make sure fit and rubber are consistent.