I know it sounds crazy,the best tyres are chaep moto cross tyres. I used to try alsorts slicks, wets,road tyres, then bens bike racing MX riders turned up at a12 karters on nobbles they were riding fantastic, I tried one of there bikes now I won't use any thing else. I know it doesn't make any scence but they really do work. They grip very well when they let go it is so predictable, you can back it in drift and power slide out . THEY REALLY ARE THAT GOOD.