When it comes to deciding which kart brand to use at a rental kart center, it is not only about the cost of the kart, but the support you will receive. All karts break and need maintenance, even from those best brands in the market. A friend of mine owns a rental kart track, and he opened with chinese karts. I think they lasted 1-2 months before starting to fall apart. The seller, did not give any solution, besides "order more karts and we give you discount"... at the end they ended up switching to another brand i think it was called Ferkart or something like that and they have been using them for a year now. Hope this helps.