After trying to fit tubes in tires I have discovered there is not enough clearence to run a 2 tube setup on the front.I did not buy more tubes because not even a bent valve stem will clear steering parts.Going to keep looking for a wider tube so I can run 1 tube in front tires.Yes guys are running a go cart tire with adapters but the only tires I have seen are really heavy and are a tubeless design.Going to continue research,any ideas appriciated.