I would hate to depend on a 3 gal tank to change a tire and I’d say maybe on a 5 gal tank. The good thing about karting is there are allot of people with compressors at the track that would let you fill your tank.
FAA certified jet engine and aircraft technician,
Nicholson Speedway class champion 2001,
Yamaha KT100 Service Center,
41 years karting experience