I have had tires pop the beads very easily. I always clean the wheel and use a mounting lube. Getting enough air (flow) at once helps. I have a 10 gallon tank and it last a good while if things go right on mounting. For just topping off tires it last forever. If I find a leak I fix it.
The beginning of the year I had a pair of rear wheels that made popping the beads a task from hell. Almost nothing seemed like it helped. Just getting the tires on the wheel was really bad.
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
We have a little portable Ryobi battery powered air compressor we bring with us to every event. Set it to fill the tire to, say, 30 psi, and it’ll mount as many tires as the battery will last. It isn’t as fast as a super high pressure tank but you’ll never run out of air