12 volt compressorNot cheap but I am tired of the junk compressors that just don't survive. Junk regulators and tank hoses.
This thing is small enough to be carried and comes with a nice bag that holds everything. You will have no issues reaching any of the tires.
I bought a mount for it and keep it in place with wing nuts in case I want to take it out. It airs fast enough and has plenty of power. Hopefully this will be the last compressor I need.
The onboard engine compressor is a pain to use because of the high pressures I need for the tires. Running this in an enclosed compartment (plenty of cool air), keeps the noise very low.,