Not sure about you guys, but airing up and down takes forever and bending over to do it isn't fun anymore. I decided to put (5) schrader valves (1 at each corner and a single schrader valve up front), dot rated 1/4 od tubing, and (3) 1/4 tee push fit connectors. I also made (4) 24" air line with air chucks at each end to connect each tire to each valve stem. RH side view of both Front and Rear: RH front: RH Rear: Centralized air inflator/deflator: Tested to hold air with all 4 tires equalized pressure: To deflate, I simply attach all 4 blue air line extensions to the tires and deflate all to 30 psi. Detach rear blue airline extensions, deflate the fronts to 25 psi. Done. Now I'm 100% sure the front has equal pressure at 25 psi on both L and R sides. And the rear is the same equal pressure at 30 psi. To inflate, attach all 4 blue air line extensions and inflate all to 40 psi. Detach the fronts and inflate the rears to 45 psi. Done. I'm using a Viair 400p and airing up is a breeze.