I have extenders on my currant rig and I check the psi before every trip. Takes 15 minutes at most including dragging out the small air compressor. On my prior rig I bought a set of stainless extenders but never put them on because I would of had to pull the outer rear of the duals. What I did then was use one braided extender that was supposed to go on the inner wheels as an extension hose. I was able to get my hand inside of the wheel holes to remove the valve cap, screw on the extension extender hose. check and adjust air as needed. Worked great in lieu of having the extenders mounted.