But (in my opinion) the best solution is to replace the regular valve stems with “dually valves”. Expect to pay about $200 to purchase a kit and install on all four rear wheels. The tires need to be dismounted and remounted at a tire store. I know it sound ridiculous to spend this much or go to so much trouble but it puts both valve stems on the outside for easy access and is virtually leakproof. Also, if you want to use a TPMS system, it makes it easy. Try as I would I could not get my hand through the wheel hole to install the senders. And god forbid if you should drop one between the wheels! And, FWIW, I consider TPMS an utterly essential piece of kit. Good luck.
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