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Rant: Spent 2 years airing down my tires wrong at Moab
I've been hitting trails in Moab for almost 2 years now and always aired down to about 15 psi because that's what some guy on YouTube said. Last trip out a grizzled old jeep guy stopped me and asked why my sidewalls looked so flat... he pointed out I was overloading my tires for slickrock. Turns out I should have been at 18 psi for my rig's weight and tire size. He showed me the chalk test right there in the parking lot at the Poison Spider trailhead. Now I'm wondering how many times I risked a bead blowout on those ledges. Anyone else realize they've been running wrong pressures for years?
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evan2952mo ago
Funny you mention that chalk test. My buddy Bill ran his old F-150 on 35s at like 20 psi for three years until we borrowed a trailer from a guy who worked at a tire shop. Guy took one look at his tires and said the chalk looked like a toddler drew it. Bill was dead set he knew better. Next trip out he blew a bead on a sharp rock at Sand Hollow. Took us two hours to fix it with a high-lift jack and a ratchet strap. He started carrying a piece of chalk after that. Still runs 18 psi on everything now though.
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