this post was submitted on 16 Jun 2026
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The problem with that is that the first tire tech who responds to the flats, will spot the missing valve stems, and replace rhem. It also takes a lot of time to do it.
The better move is to just unscrew the caps, and drop a BB in the cap and screw it back on. The BB will press slightly on the valve stem, and cause a slow leak. The tire tech will search and search for the source, but he's unlikely to look in the cap, and he probably won't notice the BB in the cap anyway, so it will become an ongoing problem.
Lol I work in a shop, and while I'm not saying your wrong I would like to share a story. Had a customer get towed in, they were driving and got a flat. AAA came and swapped their spare on for them, shortly after they got another flat. Being out of spares they had it towed to the shop. 2 flats in one day same corner 2x in a row u got any guesses? Well when I get to it I notice the spare has a chunk knocked out of the inside of the wheel. I go to take the flat off and surprise! Fucking chunk out of the other wheel. 2 wheels with holes right through them! Caliper lost the lower bolt, so under braking it would pivot up on the upper bolt and wedge into the aluminum wheel so hard it blew a hole in it and locked up that corner. AAA came and swapped that wheel without going "hey ur fucking brakes are falling off" so I sort of doubt they will notice a missing valve stem lol. AAA also totaled my Audi last time they towed it with a single wheel strap and it let loose on the roll back, so I have VERY little faith in the roadside guys seeing anything lol.