Disclaimer - Not a JEEP issue that I am aware of. But there are a lot of folks here on this forum that know way more about tires than I do. A friend of mine at work has a a problem with the back tires having the valve stems pop out. It's happened a couple of times already. Who has seen this happen? Any ideas?

 

What's the vehicle, normal or TPMS stems, stock or aftermarket wheels?

If I make up my own answers to the above questions and said normal stems in aftermarket wheels, then it may be a wheel issue where the hole is too big and/or the stem doesn't seat properly.

Of course it can always be installer error.

 

you could always use solid ones that bolt on. sounds like a rim problem. they do make bigger valve stems for bigger holes but there is a noticable difference(the smaller one would come close to sealing in the larger hole.

how often does this happen and like stated above, we need alittle more info