You can also swab some bead sealer onto the hole and/or stem to help seal minor leaks.

The older 16" steel rims with the oval valve stem holes were originally built for tube type tires. Most are now being run tubeless with the newer oval type valve stems. I suspect the oval valve stems are not as common as they once were as tube type rims have been phased out 20 - 30 years ago and only dinosaurs like us are still using them.

If you tighten the nut on the outside of the wheel, they will probably hold fine, but it's probably a good idea to replace the stems with new ones with fresh rubber washers at some point.

Carl S. wrote on Wed, 28 December 2022 20:37

The older 16" steel rims with the oval valve stem holes were originally built for tube type tires. Most are now being run tubeless with the newer oval type valve stems. I suspect the oval valve stems are not as common as they once were as tube type rims have been phased out 20 - 30 years ago and only dinosaurs like us are still using them.

If you tighten the nut on the outside of the wheel, they will probably hold fine, but it's probably a good idea to replace the stems with new ones with fresh rubber washers at some point.

Will do - Not sure where to buy new ones tho! I already tightened things up a bit using pliers but plan to re-check with a deep socket next time I swing by. For the moment pressures are holding as temps have gone back to something like normal, ~ 40°-45°F.

Last week on Vancouver Island the arctic blast took things down to 10°F

Thanks

Larry

I bought mine at an auto parts store about 10 years ago.

Ones with an Oval base plate? I saw the round ones you linked to and they're easy to find but not seeing the type I have?
Larry

https://www.amazon.com/Milton-476-Oval-Tubeless-Valve/dp/B001O2ZTSQ/ref=sr_1_28?crid=K8HJBK8VTV5K&keywords=oval+valve+stems+for+tube+type+wheels&a mp;a mp;qid=1672365289&s=automotive&sprefix=oval+valve+stems+for+tube+type+wheels%2Cautomotive%2C199&sr=1-28