| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,090 Posts1,056,026 Members48,432 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Mar 2011 Posts: 277 'Bolter | | 'Bolter Joined: Mar 2011 Posts: 277 | Hi list
I was just on the phone with Coker Tire trying to order a set of tires and tubes when the question arose of what size valve stem I have. Unfortunately I am still a looong way from home so I can't measure it but I was hoping one of you could help. The wheels are 4.00 x 16, lets say they came off a 1950 Chevrolet 3100 (just guessing). Can someone kindly tell me what the hole diameter in the rim is for the valve stem? The choices are 3/8 or 1/2. Thanks!
1955 First Series 3100
| | | | | Joined: Apr 2007 Posts: 1,038 'Bolter | | 'Bolter Joined: Apr 2007 Posts: 1,038 | I have one extra wheel which is unmounted and is 4.00 x 16, six lug. I measured the hole and it is 5/8. This wheel is for both my '42 and '51, so I assume it is the same as yours. It had a tubeless type valve stem in it which I removed to measure. Possibly someone drilled it out? It is definitely 5/8, not 3/8 or 1/2. Maybe someone else can offer advice.
Kent | | | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | Valve stems got smaller in the mid 50's. 5/8" was standard for the large stem and the small that became popular in the mid 50's measured a little less than 1/2". I have never heard of a 3/8" valve stem. | | | | | Joined: Mar 2011 Posts: 277 'Bolter | | 'Bolter Joined: Mar 2011 Posts: 277 | Thanks for the responses, I did clarify with Coker, they are selling me a TR11 valve stem with a grommet so it will be indistinguishable from the TR15 (which is the 5/8" one). The gromet idea sounds hokey to me, does anyone have experience with this set up?
Thanks,
Joe
1955 First Series 3100
| | | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | When the smaller stems became popular, it was common to use a grommet. It cut down on our tube inventory. We didn't have to stock both stem sizes. We would just give the customer an adapter if he had the 5/8" hole. There is nothing wrong with using the grommets. We weren't concerned on how they looked in those days. 5/8" stems that you can vulcanize on can still be bought. We used to vulcanize stems on all the time if someone either hit the stem with a tire hammer or if someone mounted a tube off center and it rubbed a hole in the stem. I wouldn't recommend cutting a small stem off in order to vulcanize a 5/8" stem on. I'm not sure how well today's tubes vulcanize. | | |
|
|
| |
