Wheel Valve Stems Early Mercedes

[aluminum]

What is the part number for the Small " Diameter " Valve Stems for a 1967 250 S or SE type Steel Wheel ? I can't seem to find them >
They are old and would like to change them out



Just plane Rubber on the outside simple valve Stems about 1/4 inch hole in the wheel ( unlike the later common 7/16 Hole most tire shops have )


Where can I buy them cheap not from the dealer most likley ?


I expect once I know the correct part number and perhaps Brand perhaps

I can find and buy some ?


What is the Exact Hole Diameter in Wheel ( inch ) anyway ?


It seems Mercedes used these very Small Valve Stems perhaps for many years ? I am not sure ?
No tire shops seem to have them that I can find ? they tell me to get them from the dealer humm


Any one Know or have a Link to the correct Valve Stems and perhaps a Part number so I can look them up ?


Thanks in advance

[SickFinga]

Part number 0004000313 It's the same stem that is used on current steel wheels.

[aluminum]

Originally Posted by SickFinga

Part number 0004000313 It's the same stem that is used on current steel wheels.

Thanks for reply

I wish it was My Wheels have a Wheel hole Diameter ( for the stem ) of about 1/4 inch for the valve stem .
Your 0004000313 part number is 0.453 and fits later Mercedes and most all car's I am not sure

I am seeing they have a 1967 Mercedes 7 MM there are 0.276 inches in 7 millimeters
I think that's the size I have

As far as i know the wheels are OEM Steel Wheels 1967 SE sedan
and again the Stems look to be 1/4 inch so 7 MM sound correct ( or 1/2 the size as normal )

Tire shops i called are telling me some Mercedes have small ones and some the standard larger ones ?

if I can't find them Perhaps I can drill the holes out but then they well need to be "Chamfered" on the edge or most likley it well cut the stem .

Perhaps I have some Euro wheels as I am also seeing 7 MM Valve Stems
on EU Sights for Mercedes .
Trying to put a handle on this humm

[rumb]

I have a 67 250s for >40 years and have never had any issue with several tire sets installed.

A 00 040 003 13 is listed in EPC as correct,

[Mike D]

You might want to check with Tirerack.com. They'll probably have the scoop you need.

https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=208

[aluminum]

Originally Posted by rumb

I have a 67 250s for >40 years and have never had any issue with several tire sets installed.

Thanks for Reply
Ok 40 Years and your 67 Has ? I presume the Larger size good for you !
Or perhaps You have the Smaller size but you have no Problem finding that size .


Now I Know and respect your Knowledge because I follow your reply s at times and agree with them .
I am not with the wheels just now or I would post a Photo and such but after the weekend develops I can .


I am beginning to think the wheels that appear to be correct as the Year model type are actually from a earlier Model Perhaps ?

They have the 3 Nubs that hold the small Hub Caps and the beauty rims where on them as well .

I did not Look at the ones I am replacing to see what size the Valve Stems are but well when I return Home ( the Rim's I am replacing have some rust on them ) Both Cars are 1967 250 S and a 250SE one a parts car and a Keeper . Are for this Car that's on the mend .

[Benz Dr.]

I've never had a problem with valve cores on any of my 50's or 60's cars. Biggest problem is trying to find tires. Even 14'' have fewer selections every year and 13'' isn't available anywhere unless you go to a specialty operation.

[aluminum]

I got bored looking for the small Valve stems and just drilled out the Hole in the wheel to the standard size about 450 thousands . Some kind of Euro wheels I guess ?

[nordfisch]

Hi,
maybe the steel wheels with 7mm were meant for tube type tyres.

You have to check: Do the wheels have a double hump?

Wheels with a double hump should carry a 'H2' behind the dimension stamp.

Wheels without or with a single hump are not so safe in extreme situations when being used without a tube.

Regards
Norbert

[alfred0809]

Aluminum alloy coil 1070, from 0.1mm to 8mm thick, features high plasticity, strong corrosion resistance and good conductivity. Containing 99.7% aluminium, it’s usually made into structural parts with special properties, such as protective walls, wire cores, vent line parts, plan ornaments and so on. In addition to aluminium, 1070 aluminum coil consists of 0.04% copper, 0.03% magnesium, 0.04% zinc, 0.03% titanium and 0.05% vanadium.

[strelnik]

Originally Posted by aluminum

What is the part number for the Small " Diameter " Valve Stems for a 1967 250 S or SE type Steel Wheel ? I can't seem to find them >
They are old and would like to change them out



Just plane Rubber on the outside simple valve Stems about 1/4 inch hole in the wheel ( unlike the later common 7/16 Hole most tire shops have )


Where can I buy them cheap not from the dealer most likley ?


I expect once I know the correct part number and perhaps Brand perhaps

I can find and buy some ?


What is the Exact Hole Diameter in Wheel ( inch ) anyway ?


It seems Mercedes used these very Small Valve Stems perhaps for many years ? I am not sure ?
No tire shops seem to have them that I can find ? they tell me to get them from the dealer humm


Any one Know or have a Link to the correct Valve Stems and perhaps a Part number so I can look them up ?


Thanks in advance

FWIW I am looking to replace all my rubber tire valves with steel-reinforced ones so they don't leak. Blockley Tire company hav many articles on tires and tire issues. Google them and read the articles. They do talk about 7mm valve holes on post-war euro cars.,

[Idle]

Uxcell ( I think that is the name) makes 7 mm tire stems for tubeless applications. At one time 7 mm was the Euro standard for bicycles, motorcycles and autos. If you were in Europe.

This was the standard for tube tires. Try searching for 'tyre stems, 7 mm'.

[t walgamuth]

To the op, how did you measure your hole?

[fonzi]

I don’t know what the measurements are but recall three scenarios. (FYI, I have installed maybe 100 or so tires, so while no expert, I’m not totally clueless either.)

1) I got a BBS RS lip that appeared to have a presta sized valve stem hole in it, like you’d see on a higher end bicycle or a road bike. My $700 mountain bike has presta valves. You have to unscrew a bit before putting air in or taking it out. I think I traded or sold this pair of BBS RS lips, but always assumed I was going to have to drill the holes bigger to use standard valve stems.

2) standard Schrader valves are what we normally have on our cars, and my BBS RS and most early bundt wheels see to use metal re-usable valve stems which I like a lot. You can tighten them down and loose the them up just like a TPMS valve stem, and you don’t have to cut them out the way you have to with rubber valve stems. I’ve got a massive bag or two of these rubber ones I bought and left at rwd4evr ‘s shop because he lets me use his tire machine. (I buy wheel weights too.)

3) I bought a cheap “scrappin’ trailer” that has mobile home style axles and 14.5” tires/wheels. I bought new wheels (really just hoops that the big 5-star hub crudely attaches to) and tires for it, and discovered that the valve stem holes are LARGER than standard schrader valve stems that every car rim seems to use. I think they might have been 1/2” or even larger. These wheels need to be run at 80-90 PSI and they DO NOT have the hump for the bead seal. The dry old tires I had for these kept popping off the “bead” because they would leak and have nothing to hold them in place. I can’t tell you how many times I put bead sealer on them and sprayed starting fluid into them and then tried to get air compressor air in them while batting out flames to try and get these damn tires back on the rims with no bead seat. I really wanted to install tubes in these, and will consider it if I ever have to use those old tires again. Anyway, I bought special fat-neck rubber valve stems for those mobile home rims.

Aside from the BBS hoop mentioned above in 1, I’ve never seen a presta-sized valve stem used on a car. I believe they do exist though.