Tyre valve stem leak

All usable wheels need balancing. It is possible to diy them with gear to allow the wheel to rotate freely, 10g weights and multiples are needed.
As for grot, post #51 shows an alloy wheel with a centre that needs cleaning.......a rotating wire brush on a drill is perfect.
To remove the tyre you need the rim to be secured, a centre pillar that goes through the wheel centre and a long smooth bar that you pull on to ease the tyre over the rim. Crowbars will tear the tyre and shred the rim.
I should say, I'd never attempt this with a car wheel, I limit my experience with lawn tractors - and they are bad enough.
John :)
 
All usable wheels need balancing. It is possible to diy them with gear to allow the wheel to rotate freely, 10g weights and multiples are needed.
As for grot, post #51 shows an alloy wheel with a centre that needs cleaning.......a rotating wire brush on a drill is perfect.
To remove the tyre you need the rim to be secured, a centre pillar that goes through the wheel centre and a long smooth bar that you pull on to ease the tyre over the rim. Crowbars will tear the tyre and shred the rim.
I should say, I'd never attempt this with a car wheel, I limit my experience with lawn tractors - and they are bad enough.
John :)
What happens if unbalanced, will the wheel fall off? If not, I am not going to worry about it. The suspension should take care of the vibrations for an emergency drive to the local shop.

Lots of videos showing it being done without being secured. I believe I can do it too. I just finished a practice run and worked out what is needed. F-clamps on one end to keep the bead in the central cavity/groove. Then a couple of tyre iron flat bars on the opposite end. My main concern is killing the paint on the rim when levering. But adding a layer of rag appears effective in protecting the paint. So, it is well within my ability to do this safely for the wheel as well as for me.

For new comers: there is a metal ring around the bead that is smaller than the rim face circumference. Positioning the ring correctly is key part of mounting/dismounting the tyre. It doesn't take a lot of force at all. Just keep bead in groove at the opposite end of prying is all it takes. People in videos don't do this. They are stuck at keeping the bead in the groove at the starting position. This position must be adjusted to mirror the prying location.

For shop owners: I don't think it's a good idea to sand or grind away dirt if metal is not already exposed. Exposing the metal will bring corrosion. I would only use abrasive cleaning as the absolute last resort. I would be happy to live with any dirt that cannot be removed from mild cleaning if it doesn't cause leakage.
 
This should be the final spend on this project, excluding shorter valve stems I might decide to get. The levering capacity will be more than I need.

tyre-iron.jpg
 
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