Tire Pressure

I bought new rubber stemmed tubes and rim liners in 2017 from Mike's and installed them in 2019 with new Universal 21" tires. The tire pressure remains very constant in all tires, and any changes I think are due to the summer/winter temperature extremes here. If you do want new tubes, maybe contact Erich Lindeman at Mike's and see if they still are using the same tube provider now. I sure like my tubes.
 
I've had problems will Michelin steel stem tubes. Rubber stem types may be better but they don't work on my drop center HD wheels
 
We put new Goodyear Diamond Treads on the Roadster a few years ago, with Walt Bratton's new inner tubes. I believe the tubes were made of virgin rubber in a plant in Vietnam. Of course Bratton's is gone now.
Kept the rubber stems. The tires all hold air real well maybe each one will lose 2 pounds over the course of 5-6 months.

I'm happy with that:)
 
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