Re: Radial tubes
After 35 years in the commercial tire business, I’ll offer some input.
Radial use tubes have the following improvements over bias use tubes.
Heavier gauge rubber.
Larger splice overlaps where the body sections are joined.
Larger and thicker valve stem base.
All features designed to deal with the stress on the tube from the increased flexing of the radial tire.
Unfortunately there are no US tire manufacturers still in the tube business.
Michelin made the best in my opinion and experience.
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