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Slow Rear Tire Leak

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The Michelin rear tire on my Montesa 315 leaks about 1/4 lb per day, but I cannot find a leak. Used soap and submerged the tire in water. Still no luck. Is this normal for trials tires? Do the tires or rims just out-gas the air gradually?

The Michelin rear tire on my Montesa 315 leaks about 1/4 lb per day, but I cannot find a leak. Used soap and submerged the tire in water. Still no luck. Is this normal for trials tires? Do the tires or rims just out-gas the air gradually?

Could be the valve, or maybe it's not beaded entirely properly?

I just fixed my slow leak in rear tire/wheel. Air was leaking thru the spoke nipples because of the rim sealing band. Remove the tire, remove the rim seal.

Clean with hot soapy water and replace. The valve stem is tricky.

P.S.

I used soapy water to find the leaky spokes.

Edited by trialsmm

What tire pressure did you use for the soap and water method? I found the leaks are easier to find if the tire is pumped up to high pressures.

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