drca Posted September 30, 2018 Report Share Posted September 30, 2018 I have a 2013 Gas Gas TXT Pro Racing with the flanged rear tubeless rim. I change my rear tire regularly but it seems that I am always in a hurry and never take the time to correctly inspect my rim when I do it. Well I have been having a slow pressure leak in the rear recently that became worse yesterday so I took the rear wheel off the bike and hunted for air leak with my bottle of soapy water. Turned out that there was some small rocks embedded between the rim and tire and most of the air was coming through there. But there is also a very small leak at the valve level (at the interface rim / valve). Is the tubeless valve on these rims the same as the automotive type or are they special trials rim version? So I took the tire off the rim and decided to clean up the tire were it makes contact with the rim as well as the rim. Well, I am sorry I didn't take photos of the rim before but after I cleaned it up with a wire wheel and sanding pad discs, here is what I had left: There are some pretty bad corrosion with flakes of alloy coming off... Is that common? What can cause that? Thanks. DC Quote Link to comment Share on other sites More sharing options...
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