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Ok to put new tubeless rim tape over old rim tape?

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Ok to put new tubeless rim tape over old rim tape?

Old 05-02-21, 04:05 AM
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kosmo886
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Ok to put new tubeless rim tape over old rim tape?

I just got a slightly used set of tubeless wheels that has rim tape installed. It's probably fine, but out of an abundance of caution I want to freshen up the rim tape. Do I need to remove what is already there or can I just clean the existing tape and throw a new layer on top? Are there any issues or consideration in doing this?
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Old 05-02-21, 04:28 AM
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When I did the conversion on my MTB the stock tubeless rim tape was leaking. I put a strip of Gorilla tape over it and it's good to go. It actually helped me get air in the tire and set the beads because the bead pressed up against the extra thickness of the tape for a better seal, if that makes sense.
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Old 05-02-21, 04:33 AM
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The only tubeless tires I know anything about are on motorcycles. Adding material/height to the center channel of a rim can make mounting/de-mounting the tire more difficult.
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Old 05-02-21, 06:23 AM
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I remove the old tape which gives me a chance to make sure the is no water in the rim and to clean the rim with alcohol so the new tape sticks well.
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Old 05-02-21, 07:21 AM
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kosmo886
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Originally Posted by MattTheHat View Post
I remove the old tape which gives me a chance to make sure the is no water in the rim and to clean the rim with alcohol so the new tape sticks well.
what’s the best way to remove old tape?
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Old 05-02-21, 07:40 AM
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It'll be more trouble to half-ass it, so whole-ass it and do the job right - remove the tape.

Originally Posted by kosmo886 View Post
what’s the best way to remove old tape?
Pull it off. You might need to clean up some sealant residue, but a damp paper towel should do.
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Old 05-02-21, 12:44 PM
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Originally Posted by WhyFi View Post
It'll be more trouble to half-ass it, so whole-ass it and do the job right - remove the tape.

Pull it off. You might need to clean up some sealant residue, but a damp paper towel should do.
This, exactly this. Then get a clean rag and some isopropyl alcohol, and get the rim good and cleaned up before putting the new tape on...I cannot reiterate how important this is. A clean rim is much less trouble to work with when setting up a tubeless tire. A little extra work at the outset will give you months of trouble free use.
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Old 05-02-21, 01:25 PM
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Originally Posted by kosmo886 View Post
what’s the best way to remove old tape?
IME something like Goof Off. Acetone and mineral spirits evaporate fast and don't so as much dissolving.

edit: pull the tape off and use Goof Off to clean up the residue.
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Old 05-02-21, 01:30 PM
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That's really the key...get the left over adhesive off the rim. Period. You want that rim bed surface to be clean, like your legs right after a proper shave.
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Old 05-02-21, 02:45 PM
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Originally Posted by kosmo886 View Post
what’s the best way to remove old tape?
I usually just use my fingers. Seems to pull off readily and usually without residue. Then I wipe the rim down with alcohol and paper towels.
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Old 05-02-21, 09:48 PM
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Just adding my $0.05. Pull the old tape. That way if you have any issues down the line you won't be questioning if it's the old tape, the new tape, or something in between.
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Old 05-03-21, 06:03 AM
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Originally Posted by NoWhammies View Post
Just adding my $0.05. Pull the old tape. That way if you have any issues down the line you won't be questioning if it's the old tape, the new tape, or something in between.
To literally ensure that there are "NoWhammies"
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Old 05-03-21, 08:15 PM
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Are we still talking about the Mavic Cosmic Pro's. Pull off the old tape. Start fresh, do it right. If you mess it up, do it again.

You want the tape to be clean and to seal.
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