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The rim's sleeve joint, on its own, won't be completely airtight under pressure (being reliant on sealant).
As wide a tape as you can get away with while still being able to get the tyres on, in order to minimise the size of the hole/crack at the joint that the sealant has to fill.
If the rim's 22mm wide (externally), 21mm sounds about right, after the central channel is accounted for. -
I'm not going to run them tubless to begin with, but may look at it later down the line.
Just fit the tubeless tape now, it won't mind being used with a tube.
Lukas
gbj_tester
@Scrabble
Right, back to wheel building -
Quick question on tape. I've got a pair of R460's I've just built up. 18mm internal width. I'm not going to run them tubless to begin with, but may look at it later down the line.
The recommended tubeless tape is 21mm wide. I beleive this accounts for the central channel of the rim.
Should I therefore use 21mm normal rim tape or can I use narrower?
Is there a recommended rim tape?