I second having the tape slightly wider (1-2 mm) than the rim as the tire bead helps really stick the tape down as its aired up. I only use rubbing alcohol and and old sock to get the rim bed somewhat clean it does not have to be perfect. You also should not be stretching it until you bleed, the tape should be taut but not stretched. Apply on a truing stand if you have one.
Last edited by: Hollytron on Sept. 14, 2021, 8:17 p.m., edited 1 time in total.