Originally Posted by slopvehicle
electrical tape's adhesive gets gooey when hot-- even the marginal summer heat of the midwest can do this-- and then your protective layer o' tape starts getting pushed around. This can expose your tubes to the sharp nasty stuff in there. Go plunk down a couple bucks on some real cloth tape!
Also, electrical tape is very elastic; I noticed this when I fixed a flat last weekend, and looked at how my electrical tape rim strips were holding up. Every single crossing of the spoke holes had a LARGE impression in it. This weekend (thanks rain!) I'll be taking my tires and tubes off my bikes and putting on some medical tape (bike shop recommended).