Ksyrium ES wheels have no holes on exterior (tube-side) rim surface , so no need for tape. If Elite's (or any other clincher rims) have holes, they have to be covered; otherwise you WILL have a blowout eventually as pressure in tube will force tube surface down into hole and hole edge will wear hole in tube. Happened to me this past summer; had blowout on inner surface of tube. I could see all the little round sots where each nipple hole was wearing tube away. I had lightweight nylon tape (came w/ wheel) which wore out--replaced with Velox cloth. High pressure (10 bar) in tyre probably contributed to problem, but it was going to happen eventually.