Originally Posted by
tjspiel
Check your rim tape.
Summer 2010. 20 year old Centurion Sport DLX. Cost to have bike shop re lube the bike and get it ready-$200. First ride...flat. Changed tube, got home. Next day, tube flat. Ended up going to thru 4 tubes. Finally figured out it was the rim tape. Replaced with plastic rim tape. Finally upgraded to rubber rim tape. No further concerns.