so i noticed that the back tire on my 300 dollar entry level hybrid (that's what the lbs called it) was rubbing against the brake pad on every revolution. took it in to the lbs where i bought the bike 2 weeks ago and had the back wheel trued. i think he tinkered with 2 spokes with his wrench.
seemed easy enough. the back wheel no longer touched the brake pad.
biked for about 30 miles in manhattan, mostly on the west side bike path, but i did go over a few curbs. the back tire is rubbing against the brake pad again. i am about 165 pounds, and the rims are alex dm18's, the ones that came with the bike. should i just keep taking the bike in to the lbs to get the back tire trued on a regular basis? should i just get a new back wheel? suggestions? should i be annoyed with the lbs at all for selling me a wheel that seems flimsy? is there no rim in the world that can routinely endure an urban curb or two? is the problem that there no such thing as a round wheel, the same way that there is no mint baseball card, and the real explanation for my problem is the way the rear brake pads are attached to the frame?
sincerest apologies for momentarily dumbing down the board. i appreciate the newbie links that all you kind folks have brought to my attention.