I've actually been running a set of Saguaro white walls on my dj bike for a while now and in Oklahoma, the red dirt stains just about everything. However, all you have to do is get a little soapy water, Windex, Simple Green, whatever and they're fine. So no, they don't turn into "dirty brown walls after a few rides." Sure it's a little more maintenance than a typical black side wall, but how many times have you seen someone riding white walls on their bike?