I don't see anything with a wally world bike I got one with over 5000 miles on it. It is a Avalon 7 speed comfort bike. Plus I got a huffy cran brook with a gas motor on that does 40 mph on straight aways. and I haven't had any problems with them . I got a next mtn bike I am transforming into my next touring bike . Now if I was gonna travel the world I would get a different bike but since im only gonna tour in the states this will be fine and all I done on that one was a sturdier wheel set for the mtn bike and put skinnier road tires with thorn proof tubes in it and put a rack and so far that's it.