Most after market rims I have seen are crap and are made of butter! Other than not being strong enough, the other typical problems I have seen are that they don't actually fit the hub properly and so cause big problems with the stability at speed.
IMO, stick with either 130 or Wolf rims.
M
PS... Get yourself another tyre guy. ;)
PPS... Or if you really want to p1ss him off, get him to fit a set of Michelin XZLs onto Wolf rims. :D

