Originally Posted by ed073
not sure why it happens. roof racks that hold the whole bike like the pro ones are better....but you don;t need to be hearing that now.
BTW, when you say liek the pro ones, you mean like this Thule one?
http://www.thuleracks.com/thule/prod...t_id=8&sku=594
How about tow ball mounts? I rekon you snap your top tube going over a big bump with those things.