Well,
What's "rusty"
It has some rust, I live in Toronto, Canada, so they salt the roads here.
It has about 70,000kms and driven in the snow for about 3mths of the year (no serious snow..)
I actually don't want the hassle of having to fix it if it does break...so if there's more of a chance that it will break then I'd rather not put the bar on....I dunno..