Universal Roof Racks from Walmart?

[addicted2sp33d]

Hey Guys,

Wondering if anyone has experience with those Universal Roof Racks from Wally Mart: http://www.walmart.com/ip/29390001

The bars and the towers look pretty solid - my concern is with the way they mount to the car. They're held down by some straps that come down from the towers, through window/door frame, and through the cabin.

I can tighten the hell out of the straps, but that won't do any good if the feet slide or the bars are crap.

Any commentary on the topic would be greatly appreciated!