Mine lasted awhile without upgrading them. Finally it gave way well pulling into a uneven parking lot. Than I heard a sudden "thud" sound. Looked under after I parked and didnt see anything because it was now even (when parked). Drove a little more and you hear the bar "clanking" around. It could get you stuck somewhere if it gives way. It did to me. I was 2 hours away from home.
