it's not an acknowledged common pattern failure in their technical bulletins, that's the point in letting renault know via an owners group of a common failure pattern that they haven't picked up on yet. it really doesn't cost anything for renault to inform the manufacturer of the joint that the boot's split and rendered the ball joint humped on what appears to be many a 133. but an interesting point to throw into the fold is that i'm 2008 / 50,000miles in and still on factory ball joints and boots to the best of my knowledge, i at least can confirm i have done 28,000miles on them from when i bought the car and they are still in tip top shape after having the backside booted out of it daily. wood has been touched firmly