Originally Posted by NRG
Same with mine, 20" Dunlops 17k miles the rears are perfect still 50% good. The left front is bald outside, right front is ok, both have less then 30% left in them. Had to put a new rubber set all 4, did an alignment before putting new ones on, dealer said it was bad. Car drove straight, with a slight hint to the left barely noticeable.
All X5's pull left, the lefthand front wheel is set back 5mm futher than the righthand side wheel, this becuase of the camber of the roads and the X5 is really designed as a lefthand drive vehicle to suit both Europe & the US.
So you can see what happens when you make it a righthand drive and drive it on the opposite side of the road that has lefthand camber. To overcome the pulling left you need a castor kit to pull the lefthand wheel forward and pull the righthand wheel back 5mm.