
Not seen or heard of anything like that on an XT?
The casting on an XT is much more beefy at that point. Also I think the BMW forks are only 41mm too?
However, it is not uncommon of for over-tightened pinch bolts to cause the axle mounting hole to crack on the right hand leg on XTs. They don't need tightening up nearly as much as a lot of people think!