I am considering installing lapstraps in the back of my 110 ( to stop the kids hitting me on the back of the head if I brake hard).
The kits available, provide an 80mm steel square plate to act as a load-spreader behind the aluminium of the wheel arch.
Steel and ali' next to each other under the wheel arch, combined with mud and salty roads? They will soon become a one-piece item.
Does anyone have any better ideas?