AO Platinum Member
Join Date: Feb 2002
Location: The land that Time forgot
Aye! The water gets in at the joint between the inner and outer wing at the back of the wheel arch. Then it creeps along that seam round the back of the wheel arch (inside the arch, where there it joins the boot floor ) and along the seam between the boot floor and the wheel well (above the rear subframe).
If you have bubbling arches, take the boot carpet out and see if the rust has penetrated into the boot.. not just at the joint described in the OP but also between the wheel well and the boot floor (essentially, the metal that makes up the wheel well rusts all along the joint with the boot floor but starting at the back).
If you stick your hand in the wheel arch, where the wheel well stops (above the subframe) you will be able to feel if the back is smooth (okay) or flakey (less okay).
Also check the front wheel arch by the sill..
No bullets for Chaingun..