Dave said:False floor IMHO.
dyp said:is the spare wheel located in the boot or underneath??
they way i got fixed this problem was to cut an MDF sheet to the size of the boot and then covered that in fabric. i then took the sub out of the box and screwed through the bottom of the sub box into the MDF sheet. then replaced the sub.
with the MK1 the spare wheel is located underneath so i had to cut a bit out of the sheet so i could get to the spare wheel carrier release hook