I've been reading about the mushrooming on strut towers that can occur if/when I hit a pot-hole. This really concerns me as I've just ordered an R56 with Sport Package that comes with sport suspension and 17" wheels. The roads in Toronto are getting worse each year and frankly I have a feeling that sooner or later my car will show signs of this mushrooming.

I've noticed that there are braces that can be ordered and installed on the strut towers to reinforce them. Is this recommended for installation ASAP after I take delivery or can these be installed if/when the damage has been done (as a repair)?

The reviews on one of the products featured in NAM indicates that some of the insulation has to be removed from the underside of the bonnet to prevent it from bulging. Is the case for all such products or do some have a lower profile than others? If so, are they any weaker?

Your thoughts...?