I've read this entire thread, as I have a very similar problem. My car's a P5 lowered on H&R springs with aftermarket wheels. When I'm driving alone or with just one passenger I pretty much never have problems, but with a decent load I got the tire wall hitting the rear fender. I've been looking for an inexpensive alternative to putting the stock springs back in, so I was excited to read about the rubbers ... but obviously disappointed to find out that they ended up blowing the springs. My question is this, given that I'm driving on my own most of the time, would I be okay with the rubbers? I thought that the springs wouldn't see so much strain cause most of the time I don't have the added weight.