Poll: Mushrooming/strut mount failure data collection

[caminifan]

I have been wondering about a few things that might cause (or contribute to) the strut tower mushrooming - lowered springs vs. 17 and 18 inch wheels (with the corresponding reduced tire sidewall). So, for those of you that have experienced non-catastrophic mushrooming and/or strut mount failure (failure that was not due to things like hitting a pothole; but occurred over time), please post what size wheel and tire (also include whether you had runflat tires) you were running during the period immediately before the mushrooming and/or strut mount failure was noticed. Also, please post whether you have the stock springs or lowering (and presumably progressive rate) springs were installed on the car.

Thanks in advance to all who post.

Summary from posted information:

17 inch wheels + runflat tires (presumably 205/45-17s) + stock suspension:.........1