Over the years I've sold and installed a ton of M7 Strut plates for the R50,R53. But I also have people always asking about the amount of threads on the nuts being enough. I've always said it was plenty since I've seen these plates keep cars from getting mushroomed, even on my own car. So when I recently bought a wrecked MCS to part out, I found it had a set of M7 SRPs and the pictures below will show the threads are fine, don't be concerned if they can take this, your bumps in the road are nothing.

 

Yeah, with M7 plates, camber plates, and polyurethane bushings I can pretty much run over anything. I've hit huge potholes on some gravel roads and the car was fine.

 

Don't be too confident. I run the Megan coilovers on 16x7.5 wheels and have cracked a passenger side camber plate in 2 pieces, mushroomed my strut tower, and mushroomed the M7 strut plate. All from daily driving.

But I still think the M7 srp's are a great product and one of the few mods that just about all Mini owners should consider.

 

Well, I have stock springs and dampers plus 15" rims. So there is more give. I'm still careful to avoid as much as I can though.

 

I use the M7 plates on the race car. The video below shows the hit and some of the damage done. Also broke rear control arm. But the plates remained in perfect shap as was the tower.

http://www.vimeo.com/7031989