A mechanic advised me exactly like what CSP said, there will be some crack (somewhere where metal hits metal) if you hit a big hole.

Anyway, all the rattling noise at the rear of my coupe disappeared after i installed a fresh pair of rear bumpstops

I am very happy with the cushy ride over uneven surface now
Cheers

I have now cut all four bumpstops to half height, as the rears also were very close. I have Eibach's (-30mm or so they say, it seems like 40 to me). Bilstein B6 shocks.

Result: much smoother ride and a little lower front end.

This MUST be included in the guides, or people will miss this..

Yes shortening the bumpstop is essential with any lowered suspension setup. Riding on bumpstops is actually quite comfy but will result it quite a choppy ride as you're not utilizing the dampers properly.

Will look into the guides Per and amend accordingly. Thanks.

This thread has been awesome to read as I have been really disappointed with the ride of my car after fitting billies and eibachs especially over high speed bumps but from reading this it must be because the front is on the bump stops all the time thus providing no damping. I can't wait to go and cut my bump stops down now :-). Thanks guys.

I am in the middle of lowering my car, so also very interested in this thread.
The rear stops had come loose, so are now off the car completely.

My question is how much to take off the front stops to avoid the choppy ride Kelv mentions?

Difficult one to say Iain. It really depends on the condition of your springs (hence how much it would sag) and also the type of bumpstops you would be using. I would chop a portion at a time and see how it sits from there. I chopped a fair bit off mine and although this would still offer some protection to the struts, the reduction in material would result in a harsher bump when the strut tries to bottom out.

Cheers Kelv. My thinking is to take the 35mm that the springs will drop the car by off. Surely that would even things out. However you've got me thinking now, as what you say about the reduction and harshness I hadn't even considered.

Perhaps I'll do as you say and cut less first, then cut again if required. Bear in mind I won't have the option of a road test on these yet, as the car will remain SORN until I've finished all the work.

I cut the first bulb off;

[ ]
( )
( ) <- this one!

Did the trick on mine, I have the 30mm Eibach springs.

Cheers Per,

Just removed the struts today, and having inspected the bump stops came to the conclusion that removal of 35mm may be a bit harsh. This would leave precious little material.
If I remove the first bulb from the front bump stop though, this will remove the part of the stop that holds the attached dust sleeve in place.
I have tried the sleeve on the second bulb, and it appears to hold, but as this is not shaped to fit the sleeve correctly I am unsure if it will become loose or not over time.
Have you had any problems with yours?

Yeah exactly, I just pulled the sleeve over the next bulb!
They seem identical to me and it does still hold the dust-sleeve.

Excellent! Thanks for the confirmation. I'll cut these down in the morning, and should have them on the car by tomorrow night.
Many thanks.