I always drive over speed humps giving them the greatest respect. I slow to a crawl, I don't give a hoot if I slow traffic behind down. It's my springs and suspension, I doubt if I took speed humps at speed and sustained damage because of it, they would stop and offer help. No, if it causes them a problem...tough.

I've just bought a "Moog" lower arm for my ZT as the lower ball joint is knocking on the one on the car and has some play in it.

It has allegedly a 3 year warranty if fitted by a garage.
I'm not sure if I'll be fitting it myself yet as I'm having trouble with my back.
But, the quality looks pretty good. It's got some weight to it, unlike another make I had a look at and decided not to go with.

Like yourself, I slow down for speed humps, pot holes etc.
I've come to the conclusion that the state of the British roads is "sponsored" by manufactures of suspension components!

I'll keep you informed as to how it goes if either I fit, or I end up paying someone else to fit for me.

been heavey car and been rover set up bushes take a battering