Performance suspension to raise the car?

[Elberto]

Having a major problem with my Alpina Roadster S. The council has put up speed bumps everywhere where I live and I cannot clear them without scraping the car. Is there suspension I could get to raise the ride height of the car and still keep good handling?

[flemke]

The law requires a speed hump to be no more than 100mm higher than the road surface before and after it. Most cars will clear this. Councils have been known to have (illegally) violated this rule. Is that possible in your case?
Failing that, have you tried taking the speed humps at an angle? It makes a big difference to a car's ability to clear them. By taking an angle, I've negotiated numerous humps in cars that would not clear them straight-on.

[mat205125]

I've heard about the 100mm law before, however would be interested to know whether there is an accompanying "ramp angle" limit too. I live near Swindon, and there have been a lot of speed humps for years, however more recently they have begun bolting down those huge pre-fab rubber bumps that are a lot harsher/steeper than traditional styles.

[Elberto]

I think I need to sneak out with the ruler and see if they have made them right.

Don't really want to be seen doing this though.

[flemke]

mat205125 said:

I've heard about the 100mm law before, however would be interested to know whether there is an accompanying "ramp angle" limit too. I live near Swindon, and there have been a lot of speed humps for years, however more recently they have begun bolting down those huge pre-fab rubber bumps that are a lot harsher/steeper than traditional styles.

Seek and ye shall find.
Max ramp angle 1-in-10.

http://www.bathnes.gov.uk/BathNES/transportandstre...