BMW E39 Tourer - Saggy bottom !
 

Anyone recommend a BMW specialist who can take a look at the rear suspension on a 1999 5-series Tourer?

It's self levelling and overnight deflates so the wheel arches are over the top of the tyres, as soon as you unlock the car you can hear it pumping up and within a minute it's back to normal.

Car seems to drive fine.

Located in the Croydon area daytime and Crystal Palace at night !

Cheers.:)