Jacking up a lowered car can be a pain since there is no room to get a hydraulic jack under the crossmember/diff.

My 90 NOK solution.

200mm wide 50mm thick .  First section 450mm and the second section 150mm.  This way it will clear the wind deflectors that are about 50mm off ground.

This have already saved me a lot of time as I have been messing with the brakes and switched wheels a lot lately.