BMW E32 7 series Tires

I bought a full set of these for my E32 730i to replace the cocktail of GT radial, Uniroyal Rallye 550s and Champiro tires I bought it on. There was an immediate improvement as to be expected. The car rode better and felt more surefooted in the wet and dry. I never had an aquaplaning incident on them either. When I sold the car, 6000 miles later, the fronts and rears were down to about 4mm, the wear rate seemed quite good despite the car having been hustled around b-roads and oversteered on occasion. They suit a heavy car well but cannot comment on how they perform at -3mm.