I have 4 Landsails on my S211 220 cdi. I dont drive particularly fast or do a high Mileage but have done about 18k on them in about 3 years and still loads of tread left. Cannot fault them. Never lost the back end or experienced understeer, no problems in the wet either. Obviously If I drove an E55 I'd think twice but for my needs I'll definitely consider them again.