sars said:------ the downside is that they won't last long
My Discovery 3 was fitted with Pirelli std rubber when it left the showroom - they lasted until 20k when they were goosed!
I fitted Vredestein wintracs at that point and 21k miles later they still look good - I would guess about 5-6mm tread depth.
Like most, I had the fear af rapid wear rates but I needn't have worried.
(That's with 2900kg of car depending on them)