Tires are now Pirelli Ice Zero instead of Goodyear Ultra Grip Extreme (three-season tires). When compared to extreme sports, Pirelli's great grip on ice, predictable corner entry, and plushness are like heaven and earth. After the first season (a lot of driving on asphalt), the spikes became smoother, but not one flew out (the driving style is not gentle). Almost no slipping occurs between the start and the gas and forward (no aiding systems). I feel strong enough to tackle the hill now. This is a great rubber—very moderate. Excellent cost-effectiveness. (for negatives, see below).