My c30 is kind of funny I find the summer tires are however also totally at the end When starting it already pulls slightly to the right and it pulls itself into every driving groove. One notices with fast driving way nothing but with slow driving. I have the feeling I notice on the steering wheel every track groove Bzw bumps. The tires at the front are also different. The left has run relatively evenly. The right is one side blank. The tires are from January 07