Oh my god. I would be terrified to post some of the ridiculous things ive seen here.
Tires dont help with stopping distance??
Why not ask if you dont know? No one is going to flame you for asking, but to make such an outrageous statement PROVES you have no knowledge on cars, aside from reading brochures.
Stopping distance requires FRICTION! It begins with the pad touching the rotor, and ends with the tires against the road.
ABS and Brake assist are meant to maximize all available friction. ABS in particular helps you when braking force of the pad and rotor OVERCOMES THE FRICTION OF THE TIRE AGAINST THE ASPHALT! If you were to drive with racing slicks and get them to operating temp, you might not even be able to tap into the ABS at city speeds.
Brake assist anticipates a panic stop by measuring how quickly you stab the brake pedal in the first inch or so, and applies the brakes 100% before you get to the end of pedal travel, saving a few feet.
Me? I drive my boxster in all seasons, in all weather, and I take tires very seriously.
I use summer tires with a low treadwear rating from April until November
I use racing slicks at the track and autoX
I use snow tires from December through March.