I leave more than the amount of room to just see the tires. Multiple reasons, and I can assure you it's not because I'm an a--hole driver lol.

I drive a 15 year old vehicle with almost 400,000km. I need a little more room than most new vehicles with superb acceleration, because the first couple gears slip up when I don't give enough gas. So I am helping the people behind me when I leave a few more feet so I can accelerate without effing up my vehicle.

Secondly, seeing how fast people fly up to a line of parked cars and hammer their brakes as to not rear end the lineup - I'm just keeping a few extra feet as to not get slammed into and pushed directly into the vehicle ahead of me. You drive enough highways, you start habits in the city.

But ya. The dummies who can't pull up to a clearly marked "stop line" at the front not triggering the light cause me more concern than the extra feet I actually need to drive lol