The lower the tire pressure, the larger the contact-patch the tire has with the ground. ( Ever hear people say to keep your tires aired-up properly in order to get the best gas mileage? ) That's why. Everyday driving doesn't require that much contact with the road, and can actually prematurely wear the tire.
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Yes it's modded, No it's not done, Yes it's fast, and no you can't drive it. **On a good day, my car has
two blowers.
Your car must be fast, you were haulin' ass when I passed you in my 4-door Buick.