What nobody has said is that with race cars, they use slick tires to increase the amount of power they can use before the tire slips. A normal road car, when driven safely, should only ever experience wheel slipping in one situation, an emergency stop.
I have only once in my 15 years of driving (approx 200,000 miles) needed more grip and that was due to driver error when I was new but needed grooved tires probably every time I have driven.
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