what is the use of torque
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But this torque can tell you a lot about how fast the car can accelerate. Let's turn it into a physics problem. We'll assume that this "500 Newton-meters" is an actual, legit value for how much torque the tires experience. We can estimate that the mass of a typical car is about 1500 kg, and that the typical distance between the center of mass of the car and the wheel's rotational axis is about 20 cm; this gives us a moment of inertia for the car of 60 kg m^2. The car's wheel size plus the sidewall radius of the tire is about 20", or 51 cm.