They have the fat tires because they're purposefully melting tire rubber into the pavement for a bit more traction. Rubber tires have maximum grip at 7% slip; j

They have the fat tires because they're purposefully melting tire rubber into the pavement for a bit more traction. Rubber tires have maximum grip at 7% slip; just about the only material where sliding friction is greater than static friction. Road-going tires won't get hot enough unless you're skidding far below 7% slip.