why do the fastest bicycles have really thin tyres but the fastest cars have very wide tyres

Question

why do the fastest bicycles have really thin tyres but the fastest cars have very wide tyres

In: Engineering

Answer 1

Thin tyres equals less resistance on the road resulting in less effort required to peddle.

Thick tyres on a fast car does create more resistance but the advantage of having more surface area on the road allows for more grip and so the ability to put more power down before having wheel spin.