Smooth is better unless it's raining. And even then, the deep groves are only needed when it's very wet. Car tyres have to cover the 100% case of water.
The tires above look like they are just extremely over used, which has its own danger, namely failing.
yeah no way you can sand it to this level
Not the rain tires though
The drivers are pros though and there's every available safety measure built in the car, the clothing, the track, etc.
No they just use different tyres for different conditions
ackschually, F1 cars don't have traction control, stability control or even ABS, so they're really fricking hard to drive in the best of circumstances, nevermind in the rain on slicks. Now GT3 is a class where pro drivers drive some really sick cars with all the electronics
Tires almost as smooth as his brain
No ridges or lumps, valleys or bumps!