On the N375 near the Ramspol bridge you are driving at 90 km/h, the permitted speed, in heavy rain. Your car has wide tyres that are badly worn: only 1 mm of tread is left. Are you at risk of aquaplaning?
Yes, the thin tread and the wide tyres increase the risk, even at this speed
No, wide tyres have more contact with the road and make up for the thin tread
No, as long as you do not drive faster than permitted, your tyres keep enough grip
Explanation
False — speed is not the only factor. If the tread of your tyres cannot drain the water, the chance of aquaplaning is greater, even if you keep to the permitted speed (Book p.189).