@Raggyman
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Are there regulations in place that define the minium tread on aircraft tyres? I say this, I know how difficult it is to control a car that has very little tread, let alone an aircraft.
No, cause tread wouldn't help. Aeroplanes are touching down with more than 250 km/h. This means you will have aquaplaning anyway.
Ah ok, interesting.. but would it not matter latter on down the track when your speed had decreased? Or do aircraft tyres pretty much aquaplane anyhow no matter how fast you are going?