[Priit Peljo]

taga sooned nõnda <<<<<<<<<<<<< (vee ärajuhtimine garanteeritud) ees aga nõnda >>>>>>>>>>>>> ( vee ärajuhtimist ei toimu, nagu vesiratas )

Sõber vastas mulle nii:
Ma võin sulle veel ühe pähkli anda - minu võrril on mustrid just vastupidi - et taga nagu ei juhiks vett aga ees juhib.
Kui oma doktoritööga valmis saad, siis anna mullegi teada, mis ja miks on õige vastus! )))))))

Lisatud:
Sain ka sellise vastuse -
The reason for the different tread patterns is because a motorcycle's front tire undergoes completely different stresses than the rear tire, unlike an automobile tire tread that is unidirectional with a flat profile, and thus doesn't have to be designed differently.

Not really sure how you think that a tread pattern can "push water towards the center of the tire"; water will always look for an escape path no matter which direction the tread sipes are. Needless to say, the tire manufacturer engineers would not design a tire that would cause hydroplaning. All tires undergo rigorous testing in wet conditions (Michelins included, which I've ridden on in the wet with no ill effects).