pz900 195/50

[mawashi]

what should the tread direction be for pz900 195/50 when fitted to a car

[chas2008]

Directional tyres usually have either an arrow or symbol indicating the direction they are designed to run.

http://www.oponeo.co....cle/directional-tyres

[sunny-dave]

or the word 'OUTSIDE' on one side of the tyre

[sunny-dave]

(for asymmetric tread patterns rather than directional tyres)