As those vipers originally suplied with Logan (length is, if I am correct, 50 cm) are of not so impressive quality and should be replaced with something better, question is should they be replaced with 48 or 51 cm (Valeo doesn't have 50 cm, and local supertmarket today has very good "special" price for Valeo vipers...). I guess that both dimension would fit, and longer are in general better ... but, better to ask in advance

I am using 53 cm wipers, also used a set of 55/50 cm.

Take the 51cm Valeo wipers.

By the way: the original wipers are also Valeo.

P.S. If you want to get rid of that triangle that forms in the middle of your windscreen, take the 60cm (for driver) and 45cm (for passenger).
It's a long discussion on that in the romanian section.
I'm using a 65cm Champion for driver and the original 50cm for passenger, but the wiper doesn't press on the windscreen as much as the original one because it's longer. I don't have any problem with that, but I don't know about you.

Those Valeo from supermarket look much better (and rubber and metal frame for the viper). I don't know if they are actually better, but, as I said, at least they look better

And the “special” price is…

4 Euros (320 dinars). But they are gone now... Sold out!