I know RAVE specifies 22" front & 18" rear, but what size do others use on their P38's ? Fronts on mine are currently (worn out) 22", but left one is clearly too long.
I'm considering using 20" & 21" on front, and 20" on rear.
I use 550mm (driver) and a 530mm for the passenger side. If they are too long on the passenger side the blade overhangs the screen edge and deforms the blade over time
I've been debating replacing the passenger arm with another driver arm so it is shorter. When I fit a short blade to not overlap the edge or the screen it leaves me with a huge unswept area.
I got 22"ones cheep on the net, not the flat blade style ones lots of little arms old school ones ,not so keen on them ...but i was surprised when they fitted the screen on the passenger side still look crap though..