MCS Rear wiper - What's the size number and how to replace it?

is the driver side 18 and the passenger side 19? I install the passenger side 19 and it's 1 inch at the edge doesn't touch the windshield - should i changed it to 18? so both are 18s

thanks

dominos

 

When I replaced my fronts I went with two 18" Valeos from Tire Rack. nice winter blades, the PS doesn't touch on the outside edge curved part of the windshield, however. I'll put the OEs on in Spring.

Dealer just replaced my R wiper under warranty, it was worn. Dunno the part number or size, looks Mini-specific.

 

or should i switch so the driver side is 19 and the passenger is 18. what do you guys think/?

i bought TRIPLEDGE wipers