Originally Posted By: GMBoy
There is a reason that a manfacturer specs a certain size wiper and it may or may not have to do with safety. But, if you find a larger (never go smaller) wiper that works and conforms to your windshield the whole wipe arc, than you are probably ok. Me, personally, I'd stay with the OEM spec size.
I used to go bigger on every car I bought, now that factory blades give better coverage I don't bother.
I did have a problem with one out of many vehicles. My 72 Dodge Pickup wiper motor with oversized blades would stall with good blade on dry glass. The wiper motor quit after a few years. I replaced the brushes and lightly turned the armature on a lathe, it worked better than new after that.