If I was on the highway most of the time , I'd have a glass windshield with real wipers. But I live and work on a farm (cattle) and seldom go over 35 maybe 40 for a very short time as I go to the next pasture down the country blacktop. I have a little vibration occasionally which could be fixed with additional stick on sealant strips. ( the kind of dense foam that you pull the seal of of one side and attach) A small short piece comes with the windshield. There are several decent water shedding products made for plastic windshields such as Plexus . Also only wipe off the windshield after rinsing it and in straight motions never circular.