I did not even know i had a feature for tilt till i finally had a chance to go through the EVIC system,,, i tried it some today,,it is weird for sure but then again,,,how about those out side convex mirrors--that's the weirdest of any thing besides driving a 1 ton down our local hwy's and the ride being as nice as our Camry.
I do a lot of goose neck flat bed towing and just got the new truck but the tractor is in shop and when it gets back i will be able to remove the canopy to start driving the pair,,, then i will know for sure as to backing,,, right now i think the mirrors tilt down just a little to far, i am going to try and adjust them up some and then back up to see where they tilt to, if it is a set position for tilt, ill just have to figure something out besides turning the feature off.