I used to have a decal with thin lines and never had a problem when rolling down. I just made sure it dried good before rolling the window down.

 

I have my boat name on the back, it's about 4inches tall and goes across the whole center. Same for my dads T and no problems at all. His has been on for 3months and mine just over a month

 

Ive had a business logo back there for around 7 months now, no issues yet

 

i have an 8 inch bass vinyl on my windshield. therefore taking a beating from my wipers, i was very paranoid in the beginning, but once they stick on there really well after a while. your good

 

I have a Monster Energy decal going from the top to the bottom of the rear center window and roll up and down all the time and have it on there for about a year or so and no issues.