Window shattered

Stone from a drive tire could cause it.

 

Absolutely.
Unless those drives are covered with fender guards it's plausible that a rock lodged in the tread and flung itself at high speed like a missile right at your own rear window.
Would they accuse your air line of breaking the windshield of the car behind you when they call in bc a rock flew off of the road beneath your drives?

 

I've had bunk windows shatter going down the road. In my case it was potholes.

 

Not only can a rock break the back window but they most definitely will break back windows. Most of our day cab petes had the back windows replaced with plexiglass. Some of our sleeper truck with back windows have been broken by rocks but not sure what they are doing to fix those.

 

Anytime we meet a bobtail on the haul road, we will almost come to a stop versus 20 mph when we meet a truck and trailer, Even in a bobtail has half fenders the back axle can and will throw gravel and ice chunks that will bust window,
lyndon has several daycab hosteling trucks that run around town, I an not sure why they do not put headache racks on all of them. The ones that do not have the headache racks have plywood for back windows. lol

 

when i worked at the former NEMF, a co-worker forgot to disconnect his air lines, and yup, they came flying into the back window....funny too, cuz the window was high up the back of the cab, you;d think they'd smash into the cab wall....

he never forgot to disconnect anymore after that.

 

The logging crew was driving their crummy on the log road one morning and the fuel nozzle came through the back window when they hit a large bump, I thought it was funny, and they were driving too fast. lol

 

Yes, tell them to quit being cheap and put fenders over tires.
If you’d have broken it with airline, it’d be stretched, along with other lines

 

turn your quarter fenders up some. keeps the rocks from hitting back cab