The laws apply from the state in which you live.
That's not actually true, but it's close enough to true. For example, in New York State, they can ticket you for tint that breaks their laws, unless you're from out of state, in which case they can *issue you a ticket in New York for violating New York law based on the fact that your windows are illegal in your home state*.
New York Consolidated Laws, Vehicle and Traffic Law - VAT § 250 | FindLaw
Many states have similar such statutes. In theory, though, their laws can say anything.
I've not been pulled over in my 16 years in CA, until I was on a roadtrip with 35% tint all the way around (70% is max legal in CA). I got pulled over in Utah, totally perplexed as to what he was stopping me for, until he started asking about the windows. I played dumb; Utah law allows down to 40% but they measured at 28% (tint+window is why it came out lower than 35). He asked what the law was in CA, and I said I was pretty sure it was legal and had never had an issue.
15 mins later, he came back with a WRITTEN WARNING for violating Utah tint laws. They have no such provision, from what I could tell, for out of state vehicles.
Of course, I've STILL never had an issue in CA.
I got a ticket for $450 in a rural Southern town when I went for BBQ but got out of the ticket with a letter from my ophthalmologist per state law. I had my front doors tinted to match the factory Chevy rear tint.
In a truck, then. Laws are different for the rear of trucks/SUVs, but most of them are tinted at 20%, so it's REALLY DARK; I'm not surprised you got popped for front sides that dark.
Here in California the legal limit of tint is 70% for drier and passenger front, the rest you could put on any shade you desire. Having said that per our customers request we do 35% all around including the front two doors and no one has been pulled over so far.
Agreed, it's unlikely to be an issue. I had a coworker with a blue STI with gold wheels and a loud stereo, he's the only person I know of who ever got a tint ticket in CA. Try not to break too many laws at the same time.
I would say yes, but anything is possible with CHP.
Dumping on the CHP is pretty much something you hear exclusively from folks who have only ever lived in CA and haven't seen what it's like in other states.