Am I wrong for feeling this way?

I would normally agree to this, but it's at the same time a perfect example. If I got a ticket, and I could not afford it, I would still, morally, feel as though I should pay it back, or pay at as much as I can for it. Not my sister, nope she feels entitled to it. "bail me out, I don't have enough money". It bothers the f`uck out of me. But that isn't her nor there, I just feel like they'd make me pay it if it was me in her position.

Maybe they would have have done that, but you're the independent son they can count on, if you change and become as 'spoiled' as your sister, it would be 2x a burden to them. She will grow up and learn that her parents can't pay everything for her some day. I totally understand you though, my parents bought a car for my sister are paying the insurance and everything for her. You don't see me asking for a car though. I would be lying if I said I don't mind, but in the end I don't think I want to burden them more.

In my country parents are bound by the law to pay for their children until they're done with school. So if you've been paying all your bills and living expenses yourself as you said, you can very well try to discuss this with your father. I'd still try to cut the rent in half only maybe, at least for the beginning? So there won't be a big 500$ hole in the household budget all of a sudden.