I live right opposite these guys - granted they are noisy but if you ask them calmly, they always quiten down. I think they get treated very unfairly; they're young & a little irresponsible but I've never had any personal experience of them being malicious, hurtful or particularly offensive to live very close to. (I find the car tipping over accusation to these guys very difficult to believe). Chatting to them fairly and with respect, if they are offending you seems to work - I've seen them respond positively to concerns expressed to them in person before.