Advice: managers consistently late, and it prevents me from clocking in on time

I work retail. Opening shifts start one hour before we open the store so we can clean and get everything ready for the day. I am an extremely punctual person, and I have never been late to one of these opening shifts. My managers, however, the ones with the keys to open the doors, are never on time. They’ve been anywhere from 7-30 min late, and I’d say the average is about 15 min. I cannot clock in until I’m inside and can use the system inside. I know this isn’t a lot, I’m only really losing $3-4, but it drives me insane. Is this worth talking to them about? What do I do?