i have the same problem. when i first got them they were real bad. but after driving on them ive found 3 have sealed up and now only one of the rears loses air.
ive got a compressor at home so before i drive it i throw air in them.
Yeah my front right looses pressure but sitting still for 3 weeks at a time doesn't help. I don't want to get the tires re fitted as I'm paranoid they might scratch the rims. Its not big deal to go servo. I'm generally getting fuel at same time lol
as cava said. when i got my tyres fitted i requested that a guy i went to high school with fit them as i knew him (and his work). not only that but i watched him fit the tyres to make sure.
not that i dont have faith but when you spend a few bucks on rims last thing you want is to get them marked.
last time i got tyres fitted to my sigs they chipped the lip.
I asked my mate to do them also for me. Hour later they were done. He took his time and then even washed them and tire shined them for me afterwards haha.
Being polished lip they get damaged in a heart beat.