>>53071
Had the same thing, although the air was leaking far slower.
>wanna go for a ride
>grab the bike
>front is completely flat
>FUCK
>pump it up and wait 5 minutes
>holds air very well, can't tell if any leaked or not
>go for a ride
>pls don't flat on me midway
>it didn't
>put the bike in the usual spot
>flat again next morning
Ended up replacing the tube, guess the valve had it.