We have taken my daughters 2014 Nissan Altima to you to have back passenger side tire repaired three times now to have a slow leak repaired but the repair only last's a week, what can be done about this.

I would just buy a new tire

This is a public forum. You are not contacting Big O Tires through here. If you want to talk to them I'd go see them or call them. My experience with this Big O location has been great. But every situation is different. :)

I'm not sure. But tire may not be sealing around the rim or there may be a leak in the side wall that can't be fixed. But how many miles are on those tires how long has been that those tires have been replaced? Your Nissan is 5 years old.

Second opinion...

Most likely its seeping around the rim. May need to be cleaned

Your wheel may need to be looked at or replaced but I'm not the business sorry.