I thought it could have been the parking brake. How would i be able to fix that though? Is there an easy way to un-stick it? Or perhaps loosen it up a little? I just re-checked the tire pressure and it's near max. But that's the only thing I think it could be. Thanks for the feedback.

Oh yeah. One more thing. Is there a proper way to use a parking brake? Whenever somebody drives my car they "ccccrrrrrrrrrrkkkkkkkkk!" yank it up all the way. Then I put it back down. When I use it I have the car in 1st and only pull it up 1 click on flat ground, 2 clicks on a medium slope, and 3 clicks on a heavy slope. It engages perfectly there. But are there things you do and don't want to do with a parking brake?

 

mine almost always rolls, so i have to put it in first, but sometimes it stays solid (very rear tho)

 

you have the problem I could have used a while ago...my car went on a drive without me...but nothing was torn up, even though it missed a VERY good chance to. I am going to say the e-break is tight. (any questions about that are answered here) https://mustangforums.com/forum/show...=458376&page=2

 

Sometimes my car wouldn't roll if the slope wasn't steep enough.

but it had to be a very very very small incline for it to not move