Why does my front passenger tire lean outwards at the bottom and inwards at the top?

Usually if the tire is leaning noticeably, it's a bad ball joint or radial arm bushing.

ABSOLUTELY! AND IT IS DANGEROUS TO DRIVE!!!!!

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did you hit a curb or pot hole on that side? this can cause the leaning wheel. also if the camber shim or adjustment is loose will cause it also. no brakes sounds like a brake fluid leak if you talking about the same side or if its both sides it could be the master cylinder.

If your ball joints and shocks are good then you need to get the front end aligned. Repeated usage will eventually knock things out of line anyway, but worn shocks will speed the process up. so will worn ball joints.

move the top of the wheel inboard or outward. Positive camber is moving the top of the tire inward. Negative camber is moving the tp of the wheel outward. If you have shims add or remove then in pairs
front and back. With Struts raise the vehicle till the tires are off the ground. mark the strut at the cam bolt for a reference. Loosen the nuts and move the wheel. The angle changes when the wheel is off the ground.

Take it in and get it aligned There could be something worn out that needs replacing.

This is most likely a ball joint problem. If you can, jack that tire up in the air and see if you can move the whole tire in and out from the top. Try to see if there is movement in the ball joints while you move the tire. If that is not the problem, it could be a wheel bearing, but i would check the ball joints first. Hope this helps.

sounds more like a strut problem that needs to be checked

That's known as negative camber (positive camber would be if the top of the tire were leaning outward). This should be able to be fixed with an alignment as long as the suspension isn't damaged (ie, a bent control arm due to an accident or a hard hit on a curb, pothole, etc).