That wasn't a curb, that was a pothole. You'd have to be doing 35+ to push that tire down that far. If you can see the top of the tire bead through the rim bend it isn't safe at all. Looks fixable, though.....

 

its hammer time.

take a hammer and knock the lip back up! we do it on 11R22.5's all the time haha.

But put the spare on.

 

My friend bent a wheel last winter from a big pothole (low pro tires).

Take it to a wheel/tire shop and have them bend it back. It can be fixed.

 

i wouldn't recommend that more then likely you will crack or brake the aluminum trying to bend it back, but if you just going to toss the wheel, try it just make sure to take all the air out first and even pull the shredder valve (the piece in the middle of the valve steam)