how much camber can I get away with on my 99 Civic EX? I just don't want a whole lot of weird tire wear...i ask this because i think my rear tires are slightly off on the camber...i put 16-inch wheels on there, thats all i did

 

Rear camber isnt going to make a big deal. The rear camber is noticeably negative on my car and i havent had any issues with premature tire wear. The biggest problem for tire wear is Toe in/out

If it really bothers you you can go get an alignment but i dont think it is a big deal