anybody use wheel spacers?

I need about another half inch or so of room from my notch and rim so I was thinking about getting some "spacers" for it. My airbag is located between the rim/tire and the notch.... I was told some might cause a vibration after 40mph....looking for any suggestions...positive or negative about them...thanks...
if you don't understand look at the video in the beginning...

i use a pair on the front of my ranger. no vibration issues

spacers wont cause much vibration if they are made correctly. I got some bad ass ones from a guy on ebay, wheeladapters I think is his ebay name (I did a pattern change so mine are technically adapters as well as spacers) They are top notch. With a 1/2 inch spacer you will need longer studs or bolt on spacers. You can get 1/4" spacers at the auto parts store, but I recommend you spend the money on extended thread lug nuts if you dont put in longer studs (just for 1/4, I would defintely get longer studs for a 1/2)

I would worry more about that -35 degree pinion angle causing vibration anyway... I know it gets better at ride height, but holy cow man.