In addition, if you get the properly backspaced wheels, you won't be placing an additional 11 parts on each wheel, to fail (spacer, 5 studs, 5 extra lug nuts).
Not saying that the spacers on the market are by ANY means unreliable, or anything less than excellent products, only saying that the more parts you have, the more parts you have that can fail, due to unexpected manufacturing defects, which the spacer manufacturer has NO control over.