Stresses hub bearings. Other than looks, there are no positives.
I thought that the spacers might allow me to run wider tires without rubbing on the suspension components. I will be driving in soft desert sand and the wider tires will allow the car to float more on the sand. I see that at least one owner has run 255/55R18 tires but don't know if he lifted the car or added spacers. I'm completely open to pros and cons and won't use the spacers if not necessary.