I bet if you do an aggressive, full turn-to-lock u-turn it will rub. Mine did. Bent the hell out of my PS wheel well trim when it did. (Luckily I was able to straighten it back out with a little patience :-)
So, two things can happen: You'll mess up your fender lip and or cut your tire.
I would recommend a half turn on each torsion bar adjusting bolt. If it rubbed once, it will rub again...