I always said "NO'...but I was running 28x9s.Little tires never gave me any trouble.My buddy has a FED and runs 33x10s.Didn't balance them and it shook so bad he couldn't make it to half track.....1/8 mile.Put her in the trailer.Matter of fact,I just got done balancing mine about two hours ago.Bubble balancers are sooo cool!!!