I have 33's as well and when I first bought them conventional balancing worked fine. Then I had a slight shake in the wheel and had it checked. They told me some weight had falling off, used stick weight, and they suggested balanced beads. 75$'s later I have more of a shake now than I did before so I went back and they added one more oz for a total of 4oz's now. Sometimes it shakes and sometimes it doesn't. Mostly at 50mph. I think I'm going to go back to conventional. Big money loss on my part. I didn't think 33's would need them. The owner of the place asked if my tires were cheap, I asked him if he thought 1200$ for 5 tires was cheap sarcastically.