I finally got my Pit Bull tires I won at the AR-TTORA event in September. I went with 33x13.50x15 Rockers.
The Pit Bull warehouse is located in St. Louis, and I so happened to be going there for other reasons, so I got to pick them up and meet the folks, and tour the warehouse. Pretty cool.
Anyways, I've heard about using AirSoft BB's to balance tires, similar to DynaBeads. Using this chart
, and a little research at Wal-Mart, I've decided how much to buy, etc.
The chart states that I need 8 oz for a 33x13.50x15 6 ply tire (what I have). Most AirSoft BB's are of the 6mm variety, an weight around .12 grams (around .0042 oz).
So I know that 1 oz = 28.35 grams (thanks Google
), and 4 tires times 8 oz = 32 oz needed.
28.35 grams times 32 oz = 907.2 grams of BB's are needed. How many BB's is that?
907.2 grams divided by .12 grams = 7560 BB's. Great, now how many BB's per tire?
7560 BB's divided by 4 tires = 1890 BB's per tire.
According to my research, using more than the recommended amount per tire doesn't hurt anything. So if I bought 4 - 2000 count packs of BB's, I'd be right on at 8.46 oz each.
As for how to use them, just break a bead and dump them in, or dump them in before mounting the tire. They won't fit through the valve stem like DynaBeads will, so you have to break a bead. Getting them out is pretty easy using a shop vac.
The greatest benefit of using the BB's for balancing is that its dynamic. If I chunk a tire pretty bad, I don't have to rebalance the tire. The BB's will move around and compensate for the imbalance. Another benefit is that I can mount my tires myself, and don't have to pay a tire shop
Hopefully this will help others later down the road.