Tire Balancing 101

Here's where I got the static tire balancer I've been using for years. Marc makes excellent stuff for mostly BMW's, and this balancer is very well made and reliable.

Here's some of the tools and attachments I use for balancing different wheels. The top rod and cones are for the single sided swingarms for Ducatis. The middle is a universal style I had machined that fits many different sized wheel bearings. The lower one and the round aluminum adapter (below to the right of it) is a Marc Parnes item and is for single sided BMW wheels.

Note: This balancer is designed to use the stock axles also.

Then you'll need stick on wheel weights (shown are car type), a small level (I'll explain that later), cutting pliers and brake cleaner for removing the old weights.

Here's the unit with the rod and cones I used to balance the Ducati wheels and tires. Note the vertical adjustment of the left bearing support, it's used to compensate for axles that are large on one end (usually front). Also notice that the right bearing support is adjustable for width of the wheel/tire combo, this is handy when setting the positions of the bearings on the axles so there is no interferance when spinning the wheel. Marc also sells a rod setup that attaches to his balancer that is used to check runout of the wheel.

Rain tires mounted and ready for balancing.

Tip 1. To balance a tire using the minimum amout of weight first check the balance of just the rim. Tires are checked for balance at the factory and marked for the lightest spot, this spot should be positioned opposite the heaviest point of the rim (which many, mistakenly, think is the valve stem). Note the yellow dot on the rim above, this is the "true" heaviest point of the rim.

Now notice the yellow dot on the rear wheel in relationship to the valve stem (preceived heaviest spot). As seen, there can be quite a difference between these two, in this case almost 180 degrees. The yellow dot is the point I use as the heaviest to balance the wheel/tire. You'll use less weight with this method, although I realize it takes a little more time, but seeing as I've mounted and balanced all my own tires for years, I feel it's worth it. Trust me, most shops will never make the effort to do this and you'll end up with a 4 inch strip of weights on the wheels, AND, they would probably not even bother to seperate them for both sides of the rim. That's tip 2. If you need quite a bit of weight it should be divided in two strips and applied to both sides of the rim.