How do they work?

By using centrifugal force the free moving weights (durametal and synthetic fluid) sealed in the balancer automatically distribute to exactly where needed, placing the assembly in equilibrium or perfect balance. When a sprung assembly is out of balance, deflection is caused via the springs or tire sidewalls. These free moving weights sense this deflection and move opposite to the heavy points to balance the entire assembly, wheels, tires, drums, hubs, even mud, snow or ice stuck to wheels.

Should the rear duals and trailers be balanced?

Absolutely, the largest investment in tire dollars are on the rear. Typically, even when loaded duals carry less weight per tire and are prone to pounding. This causes excessive heat build-up and excessive, erratic wear. Centramatics help cool the duals and one pair of balancers handles four tires, wheels, hubs and drums.
Rear drums are a major cause of imbalance on dual assemblies.

Can Centramatics help tires that are already cupped?

Depending on the severity. Tires that are severely cupped will receive marginal results. While tires that are slightly cupped will true out. The balancers cannot grow rubber back where it is gone nore will it make the deeper tread wear faster. One or the other would have to occur to be able to correct severe tire cupping.

At what speed do Centramatics start working?

Most models start working at 20-22 mph depending on wheel diameter. This occurs long before vibration due to imbalance, which is at speeds in excess of 35 mph.

How long do they last?

The manufacturer has balancers with 1,439,716 miles on them and still in good condition. That's why they have a 5-year unlimited warranty and offer unequaled service.

What about alignments?

Alignments control the direction and travel of the tires. Vehicles must be aligned by creditable alignment facilities to exacting specifications. Premature tire wear and resulting vibration occurs if proper alignment is not maintained. Worn, loose or missing suspension components must be replaced. Centramatics balance the assembly and cannot correct alignment issues. Many forms of tire wear and poor handling result from mis-alignments.

• Installation Instructions
• RV Application Guide