Tires are made up of internal beads, body plies and belts that are encased in rubber, assembled and cured. Alloy wheels are cast, cooled and machined. And even though both are built to tight tolerances, there is bound to be some unavoidable weight imbalances during the manufacturing process.
How many wheel weights are too many?
While there is no industry standard, the general consensus of what is too much weight is when it takes more than 1% of the assembly weight to bring it into balance.
Let's take a test example of one incident I recently encountered when a customer expressed concern that 15 wheel weights were used on his 19" BMW wheel and tire package. Is 15 weights too many? Let's find out.
- Each stick-on weight is a quarter of an ounce
- 15 weights on one wheel = 3.75 ounces
- 19x8.5 wheel weight = 27.5 pounds
- 235/35R19 tire = 24.0 pounds
- Total package weight = 51.5 pounds or 824 ounces
- 1% of that = 8.2 ounces
How will you know that your wheels and tires are properly balanced?
No worries, when wheels and tires are purchased from Tire Rack together as a package, we mount and balance the tires using our Hunter Engineering GSP9700 Vibration Control System to evaluate and eliminate nearly all possible wheel- and tire-related vibration causes. The best part? It's a free service. Learn more about this process.
Build a package for your car at Tire Rack.