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All about testing
Power heterogeneity of tires
Power heterogeneity of tires refers to dynamic mechanical properties of pneumatic tires, which are clearly determined by the set of measurement standards and test conditions worldwide accepted by tire and vehicle manufacturers. These standards include the following parameters: the spread of radial and transverse forces, conicity, ply steer angle, radial and side sway, bulges on the sidewall.
Tire manufacturers worldwide use this test to identify unusable tires, so they do not reach the market. Both tire manufacturers and vehicle manufacturers strive to improve the uniformity of tires for more comfortable movement.
Tire unbalance and its causes
With the creation of a first car, a first wheel balance problem appeared. Over the years, the traffic speed on the roads increased, the road pavements changed, and accordingly the unbalance problem changed.
Unbalance is the presence of unbalanced rotating masses: hubs, brake drums, rims and especially tires making driving more difficult. This unbalance reduces the life of the shock absorbers, suspension, steering, tires, road safety and increases maintenance costs.