| The vibration control system -VAS 6230 A- has a range of additional features over and above regular static wheel balancing. |
| One of the system's special features is the ability to test the radial force of wheels/tyres while they are rotating. |
| To do this, a roller is pressed against the wheel with a force of approx. 635 kg. This simulates the force exerted by the tyre's contact patch on the road surface while the vehicle is in motion. |
| The contact forces on the tyre vary due to variations in the stiffness of the tyre and the degree of radial and lateral run-out on the wheel/tyre. |
| The -VAS 6230 A- detects and memorises the position of maximum measured radial force in the tyre. It then locates the smallest measurement between the wheel flange and the centre of the rim. |
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