A4 Quattro Cabriolet V6-3.2L (BKH) (2007)
Radial depressions
Radial depressions are slight concavities in the tire sidewall.
They run from the bead towards the shoulder of the tire.
For an illustration of the components mentioned, refer to
Radial depressions are caused by the accumulation of material at the joints of the tire components.
Radial depressions do not influence:
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Safety
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Service life
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Running characteristics or other properties of the tire.