Faulty Adjustment
WARNING: This page is about a different car, the 2014 Volkswagen Touareg, 2013 Volkswagen Touareg, 2012 Volkswagen Touareg, and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.
When a customer complains of "diagonal flattening", the toe adjustment must be checked. If it is OK, the cause for the diagonal wear spots is most likely in the tires.
Tires with diagonal wear spots which developed due to faulty adjustment of the axle geometry are excluded from the warranty.