Uneven tire wear on back left tire. When ever i go over portholes or bumps.. I hear a loud tap noise from the back left shocks.. on my 15k service i did mention it to the TASS but he said that normal and not to worry.. During a water service my car was lifted and thats when i notices the rear left tire had worn off more than my fron tires and the right rear tires. when i asked with other fiat /punto owners i got the same reply. i came to know from a Service manager that the culprit is a twist ___(not sure will post it later). and that it can be replaced under warranty. he also mentioned this is universal in India makes and more evident in active and dynamic as they had smaller tires. more over fiat will replace of refund the amount if the tire was worn out because of this issue..