One problem related to rear suspension has been reported for the 2005 Acura TL. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Acura TL based on all problems reported for the 2005 TL.
My 2005 Acura Tl el42 bridgestone rear tires went completely bald on a 3000 mile trip(19000 miles total) from dallas to colorado and back. It appears that there is a suspension/tire problem where the rear alignment under full load of 2 passangers and luggage in the trunk degrades and causes severe tire wear. This causes severe loss of control on wet pavement with rear hydroplaning at even <50 mph. Acura has a TSB and replace tires at lowered cost but only with the suspect el42 tires. After further internet searches this seem not to be isolated incident.