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For 2006, the Acura RL was also offered in a second trim level, the optional 'Technology Package' which included three new features: adaptive cruise control (ACC), Collision Mitigation Braking System, and Michelin PAX System run-flat tires on unique PAX 235 mm x 460 mm A ("A" for asymmetric) aluminum alloy wheels with unique 245-680R460A Michelin Pilot HX MXM 4 all-season Grand Touring type radials designed for the Michelin PAX System.