From classic race cars to the latest British concepts, the March Pirelli Car Pack is one of our most varied and surprising yet. Available 3/6/2012

This pack is amazing. Available now on Xbox LIVE, the February American Le Mans Series Pack is a racers dream, featuring some of the hottest cars Forza 4 has ever featured in a DLC pack.

This pack includes ten brand new cars to add to your ever-growing Forza 4 garage, including fan favorites like the 1986 Dodge Shelby Omni GLHS and the 1970 Alfa Romeo Montreal, purpose-built racers like the 2011 Lamborghini #08 West Yokohama Gallardo LP560-4 and the supercar force of nature that is the 2012 Pagani Huayra.

The December IGN Pack features an eclectic and exciting lineup of cars sure to please racers, painters, and collectors alike.

The November Speed Pack is available now and includes ten incredible cars—from classic hot rods like the 1957 Chevrolet Bel Air to state-of-the-art supercars like the Lamborghini Aventador.

Available now the Launch Bonus Pack for Forza Motorsport 4, a collection of ten cars previously available only to those Forza 4 players who had either pre-ordered from specific retail outlets, or picked up the game during its first run via the “Ship Bonus Car Pack”.

The six game add-ons included in the Season Pass offer will be released from November 2011 to April 2012 and are must-haves for “Forza Motorsport” fans. Buy a Season Pass today!

The American Muscle Car Pack contains 10 of the most iconic cars from the golden age of American muscle for you to collect, race, and customize.

The Forza Motorsport 4 Avatar gear has arrived! Now you can deck your Xbox LIVE Avatar out with some sweet official Forza 4 gear.

Official Forza Motorsport 4 T-Shirts! We’ve got four designs to choose from—all designed in-house and inspired by the on-track action you’ll find in Forza Motorsport 4. Check them out!

Check out this FREE premium theme for the Xbox 360 featuring the 2012 BMW M5!