First impressions began with their updated imaging-based lighting system. Forza 4 improves on what Forza 3 built and ironed out the details. Graphically the game feels very familiar as the base of the engine still remains the same I believe. The added lighting system, improved textures and rendering presents the overall package as a new, refreshing but very familiar game. Taking a sharp corner going full throttle and then being blind sided by the sun glare is something players will often come across until they feel the groove and know where the corner is.
Turn 10 partnered up with Pirelli to rework Forza 4's tire data by introducing a consistent and dedicated set of tests for the game. Instead of using a combination of different tire information and results; Pirelli has provided all the tire information allowing Turn 10 to directly put the data into the game engine. The result is cars now feel responsive and provide better detail and feedback. In addition to the tire data is update suspension mechanics which takes in account for AWD, FWD, RWD, and different car suspensions between American muscle cars and a Japanese AWD car. The combination allows the player to feel the grip from cold tires to prime temperatures as one races through hairpins and fast corners.
The second part will consist of the rivals system and new multilayer features.