As detailed in the 'Characters & Builds' section, 'Car Upgrades' are purchased through the R&D system. These are the primary way to improve your car's performance. Upgrades are categorized into 'Aerodynamics', 'Chassis', 'Powertrain', 'Durability', and 'Ers'. Each upgrade provides a specific performance boost. Prioritize upgrades that address your car's weakest areas or enhance its strengths on upcoming tracks. The 'Resource Points' earned from practice and race objectives are your currency for these vital improvements.
