The Thunderstorm Update is the largest content drop since launch. It overhauls the UI for readability, smooths motorcycle handling on lower-end devices, and introduces the Thunderstorm Event that changes weather and traffic on the highway biome.
Three new active codes ship with this update: PATCH (1,500 Cash), 30MVISITS (5,000 Cash), and OPTIMIZATION (Cash bundle). Redeem them inside the Codes button in the bottom-left of the screen before they expire.
Performance tuning matters more than ever during the Thunderstorm Event because wet roads reduce tire grip. See the Tuning Handling guide for safer lean angles.