Your R&D focus should align with your team's strengths and weaknesses, as well as your driving style. If your car struggles on high-speed tracks, invest in 'Aerodynamics' for better downforce. If you lack straight-line speed, 'Powertrain' upgrades are key. Regularly check the 'Car Performance' screen to identify areas where your car is lagging behind competitors. Don't neglect 'Durability' entirely, as component failures can ruin a race. A balanced approach with a slight emphasis on your car's biggest deficit is often the most effective strategy.
