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This is what ChatGPT says:
For achieving the best 100-200 km/h acceleration on your BMW F10 M5 with 20-inch wheels and 784 hp, you’ll want an optimal balance of grip and rolling resistance for both the front and rear tires.
Rear Tires
2.3 bar on the rear tires is likely the optimal choice for balancing grip and rolling resistance. With this pressure:
Grip and Contact Patch: At 2.3 bar, the tire has a slightly larger contact patch, providing sufficient grip to reduce slip under high acceleration without significantly increasing rolling resistance. This makes it ideal for strong acceleration, where traction is crucial.
Comparison with Other Pressures:
2.2 bar: Provides even more grip due to a larger contact area, which can help if you experience any slip. However, this slightly increases rolling resistance, which may not be optimal for pure 100-200 km/h acceleration.
2.4 bar: Minimizes rolling resistance slightly more, which can be beneficial on very smooth roads but at the cost of reduced grip. For your power output, this could result in some slip during rapid acceleration shifts.
Front Tires
For the front tires, a higher pressure of 2.7 bar is generally beneficial for stability and reduced rolling resistance at high speeds.
Advantages of 2.7 bar in the Front: A higher front tire pressure decreases rolling resistance, contributing to stability and responsiveness in steering, which is important during high-speed acceleration. This setup also ensures the front tires don’t add unnecessary drag, keeping acceleration as efficient as possible.
Summary
Rear Tires: 2.3 bar provides an optimal blend of grip and efficiency, likely the best choice for quick 100-200 km/h runs.
Front Tires: 2.7 bar helps to reduce rolling resistance and improves stability, supporting overall acceleration efficiency.
This setup should offer you an excellent starting point for fast, controlled acceleration, maximizing the capabilities of your M5’s power.
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