The diameter of the W465 AMG Performance Steering Wheel typically measures around 360mm (14.17 inches). This is a standard size for many high-performance steering wheels, providing a good balance between comfort and control.

Key Points About the Diameter:

• 360mm is commonly used for a sportier feel, as it offers precise handling and responsive feedback, which is ideal for performance-focused vehicles like the AMG G-Class.
• The slightly smaller diameter compared to standard, non-performance wheels contributes to a sportier, more agile driving experience, making it easier for drivers to make quick adjustments and turns.

This size is consistent with many AMG performance models, though it's always a good idea to check your specific model and year, as there can be minor variations depending on the vehicle trim and optional steering wheel packages.