What's the audi a4 steering wheel size?

Depending on the specific model year of Your AudiA4, the steering wheel size may vary slightly. The range is generally 14-1/4 inches to 15-3/4 inches in diameter, with a grip circumference of 4-1/2 inches to 5 inches. For example, the 2019 model year uses a steering wheel measuring 14-3/4 inches, and a grip circumference of 4-1/2 inches. If You're asking because You're looking into an aftermarket steering wheel cover, it's best to select an option that is custom made for Your model and model year; if You find one that's too small, it won't fit. If You select one that's too large, it won't feel quite right. Purchasing one that's fitted to Your exact vehicle will enable it to fit like a second skin.