2001BS AU 50-4.1.1a:2001 Tyres and wheels - Rim profiles and dimensions - Car rims - Specification for metric series rims - Sub-section 1.1a: Specification for metric series rims
BS ISO 4000-2:2007 Passenger car tyres and rims. Rims has been changed from BS AU 50-4.1.1a:2001 Tyres and wheels - Rim profiles and dimensions - Car rims - Specification for metric series rims - Sub-section 1.1a: Specification for metric series rims.