Rubber tyres we supply are from manufacturers with following certification: ISO 9000, China Compulsory Certificate (CCC), ISO/TS 16949:2009, SASOBGCC (Saudi Arabia) and INNMETRO (Brazil). The rubber tyres are also compliant with DOT Standard of US and the EC Standard. All steel radial tyres and bias tyres are available with a choice of multiple tread patterns. Please see the brochure for size, tread pattern and other information about the rubber tyres.