2.1. "Type of tyre" means tyres which do not differ in such essential characteristics as: a2c0
2.1. "Type of tyre" means DEL which do not differ in such essential characteristics as: a1c0
2.1. "Type of tyre" means, in relation to this Regulation, a range of tyres consisting of a list of tyre size designations, brand names and trade descriptions, which do not differ in such essential characteristics as: a0c0