Document ID: chunk:federal_register_of_legislation:F2018L01516:body:0:p8
Version: federal_register_of_legislation:F2018L01516
Segment Type: other
Provision Reference: 
Character Range: 23430–26367

maximum permissible size of tyres and rim widths, taking into account the minimum and maximum wheel off-sets, within the minimum and maximum suspension and steering constraints as declared by the vehicle manufacturer. This shall be verified by performing the checks with the largest and the widest tyres, taking into account the applicable dimensional tolerances (i.e. maximum envelope) related to the tyre size designation as specified in the relevant UN Regulation.
              5.2.1.4. The Technical Service and/or Type Approval Authorities may agree to an alternative test procedure (e.g. virtual testing) to verify that the requirements of paragraph 5.2.1.3. are met.
              5.2.2. Load capacity
              5.2.2.1.  Subject to the provisions of paragraph 5.2.4. of this Regulation, the maximum load rating of every tyre as determined in paragraph 5.2.2.2. of this Regulation, including a standard spare unit (if provided), with which the vehicle is fitted shall be:
              5.2.2.1.1. In the case of a vehicle fitted with tyres of the same type in single formation: at least equal to half of the technically permissible maximum axle mass for the most heavily loaded axle, as declared by the manufacturer of the vehicle.
              5.2.2.1.2. In the case of a vehicle fitted with tyres of more than one type, in single formation: at least equal to half of the technically permissible maximum axle mass as declared by the manufacturer of the vehicle, in respect of the relevant axle.
              5.2.2.1.3. In the case of a vehicle fitted with tyres of class C1 in dual (twin) formation: at least equal to 0.27 times the technically permissible maximum axle mass, as declared by the manufacturer of the vehicle, in respect of the relevant axle.
              5.2.2.1.4. In the case of axles fitted with tyres of class C2 in dual (twin) formation: at least equal to 0.25 times, with reference to the load capacity index for dual application, the technically permissible maximum axle mass as declared by the manufacturer of the vehicle, in respect of the relevant axle.
              5.2.2.2. The maximum load rating of a tyre is determined as follows:
              5.2.2.2.1. In the case of tyres of class C1, the "maximum load rating" as referred to in paragraph 2.34. of Regulation No. 30 is taken into account.
              5.2.2.2.2. In the case of tyres of class C2, the "table load-capacity variation with speed" as referred to in paragraph 2.29. of Regulation No. 54 is taken into account, which shows, as a function of the load-capacity indices and nominal-speed-category symbols, the load variations which a pneumatic tyre can withstand taking into account the maximum design speed of the vehicle.
              5.2.2.3. The manufacturer shall provide in the vehicle owner's handbook, or by any other communication means in the vehicle the necessary information about replacement tyres load capacity.