Haida HD921 Pneumatico Ultra High Performance (225/30 ZR22 87W XL)

Haida is a brand of tires that adheres to the European tire labeling regulation, which specifies information on fuel efficiency, wet grip, and external rolling noise of tires. It also refers to the winter properties of the product. The current regulation (EU 1222/2009) in effect since November 1, 2012 will be replaced by the new regulation (EU 2020/740) from May 1, 2021, which introduces new requirements. The classification classes for fuel efficiency, wet grip, and external rolling noise have been modified, and the layout of the EU label has been changed.

Product technical sheets stored in the EU database can be downloaded via a QR code integrated into the label. Information on snow and ice grip has recently been included for tires that meet these criteria. Spiked tires, emergency type T tires, tires with a speed allowance below 80 km/h, and tires for rims with a nominal diameter of 254 mm or 635 mm are also available.

The fuel consumption depends on the rolling resistance of the tire, the vehicle itself, driving conditions, and the driving style of the driver.

The measured rolling resistance (rolling resistance coefficient) of the tire is divided into classes A (maximum efficiency) to E (minimum efficiency). If a fully equipped vehicle with tires of class A, it is possible to reduce fuel consumption by up to 7.5%* compared to tires of class E. In the case of commercial vehicles, the reduction can be even greater if measured according to the methods of testing established by Regulation (EU) 2020/740. Fuel consumption depends largely on your own driving style and can be significantly reduced by eco-driving.

The tire pressure should be checked regularly to improve fuel efficiency. The wet grip is divided into classes A (shorter braking distance) E (longer braking distance). If a car equipped with tires of class A, compared to those of class E, it is possible to reduce the braking distance by up to 18 m when braking from 80 km/h (on a road surface with average adhesion). Traffic safety depends largely on your driving style. The stopping distances must always be respected.

The tire pressure should be checked regularly to improve wet grip. The external rolling noise emitted by a tire affects the overall volume of the vehicle and not only the driving comfort but also the acoustic pollution of the environment. In the European tire label, the external rolling noise is divided into 3 classes, from A (lowest rolling noise) to C (highest rolling noise), measured in decibels (dB) and compared with the European emission limit values for the external rolling noise of tires.

The symbol with the classification "A" indicates that the tire's external rolling noise is more than 3 dB below the EU limit value in force until 2016. The classification "B" means that the tire's external rolling noise is up to 3 dB below or equal to the EU limit value in force until 2016. The classification "C" indicates exceeding the specified limit value.