The Y870B is a spare tire designed by Yokohama for Original Equipment applications. It allows vehicle manufacturers to free up trunk space and reduce the overall weight of the vehicle by using a smaller spare tire instead of a full-size one. The Y870B tire is meant to provide temporary mobility in case of a flat tire caused by various reasons such as puncture, cut, road hazard, accident, or blowout. Similar to other spare tires, the Y870B has unique characteristics to fulfill its temporary purpose. It has a smaller physical size, narrower tread, shallower tread depth, and lighter-weight construction compared to the regular tires that come with the vehicle. To ensure optimal performance, the Y870B tires need to be maintained with a cold tire inflation pressure of 60 psi. Additionally, the driving speed is restricted to a maximum of 50 mph when using these spare tires. It is important to note that the Y870B spare tire does not include a wheel. Therefore, it should be mounted on the appropriate wheel before usage. For specific recommendations and restrictions regarding the use of the Y870B spare tire, it is advisable to consult the vehicle's owner's manual. This manual contains valuable information provided by the manufacturer.

 Know more