RZ Fe100 are trailer Rings, designed for use on intercity express
coaches, drive axles on 6×2 units and twin trailer axles operating on
motorways and highways and consequently with slow and regular
tread wear. The name “Fe” stands for “Fuel economy”, underlining its
ability to combine high mileage and fuel consumption. This Ring design
with the new-concept compound ensures excellent rolling resistance
and very high mileage for its class of tread depth: 14 mm.