Tyre sidewall markings provide essential information about the specifications and performance characteristics of your tyre.
Each marking on the tyre’s sidewall tells you something important — including the tyre’s size, load and speed
ratings, construction type, and usage suitability. These designations help ensure the tyre is correctly matched to
your motorcycle and riding conditions.
In the sections below, we break down the meaning of each symbol and number you may find on a tyre sidewall, so you
can understand exactly what you're riding on.
TYRE DESIGNATIONS
- Tyre size: 180/55ZR17
- Tread pattern designation: Sport Force+
- Manufacturer: Mitas
- Country of origin: Slovenia
- Speed category: (W) (>270 km/h)
- Load index: 73 (365 kg)
- Tubeless / Tubetype: Tubeless
- DOT marking: DOT H3 MR SFC
- Production date:
- Max. load capacity: 716 lbs
Max. inflation pressure: AT 42 PSI COLD - Load range: B
- Direction of rotation: Rotation
- Tread wear indicator: TWI
- Homologation No.: E8 75 R 000728
SPEED INDEX
The speed index indicates the maximum allowable speed at which a tyre can carry the load defined by its load
index.
This rating applies under specific conditions: the tyre must be in good condition, properly inflated,
carrying a load within the specified limit, and mounted on an appropriate rim. The speeds listed in the
table represent the upper performance limits of the tyre and are not intended to reflect recommended or
typical driving speeds.
LOAD INDEX
The load index is a numerical code that indicates the maximum load a tyre can carry (excluding loads at
speeds exceeding 210 km/h) at the speed specified by its speed index.
When replacing worn tyres, it is essential to ensure that the new tyres meet or exceed both the speed and
load index values recommended by the motorcycle manufacturer.
Write a comment