Dunlop presents the custom D402 tyre: The only tyre approved by Harley-Davidson® for its touring models. Computer-optimised rubber compound for exceptional riding reliability on slippery surfaces and a more uniform wear resistance ensuring increased longevity. 3-ply polyester casing with two layers of fibreglass for improved load capacity and stability.
Road holding, braking, comfort... The choice of a motorcycle tyre impacts many aspects of your machine's behaviour, both on the road and on the track or off-road. It is therefore essential to carefully select the model that best suits your needs.
To help you gain clarity, here are some explanations that will assist you in deciphering the information on motorcycle tyres:

• Dimensions: tyre width in millimetres and tyre height as a percentage of that width. E.g. 190/55, for 190 mm wide and 55% high
• Structure: radial (ZR, or R) or diagonal (B), both tyres must be identical in this criterion
• Diameter: expressed in inches, e.g. 17 or 19
• Load index: maximum load that the tyre can support
• Speed index: maximum speed that the tyre can support
• M/C indicator: purpose of the tyre, M/C for motorcycles
• With or without inner tube: TL ("tubeless") for tubeless tyre, TT ("tubetype") with inner tube

In some specific cases, other mentions may appear, generally associated with the commercial name of the tyre. Here are a few:

• A: Kawasaki
• C, F or GT: BMW specification
• E or B: Special casing for heavy or loaded motorcycles
• G: Honda, Suzuki, Yamaha specification
• GTW: Heavy, fast and powerful Grand Touring motorcycles
• H: Original Honda specification
• K: Very fast motorcycles
• M: Original equipment Suzuki
• N: For Aprilia, Honda, Ducati, Kawasaki, Suzuki, Yamaha, Triumph
• RF: Reinforced tyre
• WW: White-walled tyre

Other references of lesser importance are also found on the sidewall of motorcycle tyres (country of manufacture, DOT marking, etc.)
Don't forget to regularly check your tyre pressure, as it ensures longevity and superior performance!