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# Tyre Knowledge

Combination of tubeless and tube-type motorcycle tyres with rims and inner tubes

as well as the usage of valve caps and flaps

There are two different types of Continental Motorcycle and Scooter Tyres available: Tube-Type Tyres and Tubeless-Tyres. 

 

Tubeless-Tyres (TL Tyres)

These tyres are designed to be mounted on tubeless rims (see rim description below) and have a corresponding TL marking in the description of the tyre size (e.g. 120/70 ZR 17 M/C 58W TL).

Continental Tubeless-Tyres can be mounted on tubeless rims without inner tubes but also on tube-type rims, if mounted with inner tubes of the correct size.

Tube-Type Tyres (TT Tyres)

TT tyres are designed to be mounted on tube-type rims only (see rim description below) and have a corresponding TT marking in the description of the tyre size (e.g. 90/90-21 M/C 54S TT).

Tube-Type Tyres from Continental have to be mounted on tube-type rims with inner tubes of the correct size but are not allowed to be mounted on tubeless rims, neither with tubes nor without tubes.

Types of Rims

Tubeless rim

  • only to be used without tube
  • e.g. MT H2-type with safety humps
  • usually used for cast wheels
Tubeless Rim Type

  

Tube-type rim

  • only to be used with tubes
  • e.g. WM-type
  • usually used for spoked wheels 
Type of Rim

Inner Tubes

  • If replacing a tyre with inner tube, always use a new tube!
  • It is not allowed to mount tubes on tubeless rims, only tube type rims are suitable for tubes!
  • Continental tubes are developed for speeds up to 130 MPH.
  • Before mounting the tube, place the washer on the valve stem.
  • After mounting lock both nuts against each other with a space of approx. 5mm (0,2”) above the rim. This type of mounting ensures, that on the one hand the valve is held in position for inflation, but on the other hand it does not tear off the tube in case the tire and tube rotate slightly on the rim.
Tube Illustration

Valve Caps

  • Please mount the valve cap after mounting a tyre!
  • The valve cap protects the valve core from dirt and avoids air loss in case of a faulty valve core.
  • Your valve core may open with centrifugal force – a loss of pressure could occur.
  • Use a quality valve cap with O-ring.

Flaps (Rim Tapes)

  • Flaps or rim tapes are used for tube-type rims.
  • They are in place to protect the inner tube from damage, especially from the spoke nipples, which are mounted inside the rim.
  • When fitting a new tyre or inner tube, the rim tape must be checked for damage and replaced if necessary.