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WHY CADEX HOOKLESS?


IMPROVED TYRE PERFORMANCE

Compared with hook-type rims, the CADEX hookless design has a wider inner rim width, which allows a smaller, lighter tyre to have the same volume as a larger, heavier tyre, resulting in a lighter wheel/tyre combination.

Hookless rims also help create a more round tyre shape that provides superior grip and handling as well as added sidewall support when cornering.

AERODYNAMICS

The CADEX hookless design pushes the tyre bead inward for more seamless airflow between the tyre and the sidewall of the rim. The result is less drag and improved aero performance compared to standard hook-type rims.

DURABILITY

CADEX eliminates rim hooks through an innovative manufacturing process that allows for a more consistent application of the rim’s carbon fibre material. This process, combined with an increased rim bead width, enhances durability and impact resistance.

SPECIFIC CHALLENGES FOR ROAD HOOKLESS

TYRE RETENTION AND COMPATIBILITY

Like any modern tubeless system, the tolerances of the tyre bead diameter and hookless rim bead seat diameters must be carefully calibrated in order to create an airtight seal that will allow the tyre to stay on the rim and the rider to slow to a safe stop in case of puncture. If the tyre bead diameter is too large, it will not match the rim bead seat diameter. Likewise, if the bead material isn’t strong or stiff enough under high pressure loads, the tyre bead will stretch over time and it will lose its original diameter.

If rim manufacturers do not work directly with tyre manufacturers when designing new hookless rims, tolerances and bead materials can vary. This can make it difficult to pair tyres and hookless rims from different manufacturers.

WHAT SETS CADEX APART?


Rather than using a Kevlar-only bead, which can stretch over time and compromise the tyre bead diameter, CADEX tyres feature a carbon and Kevlar composite bead that’s strong enough to avoid stretching under heavy loads. This, combined with our accurately defined tyre and rim bead seat diameters, tested at pressures up to 150psi, guarantee dependable air and tyre retention.

WHAT PRESSURE AND TYRES CAN I USE?


TYRE PRESSURE

No matter the type of rims or tyres you are using, never exceed the maximum pressure stated on the rim or tyre. Always follow the lower of the two maximum recommended pressures.

TYRE COMPATIBILITY

CADEX tubeless tyres are always the best match for CADEX Tubeless WheelSystems. However, should you choose to use a non-CADEX tyre, we have created a CADEX approved list of tyres that we have tested to be 100% compatible with CADEX rims. Below is the current list of tested and approved tyres:

CADEX APPROVED TYRE LIST

Brand/Model
Approved Sizes
700x23C
700x25C
700x28C
700x32C
CADEX RACE TUBELESS
GIANT GAVIA COURSE 0 TUBELESS
GIANT GAVIA COURSE 1 TUBELESS
GIANT GAVIA FONDO 0 TUBELESS
GIANT GAVIA FONDO 1 TUBELESS
GIANT GAVIA RACE 0 TUBELESS
GIANT GAVIA RACE 1 TUBELESS
GIANT GAVIA AC 0 TUBELESS
GIANT GAVIA AC 1 TUBELESS

For tyres not on the CADEX Approved Tyre List, we are working with manufacturers so updates can be made to approve them. However, be aware that if you choose to use a tyre that is not on the CADEX Approved Tyre List, you do so at your own risk, and we cannot guarantee that the tyre will function correctly and safely with the CADEX Tubeless WheelSystem featuring a hookless bead.

If necessary, you may use an inner tube on a CADEX rim, so long as the tyre you are using is on the CADEX Approved Tyre List. However, please note that CADEX rims are designed to perform best when set up as tubeless and used without an inner tube.