Frequently Asked Questions
What are your carbon rims made of?
We use exclusively Japanese Toray carbon fibers. Several types of carbon fibers are mixed in order to achieve the best performance, durability and weight properties.
Can I use metal levers to mount the tires?
Absolutely not. Cenos rims are designed for an easy tire mount. While mounting, make sure that the bead of the tire sits in the center lower part of the rims, and you should be able to do it without any tools at all.
Does Cenos offer ceramic bearing option?
Generally speaking, ceramic bearings are not suited for cycling. In industrial or medical equipment applications, where the rpm is high, the load is low and the operating conditions are clean, ceramic bearings perform well. However, that is not the case in cycling, where bearings are highly exposed to high loads and the ingress of water and dirt. The optimal ideal rating of ceramic bearings is 10.000rpm+. In cycling hubs applications, the maximum rpm may be up to 500-600rpm, (road wheel at 35km/h is 265rpm). In these conditions, the advantage of ceramic bearings is negligible and does not provide a performance benefit for cycling as many people and companies claim they do.
Another issue is the hardness of ceramic balls. The shocks of hitting potholes and other road bumps impact the hard ceramic balls into softer steel races, which eventually get dented and lose their smoothness. This causes drag and short service life.
How much tubeless sealant should I use, and how often it need to be refilled?
The amount of sealant required depends on the width of the tire. The sealant should coat the inside of the tire walls and there should be a small puddle in the bottom. Use these values as a base, but more sealant would always give more protection.
- 25mm tires – 40-50ml
- 28mm tires – 45-55ml
- 32mm tires – 55-65ml
- 40mm tires – 70-90ml
- 45mm tires – 80-100ml
- 2.1” tires – 100-120ml
- 2.25”+ tires – 120+ml
The sealant is water-based and dries out over time. Do not leave the tires in the direct sunlight as this accelerates the drying. Refill the sealant every 3-4 months.
Do you sell front and rear wheels separately?
Yes, we can sell the front or rear wheels separately. Please contact us by email and we will arrange it.
What size tires can I use on my G3 gravel rims?
Cenos gravel rims are wider even than many of the industries’ MTB rims. So there is no strict limit on tires. Though we do recommend using 30-50mm tires. Remember to keep up with the pressure requirements. If you run road tire on them, make sure it is hookless compatible.