Is there a maximum permitted air pressure for Corima wheels?

Yes, for clincher tire wheels only. The maximum permitted air pressure is 8 bars. Important, always check the limit mentioned on the clincher tire itself, it may be inferior to 8 bars.
There is no maximum permitted air pressure for tubular wheels but it is important to take into consideration the required air pressure mentioned on the tubular itself.

What are the differences between an Aero and a Medium wheel?

These two profiled wheels have an important difference: the spokes. The Aero wheel is built with 2.8 mm elliptic profiled spokes and the Medium with 2.4 mm elliptic profiled spokes.
The result is that a pair of Medium wheels weighs about 125 g less than a pair of Aero wheels. The lateral rigidity is not the same between Medium and Aero wheels. The Aero wheels have an increased lateral rigidity compared to the Medium, that’s the reason why we don’t recommend Medium wheels to road racers, heavy cyclists or cyclists who ride a lot. If you are one of these, we recommend the use of Aero wheels.
The rim and the hub are identical on the 2 wheel models (Aero and Medium).

There are many carbon wheels on the market nowadays, are they all the same?

Corima was one of the first companies to launch carbon wheels on the market, it was in 1988. Today and in spite of the attraction of cyclists for carbon wheels, there are few composite wheel manufacturers and Corima is the only one to be able to suggest you a complete line of wheels for tubular and clincher versions. Corima wheels have been ridden in all the most prestigious world races by many Champions and in during events like road and track races, triathlon and wheelchair races. This experience is unique as well as the Corima know-how in the manufacturing of high performance composite products. A quality wheel must have a good lateral rigidity, must have a low inertia in rotation, must have a good aerodynamism to reduce the air resistance and must be light. Corima wheels are first among these 4 criteria.

Corima suggests better prices than other wheel brands, is it because the carbon used or the general quality of the products are not good?

The choice of materials is very strict at Corima’s and the manufacturing processes are very developed.
Our prices are the most possible adapted because we have the qualifications and the capacities to carry out the study and the manufacturing of our products contrary to many other brands which only buy rims and build them. There is another reason why we can suggest such good prices it’s that CORIMA has been selling direct to customers (via mail orders) since 1988 in France but also in several other countries. By reducing the intermediaries when it was possible, we have reduced as much as possible the costs and the final prices.
That’s why we can sell you carbon wheels at a better price than aluminum wheels made by our competitors !

Are the AERO wheels adapted for mountainous roads?

Most of the cyclists think that a profiled rim is not adapted to mountainous roads. It’s due to the fact that aluminum rims are heavy and get bad performances in inertia. On the contrary, the AERO wheel is an excellent wheel with its light and responsive rim when you ride on mountainous roads.

The studies made on the rim and the spokes give an important benefit in terms of aerodynamism (Up to 20% benefit of the average power of a cyclist consumed by the wheels compared to traditional good quality aluminum rims). This criterion is also important because after climbing there is also the descent and flat country.

With the AERO and MEDIUM wheels CORIMA offers you light, responsive, aerodynamic, with low inertia in rotation wheels.

Is braking efficient on carbon rims?

Some rubber pads don’t work well and some others are rather efficient but even
those ones don’t last long and leave rubber marks on the rim which makes the braking difficult.
Specific brake pads for carbon rims made by CORIMA through a Brite-Euram Research Program give good results on wet and dry surfaces and last much longer.
If you’re using CORIMA brake pads and that you sometimes change wheel, it is not necessary to change the pads, it’s also possible to brake on aluminum surfaces with CORIMA pads.
Important ! Remember that the braking is never perfect whatever the type of wheel you’re riding when it’s raining.

I have a CORIMA wheel built with a Shimano cassette body (or Campagnolo), can I change the cassette body by a Campagnolo one (or Shimano)?

Yes, it’s possible and very easy. You need to order the complete cassette body (reference 400141 or 400142). Unset the complete cassette body from the hub, for that you need to remove the screw on the axle (derailleur side), remove the cassette body you wish to change, set up the new cassette body making sure that you correctly set the claws, then set again the screw on the axle using a normal flat key. 4 SPOKE wheels made before 1993 and built with steel Shimano cassette bodies can’t be modified. AERO wheels (2000 version) with spokes crossed by 3 on the opposite side of the cassette can’t be modified either.

Is light weight the best performance criterion for a cycle product?

Light weight is a considerable criterion but it cannot define a cycle product's performance by itself and it must absolutely come along with a good rigidity of the wheels as of the frames ; it must also be found in the right place, especially on a wheel it is the rim which must be very light so as to provide a low rotation inertia, which helps repeated re-start-ups and accelerations during cycling. Another notion prevails, that of the design of a frame or a wheel aimed to obtain streamlined profiles.
This is how, at 40 km per hour, a pair of wheels with a streamlined profile can allow one to save 10% of the average power delivered by the athlete to keep this speed ; 500 gr gained over the weight of a bicycle would be valuable on a gradient but for a cyclist weighing 70 kg who rides a bicycle weighing 10 kg, which represents 80 kg in total, the energy saved on a gradient will be about 0.625%, which means that weight is no longer a drawback on a descent ...

How does ageing affect carbon composite products?

Ageing does not affect Corima carbon composite products which preserve their mechanical properties during many years without requiring any particular maintenance.

Which are the inspections Corima products go through?

Corima products go through many inspections throughout the manufacturing process ; each frame sees its rigidity checked prior to delivery ; clincher wheels are tested for their resistance to pressure ; the forks are manufactured to AFNOR standard NF R-30-004.

Which guarantees do Corima give its customers? Is an After Sales Service available?

All the products in the Corima range are guaranteed against faulty workmanship for a two years' period of time (see the details about consumers'protection in our General Conditions for Sale).
Corima ensures an After Sales Service from the very creation of its products as well as the repair of composite materials.
Many customers of other manufacturers have in the past requested Corima to repair their frames or wheels made of carbon composite (free estimate).

What is Corima's target?

Make everybody, pro or not, benefit from exceptional and unique materials!