Carbon wheels can be repaired in some cases, but it depends on the extent and type of damage. Here are some common types of damage and whether they can be repaired:

Cracks or fractures

If your carbon wheel has a crack or fracture, it may not be repairable. This is because cracks can compromise the structural integrity of the wheel, making it unsafe to ride. It's best to have a professional assess the damage and determine if the wheel can be repaired or if it needs to be replaced.

Scratches or cosmetic damage

Minor scratches or cosmetic damage can often be repaired with a touch-up kit or by sanding and refinishing the affected area. This type of damage is usually not a safety concern, but it can affect the appearance of the wheel.

Broken spokes or nipples

If a spoke or nipple is broken, it can usually be replaced. However, it's important to use the correct replacement part and to have a professional mechanic perform the repair to ensure that the wheel remains structurally sound.

Warping or out-of-true

If your carbon wheel is warped or out-of-true, it may be repairable. A professional mechanic can use specialized tools and techniques to straighten the wheel and ensure that it spins true. However, if the damage is too severe, it may not be possible to repair the wheel.

In conclusion, carbon wheels can be repaired in some cases, but it's important to have a professional assess the damage and determine the best course of action. If you suspect that your carbon wheel is damaged, it's best to have it inspected by a professional mechanic to ensure that it is safe to ride.