Connection unit for carbon fiber rim

A carbon fiber rim assembly comprising:

• a carbon fiber rim having a bridge located on an outer periphery thereof and two sidewalls extending respectively from two sides of the bridge, each sidewall having a hook portion, an annular groove defined between the bridge and the two sidewalls;
• a tire having a tread body and two lips extending respectively from two sides of the tread body, the lips engaged with the hook portions;
• a reinforcement member being a plate and a hardness of the reinforcement member being higher than that of the tire, and
• a connection unit having a first connection member and a second connection member, the first connection member located at outsides of the sidewalls and the second connection member connected to a side of the reinforcement member, the first and second connection members connected to each other so as to position the reinforcement member between the sidewalls and the lips.