Rim assembly with pads and connection members to connect spokes

A rim assembly includes a rim having a first connection bridge and a second connection bridge, and two walls extend from two sides of the first and second connection bridges. The first and second connection bridges each have multiple installation holes. A pad unit includes multiple pads and each pad has a through hole. The pads are located on a surface of the first connection bridge and the through holes are in alignment with the installation holes. Multiple connection members each have a passage, the connection members respectively extend through the installation holes and the through holes. The spokes are securely connected to the passages. The thickness of the rim is thin and the pads reinforce the connection positions where the spokes are connected.