A composite rim including a reinforcing assembly is provided. The composite rim includes a first sidewall portion, a second sidewall portion, a radially outer portion and a reinforcing assembly. The radially outer portion includes a radially outwardly-facing tire-engaging surface. The reinforcing assembly is disposed proximate the tire-engaging surface and includes a reinforcer and a containment member for containing the reinforcer. The reinforcer has an axis extending circumferentially about the composite rim and is configured to reinforce the composite rim in a direction generally perpendicular to the axis of the reinforcer.