Wheeled support device for disabled vehicle tire

In a support device for the disabled tire of a vehicle comprising a generally horizontally extending, generally U-shaped frame having substantially parallel side members, front and rear wheels and a substantially U-shaped cradle extending between said side members and between said front and rear wheels and having a width sufficient to receive a tire to be mounted on said support device, the improvement comprising a restraining member mounted forwardly of said cradle for pivoting movement from a first position in which its extends in a generally vertical direction above said cradle for retaining said tire in its mounted position against forward movement out of said cradle, to a second position in which it extends in a generally horizontal direction and resilient means for yieldably retaining said restraining member in said first position, whereby said restraining member can be temporarily depressed into its said second position for the purpose of positioning said support device under a vehicle, and then released to return through the action of said resilient means to said first position.