Yes! If you are hit by an uninsured or under-insured driver while riding your motorcycle the UIM on your auto insurance policy would cover you. But remember! You may have opted to refuse UIM on your current auto insurance policy because it is not mandatory in Colorado! We advise that you check your current auto policy and if you do not have UM/UIM adjust the policy to add it! The insurance companies don't want to sell it but trust us...you want it and the state of Colorado makes them offer it to you.