Take another look at your coverages and see what you are actually buying. In some cases you might be buying a coverage you don't need--if you have great health insurance, do you really need to buy it again on your vehicle policies?* If you never carry a passenger, do you need coverage for that? If you can afford to take a loss, don't buy that coverage. Increase your deductibles if you can afford it. If the bike is paid off and you can afford to replace it, drop the collision and comprehensive coverages. If the bike goes into storage for the winter, drop all coverages except comp during the storage period (check with your lender, though).
And, see if there is coverage that might be wise to add. If you have a fairly substantial net worth, take a look at umbrella liability coverage and get enough vehicle liability coverage just up to the minimum required for the umbrella policy...often $500k.
Can you qualify for any policy discounts--multiple policies with the same company, garaged vehicle, limited miles each year, MSF training, etc.
Try dialing for dollars. Call various insurance companies and ask about insuring either each item (home, car, bike, umbrella, etc.) or put them all together in a package. Amica is one that gets consistently high marks from the readers of "Consumer Reports"; USAA also, if you qualify. These may farm out the motorcycle coverage in certain states, but check the rates.
Vehicle insurance coverage definitions:
Car Insurance Coverage Definitions | CarInsurance.com
Car Insurance Coverage Options—Allstate
*The new health insurance coverages starting January 1 changes a lot of things. It might be cheaper to drop vehicle injury coverage and upgrade health insurance to a "Gold" or "Platinum" level plan--the info will be available October 1 on each state's health insurance Marketplace. We won't know until we check.