Do you have custom car parts? Be sure your insurance company knows, these may not be covered without adding to your policy. Some examples:

1) Auto Start (unless factory installed)
2) Tires/Wheels
3) Bed liner
4) Moose Lights
5) Plows
6) Fuel Tanks (if permanently attached)
7) Seat Covers
8) Fender Flares
9) Window Decals/Tinting
10) Stereo Equipment/Navigation Systems (again, not factory installed)
11) Running Boards
12) Lumber Racks
13) Brush Guards
14) Tool box
15) Non manufacture Exhaust system
16) TV screen
17) Xtra speakers outside factory port
18) Gauges
19) Deflectors
20) Custom Grills
21) Cargo Rack
23) Ski, snow board, bike racks
24) Car Bra
25) Winches
26) Trailer Hitches

Do you have just one car? Maybe a car that you'd be stranded if it was in an accident?  Be sure to add rental car coverage to these vehicles, don't go without it!