While driving, use your mirrors to check for which of the following?

Before you start driving, adjust your mirrors to show both the inside and outside of your vehicle. During your drive, you can use your mirrors to keep an eye on your tires and any open cargo. Before turning, ensure your vehicle's back end is not colliding with anything by checking your mirrors. To keep an eye on a trailer you are towing, use your mirrors. If it starts to jackknife, you'll see it in your mirrors.