Why the driverside back tire come off in order to change it I have taken lugs this is a 2004 dodge durango?

The driver's side rear tire on your 2004 Dodge Durango (or any vehicle) won't just come off after removing the lug nuts if the parking brake is engaged. The parking brake applies force to the rear wheels, holding them in place. Even if the lug nuts are removed, the parking brake will prevent the wheel from rotating freely enough to be pulled off.

To remove the wheel, you need to:

1. Release the parking brake: This is crucial. Make absolutely sure the parking brake is fully disengaged.

2. If the wheel *still* won't come off: There might be other issues:

* Rust or seized components: Rust can weld the wheel to the hub. Penetrating oil (like PB Blaster) applied liberally to the hub's mounting surface might help loosen things up. You'll need to let it sit for a while before trying again. A mallet or rubber hammer might be needed to gently tap the wheel loose after applying the penetrant.

* Bent or damaged components: A bent wheel, damaged hub, or a stuck caliper can prevent removal. This requires a closer inspection.

* Wheel studs: A broken or severely bent wheel stud can prevent the wheel from coming off cleanly.

Important Safety Note: If you're struggling to remove the wheel, it's best to have a qualified mechanic take a look. Forcing it could cause damage to your vehicle or injury to yourself.