Originally Posted by sleeper
Ideally yes. But we are talking HHR here.. Many don't seem to self adjust as they should..
Actually not an HHR problem it's an American engineering problem. You need to have most of the weight (and a lot of it) in the rear, like a rear wheel drive 60's-70's road cruiser, and have them adjusted correctly in the beginning to stand a chance of having them adjust themselves.
The way they are supposed to work: When you back up and apply the brakes the rear shoe is supposed to be pulled down, thus levering the adjuster up on the star. But, with front disk brakes and weight distribution of front wheel drive cars the rear drums don't engage the shoes enough to do the job.