Double-check wet laundry before throwing in the dryer — exposed zippers can snag, pens and lip glosses will melt. Sort by type and weight, pull delicates like sweaters and lingerie to avoid pilling or shrinkage. If you have the space and time, hang dry large bulky (and linty) items like bedding and towels. Load the dryer drum no more than ¾ full and use a minimum number of dryer sheets – or none. Grab a level and make sure your machine is sitting level. Wobbling is not just noisy and annoying, it may affect performance and can shorten the life of your machine.
From:: Home dryer tips #2.