How to choose a treadmill

To find the right machine for you, be sure to try before you buy. Budget and midrange models can usually be found at Sears, Sports Authority, Walmart, and other discount and sporting-goods chains. Shop at sporting-goods specialty stores for the moderate to high-end models. Important factors to consider include these:

Dimensions

Nonfolding treadmills are about the size of a small couch. Folding treadmills are generally shorter than nonfolding models, and they can be stored upright to save space. We've also seen some folding models that are very compact. Keep in mind that you will need to allow extra space around the treadmill for access, so plan accordingly.

Ergonomics

Consider your stride. If you have a long stride or you plan to run, a longer deck might be necessary—60 inches long by 20 inches wide is long enough for most runners. But if you have an unusually long running stride, try out models in the store to make sure. Walkers can get by with the shorter decks on some folding treadmills and many budget models.

Warranties

Look for one that provides at least two to three years of coverage on major moving parts on your treadmill and a year for labor. Survey data on the probability of failure and repair costs showed that extended warranties are probably not a good deal.