A good quality used treadmill can last a lifetime with proper care.
This really depends on which treadmill you end up buying. There are some excellent treadmills on the market for a cheap price with a very long warranty, meaning that you can expect your treadmill to last 25 years or more.
Not really. you can get good tires fairly cheap but check on how long they are rated to last.
The Precor 9.31 treadmill is a well constructed machine with good horsepower and a excellent warranty. This is a very expensive machine but will last a long time. It is rated one of the top ten treadmill on the market at this time.
The best treadmills are currently made by NordicTrack, and will last for a very long time.
The Sole F83 Treadmill (2009-2010 Model) has a five-star rating on amazon.com. It's expensive but it looks like a good model that will last you a long time!
.24
Any kind of treadmill should last a long time and be really durable. So, I think that the treadmill you want should be a good alternative, and reading some review of the product might help, as well.
How long it will last and performance.
About a year and a half--They are just made very cheap these days
Try K-mart, they have a lot of name brand names for TVs and they're very cheap and they're durable. or you can try best-buy they're really good and last long.
Length-wise, a standard Horizon treadmill is 59 inches or almost 5 feet long. It may depend on the treadmill you want to get. Check out the website: http://www.horizonfitness.com/Treadmills.aspx and click on "See Full Specs" on the right hand side of a treadmill you are currently viewing.
The disadvantages of cheap suitcases are that they may have been made from poor quality materials to make them so cheap. Thus they may not last as long and not be as robust.