LifeSpan TR4000i Folding Treadmill Review

by Jack on May 3, 2016

Summary: The LifeSpan TR4000i is a folding treadmill which includes a 3.25 horsepower motor and a 20 x 60 inch (W x L) running platform. These are good specification for a person wanting a home model for running. The maximum user weight of the model is 350 pounds. Below we will review and rate the most important features to consider before buying:

  • Motor
  • Frame
  • Tread Belt
  • Cushion System
  • Warranty

Notice: We listed the warranty last on the list but when buying any treadmill you should absolutely look at the details included in the warranty. Also, at the end of the page we have a more recommendations in this price range.

LifeSpan TR4000i Folding Treadmill review

Area #1 – Motor

Some people may want information on the “extras” like the exercise programs but we consider this bullcrap, without a quality motor first you will not be training much.

Before we go into whether or not this LifeSpan model has a quality motor (YES IT DOES!) we first want to tell you want you need to look for when comes to a treadmill and its motor.

There are a few different styles of motors you may come across when looking at different models. But there is only one style you want to buy. This is called the Continuous Duty Horsepower (CHP) this is because this style is by far the most reliable, durable and efficient.

The LifeSpan TR4000i does have this style. It’s a 3.25 horsepower unit. If you plan to use your treadmill for running this will work!


Area #2: Frame

This isn’t the most exciting area to talk about but you will also want to buy a quality frame. For the most part treadmill frames are made from either either steel or aluminum.

Out of these two options we recommend steel. This material tends to fit together much tighter making it much quieter when in use compared to aluminum frames. Also, opinion after opinion says aluminum frames provide more of a dead feeling while steel puts a little bounce in your step.

The models frame is manufactured from steel and provides a whopping 350 pound user weight capacity.


Area #3 – Tread Belt 

The next area of importance we want to talk about is the tread belt. There are two characteristics to examine here: ply (thickness) and dimensions.

A thicker belt will last longer. This model provides a 2-ply thickness which is common to find at this price point.

The aspect of the dimensions is probably of greater importance, especially when buying the right home treadmill for runners. Obviously, as we go from walking or jogging to running stride length increases so we want a treadmill that has a long enough tread belt (running platform) to accommodate this longer stride.

We often receive questions asking what size tread belt is needed for running. Our answer is always, the average person will need at minimum a belt 55-inches long.

The LifeSpan TR4000i treadmill provides a running platform that is 60 inches long.


Area #4 – Cushion System

The is our least favorite area to rate because we believe there are certain variables. After testing and comparing cushion systems of many different treadmills, rarely is there 100% consensus on which is the most comfortable.

We believe this is because as individuals we don’t have the exact same body mechanics when we walk or run, we don’t wear the same shoes, we all do not weigh the same or have the same foot structure. What we are “trying” to say is there could be an enormous number of personal characteristics varying from individual to individual which might make one treadmills cushion system feel more comfortable when compared to another.

Sometimes it is obvious. Like if we were comparing a $500 treadmill to a $1500 treadmill. But when we are comparing two very closely matched models it’s usually hard to give a definitive answer on which is the most comfortable. Which will do a better job at protecting your joints.

What we will say the cushion system of the LifeSpan TR4000i treadmill is comparable to other top treadmills at its price point.


Area #5 – Warranty

Do yourself a favor and make sure you read over the warranty before buying any model. Not only will it show you the guarantees provided, you can actually learn a lot about the quality of the model from the warranty also.

What do we mean by the warranty can provide information on quality?

Cheaper treadmills priced under $500 these usually do not provide the best warranties but when you are paying close to $1000 or more you should expect certain guarantees.

At the near $1000 or over price range what you should expect to see in the warranty are lifetime guarantees on both the motor and frame. 

Sometimes you might see the motor having a guarante of 15 or 25 years. We would rather see a lifetime but this is OK too. However, when you see a motor guaranteed for 10 years or less this should make you question the quality of the model you are looking at.

This model provides a lifetime guarantee on both the motor and frame.

Final word – LifeSpan TR4000i folding treadmill

Viewing the quality of the motor, frame, tread belt, cushion system and warranty, overall, in these most important areas we believe this model provides quality and compares well to other options available at its price point.

If you are a runner looking for a home treadmill with its 3.25 horsepower motor and 60 inch long running platform this model is capable to handle that task.

If you are maybe looking for a less expensive option for running we have put together a list.

If you are looking for other top recommendations in the same price range:

  • PROFORM PRO 2000

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