LifeSpan TR4000i

The LifeSpan TR4000i Review: A Good for Life Treadmill?

If you want a reliable and comfortable treadmill to boost your fitness goals, you might want to check out the LifeSpan TR4000i Folding Treadmill.

This is one of the better folding treadmills on the market, with a powerful 3.25 HP motor, a spacious 60-inch track, and a range of programs and features to suit your needs and preferences.

You can also connect your smartphone or tablet to enjoy your favorite entertainment while you work out.

As a certified personal trainer and a long-time user of LifeSpan treadmills, I have seen the benefits and drawbacks of this model firsthand. In this lifespan tr4000i treadmill review, I will give you an unbiased and comprehensive overview of this treadmill, including its specifications, pros and cons, and tips on using it safely and efficiently.

LifeSpan TR4000i pros and cons

Strong and quiet 3.25 HP motorNo cooling fan
Spacious and cushioned 60-inch trackSmall display screen
17 preset workouts and 2 heart rate programs17 preset workouts and two heart rate programs
Foldable and maneuverable designNot very sturdy for heavy runners
Online tracking and entertainment featuresOptional Bluetooth receiver required

The treadmill’s belt is extra thick, the frame is steel, and the side rails are metal rather than plastic. Beyond the essentials, this treadmill continues to amaze, and an automated ramp, 50 training programs, and optional Bluetooth connection are noteworthy.

It has a big deck and a strong 3.25 CHP motor. It also has 50+ built-in programs, a peak speed of 12 mph, and 15 inclination and decline levels. It also comes with one of the most comprehensive warranties available on a treadmill in this price range.

The very thoughtful changeable deck doubles the life of existing LifeSpan folding treadmills. 

The Lifespan Treadmill TR4000i has a cooling fan, twin Bluetooth speakers, and an Intelli-Step, a pedometer-like function.


The TR4000i has a 3.25 CHP motor that offers additional power to accommodate heavy usage. This treadmill provides a smooth, slick motion, whether jogging or sprinting.

One of the reasons for the TR4000i’s outstanding training capabilities is its 2.5″ front and 2″ rear rollers.

Bigger rollers improve grip and minimize noise by contacting the belt more.

Overall, the TR4000i’s strong motor and rollers are outstanding.

LifeSpan TR4000i incline and speed

The TR4000i’s motor can handle its 12 mph peak speed, 13 inclination, and two decline levels.

This variation allows you to exercise speed, intervals, or steady cardio.

Lifespan TR4000i treadmill

The TR4000i’s inclination and decline settings are perfect for hiking and trail fitness. You may mix & match inclination, decline, and pace to suit your requirements.

The simple press alters inclination and pace, so the greater the elevation, the more calorie burn and muscular development.

The LifeSpan foldable treadmill’s belt is 60 inches long, enabling runners of all heights to run freely.

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Console & Display

It has a 7″ full-color touchscreen with three dashboard perspectives. You may monitor, measure, or graph views.

Lifespan TR4000i Display

It’s wonderful to see your training factors like speed, time, distance, and inclination, and you also get to see calories, heart rate, steps, and elevation gained.

It contains five Quickset speed and five Quickset inclination buttons for rapid adjustments in incline or speed.

You can place your phone or tablet in the media holder. But this may obscure your LCD console’s vision.

Easy to Fold & Move

Overall, LifeSpan has created a foldable treadmill for runners that is durable and affordable.

To save floor space, the treadmill’s deck may be folded hydraulically between sessions.

LifeSpan-TR4000i folded

It has a 9-inch step-on height.

Running Track

A 22″ x 60″ deck is comfortable for people of all heights.

Due to soft landings, exercise-related injuries are reduced by the deck’s eight compression shock absorbers.


The TR4000i is gentler on joints than outdoor exercise and is ideal for older or injured athletes.

Intelli-Step on the deck acts as a pedometer, automatically counting your steps. LifeSpan Fitness’s

An additional Intelli-Guard safety feature stops the treadmill twenty seconds after you walk off the treadmill.

A thick two-ply track is intended for durability and increased cushioning. An inch-thick deck also decreases the noise.

Preset Programs

The Lifespan Fitness TR4000i includes 50+ predefined training regimens, including races, fitness tests, customizable personal programs, and multiple dashboard view options. This treadmill is designed to help you achieve your fitness goals.

Its multitude of programs will keep you entertained. The training programs comprise heart rate programs, user-defined programs, preset programs, and a 5k/10k race. It also includes tests like Rockport Fitness Test and Navy Fitness Test.

Weight reduction, cardiac fitness, interval, continuous heart rate management, sports training, and healthy living are fitness goals.

The Rockport Fitness Test times a 1-mile walk to assess your fitness, and exercise physiologists created it to help beginners track their development.

The Navy Fitness Test is appropriate for experienced runners or athletes. The Navy uses it, along with push-ups and sit-ups, to assess your fitness.

Weight & Weighing Capacity

The TR4000i’s structure is strong enough to handle people weighing 350 lbs. The TR4000i weighs 239.5 pounds.

It is not very compact when unfurled. However, when folded, it saves a lot of room. This machine’s collapsible and heavy-duty structure is impressive.

LifeSpan TR4000i Features and Specifications

Motor3.25 HP continuous-duty DC motor
Speed0.5 to 12 MPH
Incline13 levels, up to 13%
Decline2 levels, down to -2%
Running surface22 x 60 inches
Belt2.2 mm thick
Deck1-inch phenolic with 8 compression shocks
Display7-inch full-color touchscreen
Programs20 preset, 2 heart rate, 2 custom
Heart rate monitorContact sensors and wireless receiver (chest strap sold separately)
AudioDual Bluetooth speakers and aux-in port
Cooling fanNo
Folding mechanismHydraulic shock and four wheels
Dimensions73″L x 34.5″W x 55.5″H(unfolded), 40.5″L x 34.5″W x 65.5″H(folded)
Weight239.5 lbs
Max user weight350 lbs

It syncs with mobile applications, plays MP3s, charges gadgets, and securely displays your tablet computer.

The Lifespan TR4000i manual details the treadmill, including its installation and maintenance.

The trainer’s feature highlights include a power incline, wireless app sync with fitness applications, a music system, and a tablet holder.

Your workout data is saved on a USB disc. You may use your analytics to track your progress, schedule exercises, and more.

A Bluetooth receiver automates exercise data transmission. Fitbit, MyFitnessPal, and other fitness monitoring applications are compatible.

A media holder allows you to display your tablet while exercising.

A wireless or touch sensor TR4000i can detect your pulse.

A fan keeps you cool while you practice.

IntelliGuard is a safeguard that pauses if you leave the treadmill for 20 seconds.

Wireless connections are great for streaming music or synchronizing fitness data. It includes wireless chest straps and armbands.

Use the LifeSpan Fitness Club’s website to chart your exercise data wirelessly or store it on a thumb drive.


Today’s company price is $2199.99, but it is frequently available for a lesser price. Sometimes even at $ 1499.00


Bad positioning of media holders.


There is a lifetime guarantee on the frame and motor: five years on components and two years on labor.

Extended warranties of three and five years are offered for 3 and 5 years. There is also a 30-day money-back guarantee on LifeSpan treadmills.

With guarantees like these, LifeSpan Fitness clearly believes in its TR4000i.

The TR4000i is built to last, outperforming the market’s conventional guarantee offers.


The LifeSpan TR4000i is unique, and it has a foldable frame, a large track, and excellent quality.

It has a great warranty and is reasonably priced.

It’s also lovely that LifeSpan Fitness has included proprietary Rockport and Navy Fitness Tests in its TR4000i.

All these features do make LifeSpan TR4000i a strong contender in its category.


How long do treadmills last?

A short answer is:
The lifespan of a treadmill depends on its quality, usage, and maintenance. On average, treadmills can last 7 to 12 years but may need regular cleaning, lubrication, and alignment to function properly.

Is LifeSpan a good treadmill brand?

LifeSpan is a good treadmill brand offering high-quality, durable, and versatile home and light commercial machines. LifeSpan also provides online tracking and personalized workouts through its LifeSpan Fitness Club.

How do you unfold a treadmill LifeSpan?

Depending on the model, the lock latch may be on the upright or the side of the deck. You can use your hand or foot to press the lock and then gently lower the deck until it rests on the floor.

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