ProForm Performance 400i Treadmill Review

As a replacement to the hugely popular ProFrom 505 CST the new Performance 400i treadmill reviewed today has much to live up to.

Designed for use in a home gym or even a standalone piece if you have a spare space, not that you will need much as this machine folds up to a nice compact form.  Built for daily use this machine is robust and capable of years of daily use, even as you become stronger and faster at running.  If you are looking for a full featured treadmill that wont cost a small fortune the Performance 400i is well worth consideration

To ensure that we cover everything we will also compare it against some of its competitors at the same price (around $600) in particular the Horizon Fitness T101-04 Treadmill.

With modern technology and high quality materials ProFrom seem to have set out to build a machine that will last, and feel good as you use it.  This is also a folding treadmill so its easy to store when not in use.

The ProForm Performance 400i Treadmill Review in Depth: powering your run

At the heart of all treadmills is the motor, having a strong reliable motor is vital for long term running and enjoyment of your treadmill.  Packed away inside the 400i is a reasonably powerful 2.5CHP motor, this will deliver plenty of power to keep you running at speed up the builtin 10% incline, even if you are pushing to the 300lb weight limit of the machine.

Performance 400i Treadmill Base

More than anything else its the running platform that will determine the quality of your workout.  Profrom have put a lot of thought into this and have coupled a number of technologies to make this as comfortable and quiet as possible:

The first is the advanced cushioning found under the base.  This sucks up the big thumps as you run, preventing the shock transmitting through your legs and potentially causing injury.

Next up comes the belt itself, this has been designed to provide great traction for your feet, it also provides support as you run.

Overall you have a good sized running surface 20″ wide and 55″ long.  The running surface has increased by 5″ over the predecessor and is very welcome as we found the old machcine a little tight on space if you were taller!  If you do want a longer machine then the Proform Power 995i has a 60″ running pitch.

To add an extra dimension to your run, the bed inclines up to 10 degrees.  This is great for working out different muscles in your legs and is perfect for toning.

Workouts and Technology

If you are a fan of gadgets then you are in luck. There are some great, and easy to use features built into the 505 CST.  I really like the iFit live system that is available.  This charts your workout on google maps and lets you see where you are running on the map. Its  a great feeling to see the route you are running!    Imagine running through the streets of the Boston Marathon or up in the hills?

Ifit Enabled

To enable the iFit you will need to buy the iFit module which costs about $100, but it will add a huge extra dimension to your workout that if you are like me keeps me going back again and again.


On to the console, this is what you will be looking at for hours on end.  And I have to say it looks great

At the center of the Proform 400i are all the controls and settings needed to make your workout run smoothly and simply.  The buttons are comfortable and easy to access, its really easy to workout which each one does.


Folding Treadmill

The final feature worth mentioning is that this treadmill can actually fold up.  This makes it a great space saving option.  After your workout simply raise the treadmill base up, and store it away on the transport wheels.

Alternatives to the Proform Power 400i Treadmill:

Product nameRating Price
Horizon Fitness T101-04 Treadmill Horizon Fitness T101-04 Treadmill
NordicTrack T 6.5 S Treadmill NordicTrack T 6.5 S Treadmill
Sunny Health & Fitness Treadmill Sunny Health & Fitness Treadmill
Weslo Cadence R 5.2 Treadmill Weslo Cadence R 5.2 Treadmill

Key Proform 400i Treadmill Features

  • Folding for space saving storage
  • Works seamlessly with iFit Live technology
  • 300lb weight capacity
  • Hand grip mounted heart rate monitor


  • Maximum 300 pound weight capacity
  • Sturdy construction, no flimsy feeling
  • Built in sound system, with iPod and MP3 port
  • Huge 6-inch backlit display


  • Does not truly fold up completely vertical
  • Poorly positioned on/switch

What are people saying about the Proform 400i Treadmill online?

During our background research we found this to be an extremely popular treadmill.  It scores a great 4 stars on most sites including Amazon.

The reason for the high scores is its strong feel (especially considering it costs less than $1000).  The construction quality is excellent.  Proform really seemed to have upped their game when it comes to build quality.

Click here to read more user reviews now on Amazon>>>

Our Verdict on the Proform Performance 400i Treadmill:

While some users felt that it could be a little noisy.  We did not notice this, this was probably due to the set up, we always use a treadmill mat to ensure that the machine does not slide on the floor and dampens the sound down.

Given the overwhelming support for this machine we cannot but recommend it.  With a price tag of less than $700 its a bit of a steal!

If you want to start your running journey, then the Proform Performance 400i  treadmill is a good quality, low cost way of beginning.

ProForm PFTL59515 Performance 400i Treadmill Review Summary:

  • 25 chp Mach Z motor, 20 x 55 tread belt, proshox cushioning, space saver design
  • 19 inch length
  • 18 workout Apps, grip Pulse EKG heart RATE monitor, this heavy-duty treadmill accommodates up to 115 Kg.
  • Compatible music port for IPod, IPod is a trademark of Apple, inc, registered in the US And other countries; IPod not included
  • The ProForm performance 400 Treadmill is protected with a Lifetime frame Warranty, 25-year motor Warranty and 1-Year parts and Labor Warranty