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ProForm Performance 400i Review

Quick Summary

Sale priced at $599 and updated for 2016, the ProForm Performance 400i is now one of the cheapest treadmills with an iFit-enabled console.

It offers an affordable way for walkers to exercise indoors while virtually touring the world with Google Maps™ workouts.

Is it your best treadmill option?

Decide with help from our honest treadmill review below.


Model ProForm Performance 400i

Our custom rating considers all of the treadmill's features, specs, warranties, and 100's of user & expert reviews, to save you time!

List Price

Suggested retail price, typically higher than the price you'll pay with our recommended retailers.

Best Price

Since prices change daily, this link goes to our preferred retailer for the current best price. Note: MSRP stands for Manufacturer's Suggested Retail Price.


Treadmill Speed is measured in Miles Per Hour (mph). Average running speed is 5-9 mph.

0 - 10 mph

Treadmill Incline measures the angle of the deck, and how steep it is relative to the floor (0% is flat, and 15% is like a steep hill).

0 - 10%

The Treadmill Motor is what turns the belt as you run. We recommend at least 2 HP (Horsepower) motors, 2.5+ HP for jogging, and 3.0+ HP for running.

2.5 CHP

Treadmill Deck dimensions are measured in inches: Width x Length. The wider and longer the deck, the safer it is (55-60 inches long recommended for running).

20" x 55"

The Treadmill Belt is the surface you run on. The thicker the belt, the less impact on your joints. At least 2-ply (1 inch) recommended.

ProShox™ Lite Cushioning

Some treadmills are designed to conserve space by folding up. This is a convenient option, but some features might be reduced.


Treadmill Programs allow you to complete a workout with changing speeds and inclines, without changing anything manually.

Max. Weight

Treadmill Max User Weight is the amount of weight, in pounds (lbs), that it can safely support, which can represent durability.

300 lbs
Heart Rate

Heart Rate programs allow you to track how many times your heart is beating per minute (bpm), and some control the workout for you.

Dual-Grip EKG Monitor

Dimensions are included to help you figure out if this treadmill will fit properly (Length x Width x Height and Height x Depth).

73" x 36" x 60"

Treadmill Display refers to the screen you'll look at to monitor workouts. LED and LCD displays are similar to TV screens.

Round Watts LED Display
Cooling Fans

Treadmill Cooling Fans are designed to help keep you cool during an intense workout.

Accessory Tray

Some treadmills include an accessory tray for holding items such as water bottles, wallets, keys, or MP3 players like iPods.


Treadmills that include a sound system allow you to listen to your MP3 player/iPod through built-in speakers (no headphones).

Quick Controls

Quick Controls allow you to select speed, incline and even workout programs with the touch of a button (usually on the handles).


The warranty is a very important part of your investment. The longer the warranty, the longer you can get free/discounted repairs by the manufacturer.

Frame: Lifetime
Motor: 25 Years
Parts: 1 Year
Labor: 1 Year

Rating: 88.5%

Our Rating

Rating: 88.5/100. The ProForm Performance 400i is an entry level trainer in ProForm’s budget treadmill series. Specs include an iFit-enabled console, a 2.5 CHP motor and a 55″ track with maximum 10% incline. The machine is designed for walkers, not runners. It’s a step up from the Performance 400c, which requires the separate purchase of an iFit monitor. The advantage of the treadmill in this review is that iFit programming can be shown on your tablet computer. This treadmill has a one-year parts warranty.


  • Standard track size for walking (20″ x 55″)
  • Power incline (10%)
  • iPod-compatible (2-inch speakers)
  • 18 workout apps
  • Watts readout
  • iFit-enabled
  • Contact pulse monitor
  • Tablet computer holder
  • SpaceSaver (Foldable)


  • Thin track
  • Small track rollers
  • No wireless heart rate monitoring
  • Slow customer service
  • Short warranties


The ProForm Performance 400i is part of a budget treadmill series that also includes the Performance 400c, 600c and 600i. The “i” in a model name indicates that the treadmill is iFit-enabled; it can connect with your tablet computer to show iFit programming. The 400-level treadmills have 55-inch tracks and the 600-level treadmills have 60-inch tracks.

The Performance 400i is designed for walkers. To boost calorie burn it has a 10% maximum incline, which can be controlled electronically by built-in workout programs, iFit workouts or buttons on the console. Although full price is $999 this treadmill typically sells for $599 including delivery.

Workout Programs

Plenty of workout guidance is available with this budget treadmill. The Performance 400i has 18 workout programs designed by a certified personal trainer. Each program has a set time and can automatically alter the treadmill’s speed and incline.

For infinite options you can use the Performance 400i with iFit. To do so, you’ll need a tablet computer and an iFit subscription. The tablet computer can be securely attached to the treadmill and easily reached during workouts. With iFit you can get a new and customized workout every day, stream high definition video workouts, and virtually experience around-the-world training with Google Maps™. Choose from popular routes or specify any path you please. The ProForm Performance 400i will adjust its 10% max incline to simulate the landscape! Throughout the workout you’ll get an interactive Google Street View.

Treadmill Features

Exercise data are shown on the Watts LED, a new ProForm display for 2016. Looking something like a car’s speedometer, the Watts LED has a circular readout that shows your energy output. Inside the circle is a window that can show the elapsed time, your incline level and other stats.

Besides the iFit setup, a favorite feature on the Performance 400i Treadmill is its 10% incline. This automated ramp allows faster calorie burn and extra muscle toning. The steeper the incline, the faster your burn rate.

The tread track is the standard length and width for walkers’ treadmills (55″ x 20″). It’s supported by the same ProShox™ cushioning that’s featured on ProForm treadmills in every price category.

For digital entertainment an iPod-compatible port and 2-inch speakers are built into the console. As described above, the ProForm Performance 400i also has a holder for your tablet computer.

In between workouts you can easily make the treadmill compact with help from SpaceSaver EasyLift™ Assist. Just push on the deck to fold it upward and reclaim your space.

Warranty & Guarantee

The ProForm Performance 400i Treadmill warranty includes:

– Frame: Lifetime
– Deck: Lifetime
– Motor: 25 years
– Parts: 1 Year
– Labor: 1 year

ProForm provides a 30-day money back guarantee on its treadmills.


The Performance 400i is one of ProForm’s cheapest treadmills, but its quality could satisfy walkers. It’s the most feature-rich treadmill you’ll find for $599. If you can afford to spend more then we recommend checking out some $999 alternatives, which generally offer better value in the long run.