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Precor 9.31 Review


Precor 9.31 Treadmill

The Precor 9.31, retailed at $3,999, is one of the more expensive treadmills on the market.

Unlike a lot of other treadmills available, the Precor 9.31 does not have a lot of toys as even common entry-level features like iPod dock, built-in speakers, iFit Live compatibility, etc are strangely absent.

However, the Precor 9.31 is designed with some sophisticated technology and the commercial-grade parts are promised by the manufacture to last.

It is clear, then, where Precor has decided to place their time and focus with the 9.31 treadmill.

Learn more by reading our full Precor 9.31 treadmill review below…


Wondering if the Precor 9.31 is your best bet? Compare it to similar treadmills at the pages below:

Here are some other great treadmills you might be interested in:

Video Overview of the Precor 9.31 (and the Precor 9.33):


Model Precor 9.31

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.

0.5 - 12 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 - 15%

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.

3.0 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).

22" x 56"

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.

Ground Effects Impact Control

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.

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.

Telemetry & Chest Strap

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

79" x 34" x 56"
Weight: 335 lbs
Rollers: 2.5"

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

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
Parts: 10 Years
Labor: 1 Year

Rating: 83.9%

Full Review

Quick Summary
Rating: 83.9/100. Designed for walkers and joggers, Precor 9.31 adjusts belt speed to foot speed — fully complementing and supporting your natural stride — while suspension system cushions impact and stabilizes lateral movement, reducing impact on joints, increasing comfort and minimizing fatigue.

– Advanced design adjusts belt speed to foot speed
– Easy-to-read console with exercise data
– Advanced diagnostics with SmartRate monitoring
– Commercial-grade suspension and cushioning system
– Powder coating process adds durability to frame
– Quiet steel crowned drive system

– No warranty coverage on motor
– Bulky and non-folding treadmill (weighs 335 lbs)
– Not compatible with iPods & iFit Live


The Precor 9.31 is easily not the flashiest treadmill on the market, but it is dependable.

Precor has paid a lot of attention to the performance of the treadmill, and it shows with commercial-grade production, including a 3.0 CHP motor, 22″ x 56″ running surface, built-in diagnostics and low maintenance steel crowned drive system.

The Precor 9.31 treadmill is also equipped with some of the latest technology, including Integrated Footplant Technology and the SmartRate program.

While many treadmills are becoming more compact with folding options, the Precor 9.31 is an old-school treadmill that would prefer being extremely durable and quiet during operation.

Workout Programs

For a price of just under $4,000, you would expect a few more pre-defined workout programs on the Precor 9.31 which only provides eight.

The treadmill is also not compatible with iFit workout technology; however SmartRate is a nice alternative.

The program shows your heart rate in relation to the target zone for weight loss and cardio training when using an optional wireless heart rate monitor (included with purchase).

The 9.31 treadmill also has built-in diagnostics which allow you to set weight, age, workout stats, interval speeds, and inclines for each user.

While exercising the bio-feedback center provides dedicated feedback on heart rate and calories.

The feedback in regards to your workout is stellar, we just wish there were a few more pre-defined workout programs.

Treadmill Features

If you are not overly dependent on a number of the latest electronics, the Precor 9.31 will suit you just fine.

As previously mentioned, the 9.31 treadmill has no mp3 port, built-in speakers, iFit Live compatibility, or any of the other latest electronic inclusions to the market.

The display system is basic, yet easy to read with QuickStart controls and a workout log.

Precor has dedicated a lot of time on this treadmill to the adjustable cushioning system which is really innovative. The Integrated Footplant Technology not only cushions your joints, but also matches belt speed with foot speed to optimize performance.

The Precor 9.31 treadmill also has a low maintenance steel crowned drive system, which eliminates a lot of useless noise during operation. The multi-ply belt, phenolic laminate deck, and powder-coasting process are all steps Precor took to stretch the lifespan of the trainer.

Stay cool and comfortable during the workout with a built-in cooling fan.

Warranty & Guarantee

The Precor 9.31 treadmill warranty and guarantee includes:

– Frame & Welds: Lifetime
– Parts & Wear Items: 10 Years
– Labor: 1 Year

Questions? Contact 1-800-786-8404 (North America and Latin America).


The Precor 9.31 is a really well constructed treadmill that has three of the most important yet most overlooked qualities: it’s quiet, rides smooth and optimized for comfort.

Still shopping? Compare the 9.31 to other Precor treadmills.