The recommended tire pressure for inflating your Subaru Ascent is between 32 and 36 psi for both the front and rear tires. But it is important to verify in your vehicle’s owner’s manual or the little tag attached to the driver’s side door frame.
There are exceptional cases where you can bend the rule.
For example, it is best to use between 15 and 20 psi if you use off-road tires on your Subaru Ascent for the best performance as you do trail running.
In the same manner, inflating tires designed for extreme weather conditions will require unique tire pressure requirements. For example, if you use seasonal tires on your Subaru Ascent, you wouldn’t want to use the recommended PSI for standard tires.
We will look at these factors in detail throughout the rest of this post. Before then, here is a list of the recommended tire pressure for the sport utility vehicle based on the model year, tire size, and trim model.
Table of Contents
Tire Pressure Table For Subaru Ascent Models And Tire Size
| Recommended Tire pressure | |||
| Subaru Ascent Year Model | Tire Size | Front tire | Rear tire |
| 2022 | 245/50R20 102H | ||
| 245/60R18 105H | |||
| 2021 | 245/50R20 102 | 33 psi | 33 psi |
| 245/60R18 105H | 35 psi | 35 psi | |
| 2020 | 245/50R20 102H | 33 psi | 33 psi |
| 245/60R18 105H | 35 psi | 35 psi | |
| 2019 | 245/50R20 102H | 33 psi | 33 psi |
| 245/60R18 105H | 35 psi | 35 psi | |
| Ascent | 245/60R18 105H | 35 psi | 35 psi |
| Ascent Limited | 245/50R20 102H | 33 psi | 33 psi |
| Ascent Onyx Edition | 245/50R20 102H | ||
| Ascent Premium | 245/50R20 102H | 33 psi | 33 psi |
| 245/60R18 105H | 35 psi | 35 psi | |
| Ascent Touring | 245/50R20 102H | 33 psi | 33 psi |
Again, the company has attached a sticker detailing tire size and psi information to the driver’s side B pillar door jamb of your Subaru Ascent.
Even pages 448 and 449 of the Ascent owner’s manual detail recommended tire pressure.
Yet, many folks will tweak that a little for personal preference.
But if you prioritize performance and comfort for your standard tires, you’ll want to stick to the manufacturer’s specification on the door jamb sticker.
Inflating Your Subaru Ascent Tires During Winter
Vehicles like the Subaru Ascent lose around 1 psi of air pressure for every 10-degree drop in temperature. So the recommended tire pressure to drive with will differ from the standard tires.
It is best to inflate the tires on your Subaru Ascent with 3 to 5 psi more than the suggested tire pressure settings during winter to compensate for the pressure drop.
While it is not recommended to over-inflate the tires beyond the psi on the tire’s sidewall, winter conditions have unique psi needs. Meanwhile, keep an eye on the tire pressure in colder times to ensure they are within the right inflation level as you ride on snowy or icy streets.
Your Subaru Ascent year model will also include more details on the recommended winter psi for the tires.
How To Find The Right Tire Pressure For Your Subaru Ascent
To find the correct tire pressure for your Subaru Ascent, as recommended by the automaker, check your owner’s manual or the small sticker on the side of the driver’s door or door jamb.
The tire inflation recommendation is explained in psi (pounds per square inch), bar, or kPa (kilopascals. You can also take cues from the inflation recommendation detailed on the tire’s sidewall.
But remember that the one shown here is the maximum air pressure your tire can hold, and it’s not safe to pump your tires to that level or beyond.
Subaru Ascent Tire Pressure Display
Another important thing about the tire pressure of the Subaru Ascent is how you can check the tire pressure on a Subaru dashboard.
Step 1: Locate the switches on the lower left-hand side of your steering wheel (most Subaru models have the switches in that area, including the Ascent).
Step 2: Take a look at the combination meter display and then use the switches to toggle up or down
Step 3: As you toggle the switches, it changes the vehicle information displayed on the dashboard
Step 4: Toggle through until you get to the display that shows PSI information for your tires
Step 5: There may be no PSI value displayed. But as you get going, it will show the tire pressures individually.
It doesn’t show value initially because it goes into sleep mode to conserve your TPMS battery life whenever your car sits for a while.
How To Change Subaru Ascent Tire Pressure Monitor From Kpa To Psi
Do you want to change the tire pressure display on your Subaru Ascent’s dashboard from kPa to psi?
Step 1: Use the arrows on the steering column of your vehicle to toggle through the menu on the combination metre display.
Step 2: Stop at “pull and hold the I/SET switch.”
Step 3: “Settings” will pop up on your screen. Then select “screen settings.”
Step 4: locate the “tire pressure units” and select the i/SET button.
Step 5: Locate “psi” and press the i/SET button again.
Step 6: You will see the “setting complete” alert on the combination metre display. Then return to the “tire pressure units” screen. You can wait for the screen to automatically return to the “change settings” screen or go back.
Step 7: Confirm the settings, and it’s done.
When Should I Get My Subaru Ascent Tires Rotated?
The essence of a tire rotation in vehicles is to ensure the tires perform to their maximum lifespan and that there’s even tread wear.
According to Subaru, you should have your tires rotated every 6,000 miles. An easy way to observe this is to do it along with your oil change.
Meanwhile, Subaru Ascent tires are expected to last between 30,000 and 50,000 miles if properly cared for.
But before then, you can always double-check if the tires are wearing out and need replacement by checking the tread life. To do this, insert a U.S. penny headfirst, with Lincoln facing you. A sign that the tire is bad and needs replacement is if you can see the very top of Lincoln’s head.
Wrapping Up
Tire pressure is one of the most important aspects of maintaining the Subaru Ascent lineup. When you drive with a tire pressure lower than the factory-recommended psi, you risk experiencing poor handling, high fuel consumption, and quick wear.
On the other side of the spectrum, tires inflated above the factory recommendation can result in poor braking or, even worse, a blowout at high speeds.
All these can be prevented if you stick to the automaker’s recommendation as outlined on the sticker attached to your Ascent’s driver’s side door frame.
The bottom line, however, is that 33 psi to 35 psi is the best tire pressure to use for any Subaru Ascent model.
It’s the recommendation set by the gross vehicle weight rating (GVWR) and the model’s original equipment tire size.