Base
-
Model grade
17-inch wheel
Standard
Vehicle tire size guide
2025 Subaru Outback Tire Sizes
Documented factory tire sizes by trim and configuration.
2025 Model year
9 Factory configurations
2 Factory tire sizes
Factory tire sizes by trim & configuration
Each row is one documented factory configuration. Trim, package, and fitment stay in this table.
Standard Factory package
Standard is the base factory application for that trim. Factory package is a documented equipment-group or wheel-package size.
| Trim | Package / configuration | Factory tire | Wheel | Fitment |
|---|---|---|---|---|
| Base | Model grade | 17-inch wheel | Standard | |
| Limited | Model grade | 225/60 R18 100H | 18-inch wheel | Standard |
| Limited XT | Model grade | 225/60 R18 100H | 18-inch wheel | Standard |
| Onyx Edition | Model grade | 225/60 R18 100H | 18-inch wheel | Standard |
| Onyx Edition XT | Model grade | 225/60 R18 100H | 18-inch wheel | Standard |
| Premium | Model grade | 17-inch wheel | Standard | |
| Touring | Model grade | 225/60 R18 100H | 18-inch wheel | Standard |
| Touring XT | Model grade | 225/60 R18 100H | 18-inch wheel | Standard |
| Wilderness | Model grade | 17-inch wheel | Standard |
Limited
-
Model grade
225/60 R18 100H
18-inch wheel
Standard
Limited XT
-
Model grade
225/60 R18 100H
18-inch wheel
Standard
Onyx Edition
-
Model grade
225/60 R18 100H
18-inch wheel
Standard
Onyx Edition XT
-
Model grade
225/60 R18 100H
18-inch wheel
Standard
Premium
-
Model grade
17-inch wheel
Standard
Touring
-
Model grade
225/60 R18 100H
18-inch wheel
Standard
Touring XT
-
Model grade
225/60 R18 100H
18-inch wheel
Standard
Wilderness
-
Model grade
17-inch wheel
Standard
How the factory tire packages differ
The factory sizes share a 225 mm nominal width. Wheel diameter increases from 17 to 18 inches while aspect ratio drops from 65 to 60. Despite the larger wheel sizes, the documented factory tire packages remain within 0.11 inches of one another in nominal overall diameter because sidewall height decreases as wheel diameter increases.
-
- Width
- 225 mm
- Aspect
- 65%
- Wheel
- 17"
- Sidewall
- 146.3 mm
-
225/60 R18 100H
- Width
- 225 mm
- Aspect
- 60%
- Wheel
- 18"
- Sidewall
- 135.0 mm
Factory tire sizes at a glance
Nominal overall diameter, sidewall, and wheel for each documented factory size.
- Overall diameter
- 28.63"
- Sidewall
- 5.31"
- Wheel
- 18"
- Factory configurations
- 6
- Overall diameter
- 28.52"
- Sidewall
- 5.76"
- Wheel
- 17"
- Factory configurations
- 3
See the configuration table above for trim and package details.
Factory tire size dimensions
Compare the nominal geometry of the documented factory tire sizes.
| Tire size | Width | Aspect ratio | Wheel | Sidewall | Overall diameter | Circumference | Revs / mile |
|---|---|---|---|---|---|---|---|
| 225/65 R17 102H | 225 mm | 65% | 17" | 5.76" | 28.52" | 89.58" | 707 |
| 225/60 R18 100H | 225 mm | 60% | 18" | 5.31" | 28.63" | 89.94" | 704 |
The factory sizes use the same 225 mm nominal width while wheel diameter increases from 17 to 18 inches. Overall diameter stays within 0.11 inches.
Compare factory tire sizes
Featured factory-size comparison
225/60R18 28.6" diameter 5.3" sidewall 18" wheel
vs
225/65R17 28.5" diameter 5.8" sidewall 17" wheel
+0.1" diameter
Compare full dimensions →Understand the specifications
How to read tire sizes How to Read Tire Sizes Understand what 225/65R17 means. Read guide → Aspect ratio Tire Aspect Ratio Explained See how 60% and 65% change sidewall height. Read guide → Load index Tire Load Index Chart Decode load index 100 and 102 in the service description. Read guide → Speed rating Tire Speed Rating Chart Understand H and T speed-rating symbols. Read guide →
Tools for these factory sizes
FAQ
Do all 2025 Subaru Outback trims use the same tire size?
No. Trim and factory package determine which documented size was equipped. See the configuration table for the mapping.
Why does this vehicle have different factory wheel sizes?
Factory packages use more than one rim diameter. Wheel diameter is part of the documented tire size for that configuration, not a ranking of trims.
Can the factory tire sizes be swapped between Outback trims?
A size that appears on this model is a documented original-equipment application for a specific configuration. It does not confirm that the size can be fitted to every trim without checking wheels, load requirements, and clearance.
What do the service-description numbers mean?
The extra numbers and letter after the size (for example 104H) are the load index and speed rating. They are not a substitute for the size itself.
How can I compare two of these sizes?
Use the factory-size comparison on this page, or the Tire Size Comparison Calculator, to see diameter, sidewall, width, and related geometry differences.
OEM data
Factory configurations on this page come from TireReference’s verified OEM fitment dataset. Equipment can vary by trim, package, market and production configuration. Data & Calculation Standards →