When it comes to maintaining your 2017 Subaru Forester’s optimal performance and safety, understanding the correct tire specifications isn’t just important—it’s essential. We’ve seen countless drivers struggle with tire replacements simply because they weren’t sure about their vehicle’s exact requirements.
Your 2017 Forester came equipped with exact tire dimensions that were carefully engineered to complement its all-wheel-drive system and handling characteristics. Getting the wrong size can affect everything from fuel economy to traction control performance, potentially compromising your driving experience.
We’ll break down everything you need to know about your 2017 Subaru Forester’s tire size, including the standard specifications, acceptable alternatives, and what those numbers actually mean for your daily driving. Whether you’re shopping for replacements or considering upgrades, this guide will ensure you make the right choice for your Forester.
2017 Subaru Forester Standard Tire Size Specifications
The 2017 Subaru Forester comes equipped with 225/60R17 tires as the standard factory specification across all trim levels. These dimensions represent a carefully engineered balance between ride comfort, fuel efficiency, and all-terrain capability that defines the Forester’s performance characteristics.
| Specification | Standard Size | Alternative Size |
|---|---|---|
| Tire Width | 225mm | 215mm |
| Aspect Ratio | 60 | 65 |
| Wheel Diameter | 17 inches | 16 inches |
| Complete Size | 225/60R17 | 215/65R16 |
Breaking down the 225/60R17 specification reveals exact measurements that directly impact your Forester’s operation. Width measures 225 millimeters from sidewall to sidewall, providing adequate contact patch for traction without compromising fuel economy. Aspect ratio of 60 means the sidewall height equals 60% of the tire width, creating 135mm of sidewall height for optimal ride quality.
Construction marked by the “R” indicates radial tire design, which offers superior heat dissipation and longer tread life compared to bias ply alternatives. Diameter specification of 17 inches matches the standard wheel size found on all 2017 Forester models, ensuring proper fitment with factory suspension geometry.
Load index and speed ratings for the standard tire size typically range from 99H to 103H, depending on the exact tire manufacturer. These ratings indicate the tire can safely carry between 1,709 and 1,929 pounds per tire at maximum speeds up to 130 mph, exceeding the Forester’s typical operating requirements.
Tire pressure recommendations for the 225/60R17 size remain consistent at 33 PSI for both front and rear positions when cold. This pressure setting optimizes the tire’s contact patch distribution and maintains the intended ride characteristics that Subaru engineers designed into the Forester’s suspension system.
OEM Tire Size Options by Trim Level
Different trim levels of the 2017 Subaru Forester come equipped with distinct tire sizes that match their exact performance characteristics. The manufacturer designates two primary OEM tire configurations based on the trim level’s features and target audience.
Base and Premium Trims
Base and Premium trim Foresters use 225/60R17 tires as their standard factory specification. These tires mount on 7Jx17 wheels with a 48mm offset (ET), providing the optimal balance for everyday driving conditions. The 225/60R17 configuration offers enhanced ride comfort through its taller sidewall profile, which absorbs road imperfections more effectively than lower profile alternatives.
Drivers of Base and Premium trims benefit from improved fuel economy characteristics inherent in the 17-inch wheel setup. The larger sidewall also contributes to better off-road traction capability, aligning with the Forester’s versatile design philosophy. Cost considerations favor this tire size, as 17-inch replacement tires typically carry lower price points compared to 18-inch variants.
Limited and Touring Trims
Limited and Touring trim models feature 225/55R18 tires mounted on 7Jx18 wheels with identical 48mm offset specifications. The 2.0XT Premium and Touring versions specifically incorporate this larger wheel diameter to complement their enhanced performance capabilities. These 18-inch tires provide sharper handling response through reduced sidewall flex during cornering maneuvers.
Performance oriented drivers appreciate the improved steering precision that comes with the lower profile 225/55R18 configuration. The shorter sidewall height translates to more direct road feedback and enhanced stability at highway speeds. Visual appeal also increases with the larger wheel diameter, creating a more aggressive stance that matches the higher trim levels’ premium positioning.
| Trim Level | OEM Tire Size | Wheel Specification |
|---|---|---|
| Base & Premium | 225/60R17 | 7Jx17 ET48 |
| Limited & Touring | 225/55R18 | 7Jx18 ET48 |
Understanding Tire Size Numbers and Measurements
Reading tire specifications becomes straightforward once we decode the standardized format used across the automotive industry. Tire manufacturers express dimensions using the pattern Width/Aspect Ratio R Rim Diameter, which provides all essential measurements in a compact code.
Width represents the tire’s section width measured in millimeters from sidewall to sidewall. Our 2017 Forester uses tires measuring 225 mm wide, creating the contact patch that connects your vehicle to the road surface.
Aspect Ratio indicates the sidewall height as a percentage of the section width. Values of 55% and 60% appear on Forester models, where a 55% ratio creates a shorter sidewall compared to 60%. Lower aspect ratios typically provide enhanced handling response but may reduce ride comfort over rough surfaces.
R designation confirms radial construction, the standard tire design that layers steel belts and fabric plies perpendicular to the tread direction. Radial tires deliver superior fuel economy and tread life compared to older bias-ply designs.
Rim Diameter specifies the wheel size in inches that accommodates the tire. Our Forester models use either 17-inch or 18-inch wheels depending on the trim configuration.
Applying this knowledge to the 225/55R18 specification found on 2.0XT Premium and Touring trims reveals:
| Measurement Component | Value | Description |
|---|---|---|
| Tire Width | 225 mm | Section width across the tread |
| Aspect Ratio | 55% | Sidewall height percentage |
| Construction | Radial | Steel belt and fabric ply design |
| Wheel Diameter | 18 inches | Rim size compatibility |
Converting the aspect ratio calculation shows us the actual sidewall height: 225 mm × 0.55 = 123.75 mm. This measurement affects ride quality, handling characteristics, and speedometer accuracy when compared to alternative tire sizes.
Performance Impact of Different Tire Sizes
Understanding how different tire sizes affect your 2017 Subaru Forester’s performance helps you make informed decisions about replacements or upgrades. Each tire size offers distinct characteristics that influence your vehicle’s behavior on various road conditions.
Fuel Economy Considerations
Rolling resistance remains the primary factor affecting fuel economy rather than tire size variations between the 225/55R18 and 225/60R17 options. Both sizes maintain similar contact patches with the road surface, resulting in comparable fuel consumption patterns. The 2017 Subaru Forester achieves up to 24 mpg in city driving and 32 mpg on highway conditions regardless of which standard tire size you choose.
Tire compound and tread design create more important impacts on fuel efficiency than dimensional differences. Low rolling resistance tires in either size can improve your Forester’s overall fuel economy by reducing the energy required to maintain forward motion. Weight differences between the two tire sizes are minimal and don’t substantially alter the vehicle’s fuel consumption characteristics.
Handling and Ride Quality
The 225/55R18 tires deliver enhanced handling precision through their lower profile design, which reduces sidewall flex during cornering maneuvers. This configuration improves stability and steering responsiveness, particularly when handling curves or changing lanes at highway speeds. But, the shorter sidewall transmits more road imperfections directly to the cabin, resulting in a firmer ride quality.
Conversely, the 225/60R17 tires provide superior ride comfort due to their taller sidewall construction, which absorbs road irregularities more effectively. The increased sidewall flexibility cushions impacts from potholes, expansion joints, and rough pavement surfaces. This comfort advantage comes with slightly reduced handling sharpness, as the taller sidewall allows more flex during aggressive driving situations.
Braking performance varies between the two sizes, with the 225/55R18 tires offering marginally better stopping distances on smooth surfaces due to their stiffer sidewall construction. The 225/60R17 tires maintain consistent braking performance across various road conditions while providing better traction on uneven surfaces through improved ground contact conformability.
Alternative Tire Size Options for the 2017 Forester
We’ve identified 215/65R16 as a viable alternative tire size for the 2017 Subaru Forester, though it’s less common than the standard specifications. This alternative sizing offers unique benefits for exact driving conditions and preferences.
Plus Sizing Opportunities
Plus sizing transforms your Forester’s appearance and performance by moving from the standard 17-inch wheel to an 18-inch wheel with 225/55R18 tires. Enhanced handling becomes immediately noticeable as the lower profile design reduces sidewall flex during cornering maneuvers.
Aesthetics improve dramatically with plus sizing, creating a more aggressive stance that appeals to performance-oriented drivers. The larger wheel diameter fills the wheel wells more effectively, eliminating the gap that some owners find visually unappealing.
Ride comfort may decrease with plus sizing due to the reduced sidewall height of the 225/55R18 configuration. The shorter sidewall provides less cushioning against road imperfections, transmitting more vibrations directly to the cabin.
Speedometer accuracy remains consistent when plus sizing, as the overall tire diameter stays nearly identical between the original and upgraded configurations. This maintains proper calibration of your Forester’s electronic systems without requiring recalibration.
Winter Tire Considerations
Winter conditions in heavy snow areas require dedicated winter tires for optimal safety and traction performance. All-season tires like the Falken models provide adequate performance in moderate snow conditions but can’t match the specialized compound and tread design of winter-exact tires.
Dedicated winter tires offer superior traction in deeper snow due to their softer rubber compounds that remain flexible in freezing temperatures. The specialized tread patterns feature deeper grooves and more aggressive siping that enhances grip on ice and packed snow surfaces.
Temperature performance becomes critical below 45°F, where winter tire compounds maintain their flexibility while all-season tires begin to harden and lose effectiveness. The rubber compound difference directly impacts braking distances and cornering stability in cold weather conditions.
Consult your owner’s manual for exact tire size and type recommendations for winter conditions, as Subaru provides detailed guidelines for seasonal tire selection. These manufacturer specifications ensure compatibility with your Forester’s all-wheel-drive system and electronic stability controls.
Best Tire Brands and Models for 2017 Subaru Forester
Several manufacturers produce exceptional tires that match the 2017 Forester’s 225/60R17 and 225/55R18 specifications. Goodyear stands out among tire brands for delivering reliable all-season performance across both tire sizes, offering drivers excellent durability and traction control that complements the Forester’s AWD system.
Michelin produces premium tires known for extended tread life and superior handling characteristics specifically designed for SUVs like the Forester. Their all-season compounds provide consistent performance across varying weather conditions while maintaining fuel efficiency ratings that align with the vehicle’s economy targets.
Bridgestone offers tire models with exceptional grip capabilities and robust construction that performs well in both on-road and light off-road situations. Continental tires feature advanced all-weather technology that enhances the Forester’s existing all-wheel-drive capabilities, providing drivers with confident traction in diverse conditions.
Pirelli and BFGoodrich round out the top manufacturer options by balancing performance characteristics with comfort features. These brands produce tires that maintain the proper contact patch distribution while supporting the vehicle’s 33 PSI pressure requirements.
| Tire Brand | Key Strengths | Performance Focus |
|---|---|---|
| Goodyear | All-season versatility, durability | Traction and longevity |
| Michelin | Extended tread life, handling | SUV-exact design |
| Bridgestone | Grip performance, construction | On/off-road capability |
| Continental | All-weather technology | AWD system compatibility |
| Pirelli | Performance balance | Comfort optimization |
| BFGoodrich | Versatile applications | Mixed terrain capability |
Forester drivers typically prioritize all-season tires for year-round versatility when selecting replacement options. All-terrain tires become the preferred choice for drivers who frequently navigate off-road conditions or require enhanced traction on unpaved surfaces.
Fuel efficiency ratings significantly impact tire selection decisions, particularly for drivers seeking to maintain the Forester’s EPA-rated 24 mpg city and 32 mpg highway performance. Tread life warranties provide additional value considerations, with many premium brands offering coverage that extends beyond standard replacement intervals.
Load index compatibility remains critical when selecting tires, as the Forester’s weight distribution and cargo capacity requirements demand proper load ratings. Speed ratings must align with the vehicle’s performance capabilities while maintaining safety margins for highway driving conditions.
Cost Analysis and Budget Considerations
Tire replacement costs for the 2017 Subaru Forester vary significantly based on size specifications and brand selection. Standard 225/60R17 tires typically range from $80 to $140 per tire for quality all-season options, while the larger 225/55R18 tires found on Premium and Touring trims command higher prices between $100 to $150 per tire.
Premium tire manufacturers like Michelin and Goodyear offer enhanced durability and performance characteristics at price points ranging from $150 to $200 per tire. Budget-conscious drivers can find acceptable alternatives from reputable brands starting around $70 per tire, though these options may sacrifice some longevity and performance features.
Complete tire set costs present substantial investment considerations for Forester owners:
| Tire Category | Price Range (Set of 4) | Installation Cost | Total Investment |
|---|---|---|---|
| Budget Options | $280 – $400 | $100 – $150 | $380 – $550 |
| Mid-Range Tires | $400 – $600 | $100 – $150 | $500 – $750 |
| Premium Brands | $600 – $800 | $100 – $150 | $700 – $950 |
Installation expenses add $100 to $200 to the total cost, covering mounting, balancing, and alignment services essential for optimal performance. Professional installation ensures proper torque specifications and wheel balance, preventing premature wear and maintaining the Forester’s handling characteristics.
Maintenance scheduling affects long-term tire investment returns through regular rotation services every 5,000 to 7,500 miles. Proper rotation patterns extend tire life by 20% to 30%, reducing replacement frequency and overall ownership costs. Alignment checks every 12,000 miles prevent uneven wear patterns that can compromise tire performance and safety.
Seasonal considerations impact budget planning for Forester owners in cold climates requiring dedicated winter tires. Winter tire sets add $400 to $700 to annual tire expenses, though the enhanced traction and safety benefits justify this investment for drivers facing regular snow and ice conditions.
Conclusion
We’ve covered everything you need to know about selecting the right tires for your 2017 Subaru Forester. Whether you choose the standard 225/60R17 for comfort or upgrade to 225/55R18 for enhanced handling your decision should align with your driving priorities and budget.
Remember that proper tire maintenance and seasonal considerations play crucial roles in maximizing your investment. Regular rotation alignment checks and choosing quality brands from manufacturers like Michelin or Goodyear will ensure your Forester maintains its renowned all-weather capability.
The key is matching your tire choice to your exact needs while respecting the load index and speed ratings we’ve outlined. With this knowledge you’re equipped to make an well-informed choice that’ll keep your Forester performing at its best for years to come.
Frequently Asked Questions
What is the standard tire size for a 2017 Subaru Forester?
The standard tire size for a 2017 Subaru Forester is 225/60R17 across all trim levels. However, Limited and Touring trims may come equipped with 225/55R18 tires mounted on 18-inch wheels. These specifications are specifically designed to optimize the Forester’s all-wheel-drive system performance and handling characteristics.
What tire pressure should I maintain for my 2017 Forester?
The recommended tire pressure for the 2017 Subaru Forester is 33 PSI for both front and rear tires. Maintaining proper tire pressure ensures optimal contact patch distribution, ride quality, and fuel efficiency. Always check tire pressure when tires are cold for the most accurate reading.
Can I use 215/65R16 tires on my 2017 Forester?
Yes, 215/65R16 is considered a viable alternative tire size for the 2017 Subaru Forester. This size offers unique benefits for specific driving conditions and maintains compatibility with the vehicle’s systems. However, it’s recommended to consult your owner’s manual before making any tire size changes.
What’s the difference between 225/55R18 and 225/60R17 tires?
The 225/55R18 tires have a lower profile with shorter sidewalls, providing enhanced handling precision and steering response but potentially firmer ride quality. The 225/60R17 tires offer superior comfort with taller sidewalls that better absorb road irregularities while maintaining good overall performance.
Do I need winter tires for my 2017 Forester?
While the Forester’s all-wheel-drive system provides excellent traction, dedicated winter tires are recommended for heavy snow areas to ensure optimal safety and performance. All-season tires can handle moderate snow conditions, but specialized winter tires offer superior grip in cold temperatures and severe winter conditions.
How does tire size affect fuel economy in the Forester?
Both 225/55R18 and 225/60R17 tire sizes maintain similar fuel economy, with the Forester achieving up to 24 mpg city and 32 mpg highway regardless of tire size. Rolling resistance, tire compound, and tread design have more significant impacts on fuel efficiency than tire size alone.
What are the best tire brands for a 2017 Subaru Forester?
Top tire brands for the 2017 Forester include Goodyear, Michelin, Bridgestone, Continental, Pirelli, and BFGoodrich. Each brand offers different strengths: Goodyear for all-season versatility, Michelin for premium handling, and others for specific performance characteristics. Choose based on your driving needs and budget.
How much do replacement tires cost for a 2017 Forester?
Tire costs vary by size and brand. Standard 225/60R17 tires typically range from budget to premium pricing, while 225/55R18 tires may cost more due to their larger size. Premium brands command higher prices but often offer better performance and longer tread life warranties.
Can I upgrade to larger wheels and tires on my Forester?
Yes, you can upgrade to 18-inch wheels with 225/55R18 tires through plus sizing. This upgrade enhances handling and aesthetics while maintaining speedometer accuracy since the overall tire diameter remains nearly identical. However, expect a firmer ride due to shorter sidewalls.
How often should I rotate tires on my 2017 Forester?
Regular tire rotation is essential for extending tire life and maintaining even wear patterns. Follow the manufacturer’s recommended rotation schedule, typically every 6,000-8,000 miles, along with regular alignment checks to reduce overall ownership costs and maintain optimal performance.