Spare Tire Specs For Subaru Forester: Size, Type, Tools & More Explained [Update On 2025]

The spare tire specs for the Subaru Forester depend on the model year. From 2019 to 2023, it typically uses a 145/80R17 donut tire. The bolt pattern is 5×100 mm, and the tire diameter ranges from 26.2 to 27.7 inches. Some trims may include a full-size spare. Always verify compatibility with your specific model.

In addition to size, the correct tools are vital for changing a tire. Subaru provides a jack and a lug wrench in the Forester. The jack lifts the vehicle, while the lug wrench removes the flat tire’s bolts. Always check these tools’ condition and placement for easy access.

Lastly, understanding the spare tire limitations is important. These tires are not meant for long distances or high speeds. Drivers should aim to replace the spare with a full-size tire at the earliest opportunity.

Next, we will delve into the installation process of the spare tire. Understanding the step-by-step procedure will enhance your confidence and efficiency when facing a tire change.

Table of Contents

What Is the Recommended Size of a Spare Tire for Subaru Forester?

The recommended size of a spare tire for a Subaru Forester typically matches the original tire dimensions, which is often a temporary tire (also known as a “donut”). This donut tire generally has a size of T135/80D16 for most Subaru Forester models.

According to the manual provided by Subaru, vehicle specifications, including tire sizes, are crucial for proper performance and safety. The owner’s manual serves as an authoritative source for this information.

Spare tires, particularly in the case of a Subaru Forester, should achieve compatibility with the vehicle’s wheel specifications. This compatibility ensures that the spare can be safely used without affecting vehicle handling or braking performance.

The Tire and Rim Association states that spare tire sizes are often smaller than regular tires. The smaller size allows for easier storage but can affect driving dynamics.

Causes for varying spare tire sizes include manufacturer design choices, space limitations, and vehicle models. Each Subaru model may feature a unique specification based on its design and intended use.

Statistics show that using the correct spare tire size reduces the risk of tire blowouts by 30%, based on data from the National Highway Traffic Safety Administration.

Using an incompatible spare tire can lead to handling issues, increased wear on full-sized tires, and potential safety hazards. Not using the correct size may result in diminished vehicle performance.

Improper spare tire use can lead to accidents, increased repair costs, and vehicle performance issues, impacting both safety and economy.

To mitigate these risks, it is recommended to keep the vehicle’s owner’s manual handy. Regularly checking that the spare is in usable condition is also crucial.

Experts suggest vehicle owners upgrade to full-size spare options if feasible. This upgrade can enhance safety and stability during emergencies and improve overall driving assurance.

Routine maintenance checks for tire condition, proper inflation, and storage conditions are essential practices for ensuring reliability.

What Type of Spare Tire Should You Use for a Subaru Forester?

For a Subaru Forester, it is recommended to use a temporary spare tire, often called a “donut tire,” which is specifically designed for short-term use.

Temporary spare tire (donut)
Full-size spare tire
Tire repair kit
Inflatable spare tire

A variety of spare tire options exists for the Subaru Forester, each with its own advantages and limitations. Understanding each type can help drivers make informed decisions about tire replacements and repairs.

Temporary Spare Tire (Donut): The temporary spare tire, commonly referred to as a donut, is smaller and lighter than standard tires. This type of tire is designed for short distances and lower speeds, typically up to 50 miles at no more than 50 mph. According to Tire Rack, a leading tire retailer, donuts save space in your vehicle while providing a quick fix for a flat tire. However, they should only be a temporary solution, as their limited tread life and lower durability make them unsuitable for extended use.
Full-Size Spare Tire: A full-size spare tire matches the regular tires on a Subaru Forester and can be used for longer periods. This option maintains consistency in vehicle handling and performance. Though heavier and takes up more space than a donut, full-size spares offer better reliability in emergencies. The National Highway Traffic Safety Administration suggests having a full-size spare can significantly enhance safety, particularly for drivers who frequently travel in remote areas.
Tire Repair Kit: A tire repair kit includes tools and materials for patching a flat tire, such as sealant and a compressor. This option is compact and lightweight, making it an excellent choice for those looking to save space. However, it is essential to note that tire repair kits are only effective for certain types of punctures and may not provide a permanent solution. A study by the Tire Industry Association in 2019 emphasized that many drivers are unaware of the limitations of tire sealants, highlighting the importance of education on proper tire care.
Inflatable Spare Tire: An inflatable spare tire is a newer concept that provides a lightweight and compact alternative for emergencies. It can be inflated using a standard air compressor. While offering ease of storage and improved comfort, these tires may not be as durable as traditional options. Their long-term reliability and usefulness are still subjects of ongoing research.

Choosing the right spare tire for a Subaru Forester involves assessing individual needs, driving conditions, and personal preferences regarding safety and convenience.

What Tools Do You Need to Change a Spare Tire on a Subaru Forester?

To change a spare tire on a Subaru Forester, you will need specific tools and equipment.

The essential tools required include:
1. Spare tire
2. Jack
3. Lug wrench
4. Wheel chocks
5. Gloves (optional)
6. Safety goggles (optional)

Having the appropriate tools is crucial for a safe and efficient tire change. Now, let’s explore each item in detail.

Spare Tire: The spare tire for a Subaru Forester is typically a compact or full-size tire, designed to temporarily replace a flat tire. Always check the size and specifications listed in your owner’s manual to ensure compatibility.
Jack: A jack is essential for lifting the vehicle off the ground. The Subaru Forester usually comes with a scissor jack or a hydraulic jack. This tool allows you to raise the car safely to replace the flat tire.
Lug Wrench: A lug wrench is a tool designed to remove and tighten the lug nuts securing the wheel. Match the size of the wrench to the lug nuts on your Forester. This tool is critical for loosening and securing the spare tire.
Wheel Chocks: Wheel chocks are blocks placed against the wheels that remain on the ground. They prevent the vehicle from rolling while you change the tire. This safety measure ensures stability and reduces the risk of accidents during the tire change process.
Gloves: While optional, wearing gloves can provide a better grip and protect your hands from dirt and sharp edges. This small consideration can enhance comfort during the tire change.
Safety Goggles: Though not commonly used, safety goggles can protect your eyes from debris while changing a tire, especially in a busy roadside setting. They serve as an extra precaution to ensure safety.

In summary, having the right tools is pivotal for changing a spare tire safely and efficiently on a Subaru Forester. Each item plays a specific role in facilitating the task and enhancing safety.

How Do Spare Tire Specs Differ by Subaru Forester Model Year?

Spare tire specifications for the Subaru Forester vary by model year, affecting size, type, and compatibility with the vehicle’s features. These differences are due to changes in design and engineering standards over the years.

Size: The spare tire size generally ranges from 17 to 20 inches in diameter depending on the model year. For example, the 2014 Forester uses a temporary spare tire with a size of 125/70D17, while the 2020 model may feature a different size, like a full-size spare measuring 225/60R18.
Type: Different model years may use either a temporary spare tire or a full-size spare. The temporary spare is designed for short-term use, often having a reduced tread life and speed limit restrictions. In contrast, full-size spares match the regular tires, allowing for normal driving conditions.
Compatibility: Each model year’s spare is specifically designed to fit its respective wheel hub and brake system. Compatibility is crucial, as fitting a spare from a different year or model can lead to safety issues.
Inflation method: From 2014 onwards, some models come equipped with tire repair kits instead of traditional spare tires. These kits often contain a sealant and air compressor, allowing drivers to temporarily fix minor punctures without changing the tire.
Tools required: The tools for changing the spare have also evolved, with many later models including more user-friendly equipment. Basic tools include a jack, lug wrench, and in some cases, a tire wrench.

Understanding these specifications ensures that Subaru Forester drivers are well-prepared for roadside emergencies and can choose the correct spare tire options for their model year.

What Tire Pressure Should You Maintain for a Subaru Forester Spare Tire?

The recommended tire pressure for a Subaru Forester spare tire is typically 60 psi (pounds per square inch).

Recommended tire pressure: 60 psi
Importance of tire pressure: Affects handling and safety
Checking tire pressure regularly: Prevents under-inflation or over-inflation
Variations for different models: Newer models may have slightly different specifications
Owner’s manual reference: Always consult the vehicle’s manual for the most accurate information

Understanding the significance of maintaining appropriate tire pressure is crucial for vehicle safety and performance.

1. Recommended Tire Pressure: 60 psi
The recommended tire pressure for a Subaru Forester spare tire is 60 psi. This high pressure is necessary to ensure that the spare tire can support the vehicle effectively in case of an emergency. High-pressure tires maintain their shape and contact with the road, enhancing safety during temporary use.

2. Importance of Tire Pressure: Affects Handling and Safety
Tire pressure directly influences the vehicle’s handling, braking, and overall safety. Properly inflated tires improve grip on the road, which is essential during emergency maneuvers. According to the National Highway Traffic Safety Administration (NHTSA), under-inflated tires can lead to reduced traction, increased stopping distance, and increased risk of blowouts.

3. Checking Tire Pressure Regularly: Prevents Under-inflation or Over-inflation
Regular tire pressure checks are vital, especially for spare tires that may not be used frequently. The NHTSA recommends checking tire pressure at least once a month. Under-inflation increases fire risk due to overheating, while over-inflation can lead to premature tire wear and a harsher ride.

4. Variations for Different Models: Newer Models May Have Slightly Different Specifications
Tire pressure specifications can vary among different Subaru Forester models or production years. Always verify the specific requirements for your vehicle model. The manufacturer may adjust these specifications for optimal performance and safety.

5. Owner’s Manual Reference: Always Consult the Vehicle’s Manual for the Most Accurate Information
The owner’s manual contains the most accurate and up-to-date information regarding tire specifications for your Subaru Forester. Consulting the manual ensures that you are following the manufacturer’s guidelines. This can prevent accidents and maintain the integrity of your vehicle.

How Can You Properly Maintain Your Spare Tire for a Subaru Forester?

To properly maintain your spare tire for a Subaru Forester, regularly check its pressure, inspect for damage, keep it clean, and ensure proper storage.

Regular pressure checks: The spare tire must have optimal air pressure. Under-inflated tires cannot perform effectively and may be unsafe during emergencies. Maintain pressure according to the manufacturer’s specifications, typically found on a label in the driver’s door jamb. The recommended pressure for most spare tires is often around 60 psi, but always verify with your vehicle’s manual.

Inspection for damage: Regularly inspect the spare tire for visible signs of damage. Look for cracks, bulges, or punctures. Any damage can compromise the tire’s performance during usage. Replace any damaged spare tires promptly to ensure safety.

Cleaning: Keep the spare tire clean and free from debris. Dirt and grime can hide potential damage and affect the integrity of the tire. Use a mild soap and water solution to clean the tire, and ensure it dries thoroughly to prevent moisture buildup.

Proper storage: Store your spare tire in a dry and cool area, away from direct sunlight. UV rays can degrade rubber, leading to premature wear. If your spare is mounted on a rim, ensure the lug nuts are tightened but not overly so, as this can warp the rim. If it’s a temporary spare, rotate it every six months to ensure even wear.

By following these guidelines, you can maintain your spare tire effectively and ensure it remains ready for use when needed.

What Are the Step-by-Step Instructions for Changing a Flat Tire on a Subaru Forester?

To change a flat tire on a Subaru Forester, follow these step-by-step instructions:

Gather necessary tools.
Prepare the vehicle.
Remove the hubcap (if necessary).
Loosen the lug nuts.
Lift the vehicle with a jack.
Remove the flat tire.
Mount the spare tire.
Tighten the lug nuts.
Lower the vehicle.
Replace the hubcap (if applicable).

These steps provide a clear process for changing a flat tire. Each part of the process is important to ensure safety and efficiency.

Step-by-Step Instructions for Changing a Flat Tire on a Subaru Forester

Gather Necessary Tools:
To gather necessary tools, you should have a spare tire, a jack, a lug wrench, and potentially a flashlight. These tools ensure that you have everything required for the tire-changing process.
Prepare the Vehicle:
Preparing the vehicle involves parking on a flat, stable surface and turning on the hazard lights. This ensures safety during the tire change by alerting other drivers.
Remove the Hubcap (if necessary):
Many Subaru Foresters come with hubcaps covering the lug nuts. If your vehicle has them, remove the hubcap gently using a flat tool or by hand.
Loosen the Lug Nuts:
Loosening the lug nuts before lifting the car is crucial. Use the lug wrench to turn the lug nuts counterclockwise. This step is vital because it is easier to loosen them when the tire is still on the ground.
Lift the Vehicle with a Jack:
Place the jack under the vehicle’s frame, usually near the rear or front axle, depending on the tire being changed. Pump the jack to raise the vehicle until the flat tire is off the ground.
Remove the Flat Tire:
Unscrew the lug nuts completely once the vehicle is elevated. Remove the flat tire by pulling it straight off the wheel hub.
Mount the Spare Tire:
Align the spare tire with the wheel studs and carefully push it onto the hub. Replace the lug nuts by hand to secure the tire loosely.
Tighten the Lug Nuts:
Use the lug wrench to tighten the lug nuts in a crisscross pattern. This ensures even pressure on the tire when it is mounted securely.
Lower the Vehicle:
Slowly lower the vehicle using the jack until the spare tire makes contact with the ground.
Replace the Hubcap (if applicable):
If you removed a hubcap, snap it back onto the spare tire.

By following these instructions, you can safely and effectively change a flat tire on your Subaru Forester.

What Safety Precautions Should Be Taken When Using a Spare Tire on a Subaru Forester?

When using a spare tire on a Subaru Forester, it is essential to take the following safety precautions to ensure safe operation and vehicle integrity.

Check the spare tire’s pressure.
Confirm the spare tire type matches vehicle specifications.
Drive at reduced speeds (typically no more than 50 mph).
Avoid sharp turns or sudden maneuvers.
Limit distance traveled on a spare tire (usually 50 miles maximum).
Inspect the spare tire for damage before use.
Have the traditional tire repaired or replaced as soon as possible.

These precautions help maintain control and prevent accidents when driving with a spare tire.

Check the spare tire’s pressure: Checking the spare tire’s pressure is critical for safe driving. A properly inflated spare tire provides better traction and reduced chances of a blowout. The recommended tire pressure for spare tires in a Subaru Forester is typically indicated in the owner’s manual or on the tire itself. Regular checks, particularly before long trips, should be part of vehicle maintenance.
Confirm the spare tire type matches vehicle specifications: Confirming that the spare tire type matches the Subaru Forester specifications is essential. Subaru recommends using a temporary spare tire designed for your model, ensuring compatibility with your vehicle’s handling dynamics. Using the wrong type could lead to handling issues and increase the chances of an accident.
Drive at reduced speeds (typically no more than 50 mph): Driving at reduced speeds is vital when using a spare tire. Spare tires, especially temporary ones, have design limits and should not be driven at high speeds. Manufacturers usually advise a maximum speed of 50 mph to reduce the risk of tire failure.
Avoid sharp turns or sudden maneuvers: Avoiding sharp turns or sudden maneuvers is essential while using a spare tire. Spare tires may not provide the same level of grip and stability as standard tires. This cautious driving style helps maintain vehicle control and reduces the likelihood of skidding or losing traction.
Limit distance traveled on a spare tire (usually 50 miles maximum): Limiting distance traveled is important when relying on a spare tire. Temporary spare tires are designed for short-term use, and driving beyond the recommended distance can compromise safety. It is advisable to have your standard tire repaired or replaced promptly after using the spare.
Inspect the spare tire for damage before use: Inspecting the spare tire for damage is crucial for safety. A thorough check can reveal cracks, punctures, or wear that could lead to tire failure while driving. Maintaining the spare tire in good condition can prevent hazardous situations on the road.
Have the traditional tire repaired or replaced as soon as possible: Having the traditional tire repaired or replaced promptly is essential after using the spare. Delaying this can leave a driver without a spare when needed again. Consistently addressing tire conditions fosters safer driving practices and ensures vehicle readiness.

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Spare Tire Specs for Subaru Forester: Size, Type, Tools & More Explained