2015 Subaru Forester: Tire Size, Pressure, and Wheel Specs

Quick Answer

• OEM Tire Size: 225/60R17 or 225/55R18
• Recommended Cold Tire Pressure: 30-32 PSI Front, 29-30 PSI Rear (Refer to door placard)
• Bolt Pattern: 5x100
• Wheel Size: 17x7 ET48 or 18x7 ET48
• Load Index/Speed Rating: 99H or 98H
• Spare Tire Size: T145/80D17 (Temporary Spare)
• TPMS Frequency: 315 MHz

Tire Sizes by Trim

Recommended Replacement Tires

When it's time for new tires, consider these popular options that balance performance, longevity, and value for your 2015 Subaru Forester.

• Michelin Defender T+H (Premium Tier): This all-season tire is a perennial favorite for its exceptional tread life, comfortable ride, and excellent wet and dry traction. Expect to pay around $180-$220 per tire.
• Continental CrossContact LX25 (Mid-Range Tier): Offering a great blend of performance and value, the CrossContact LX25 provides confident handling, a quiet ride, and strong all-season capability. Prices typically range from $160-$190 per tire.
• Falken Wildpeak A/T Trail (All-Terrain Capable, Mid-Range Tier): If your Forester sees occasional light off-road use or you simply prefer a more aggressive look, the Wildpeak A/T Trail offers a robust design with impressive grip on various surfaces without compromising too much on highway manners. Expect to pay about $150-$180 per tire.
• Goodyear Assurance All-Season (Value Tier): A solid choice for eco-conscious drivers, this tire offers good all-season performance and a comfortable ride at a more accessible price point, typically $130-$160 per tire.

When to Inflate to Max Load PSI

This section primarily applies to heavy-duty trucks and commercial vehicles that regularly carry significant loads. For your 2015 Subaru Forester, you should always adhere to the recommended cold tire pressures found on your vehicle's door placard. Inflating beyond these recommendations will not increase your vehicle's load-carrying capacity and can lead to a harsh ride, premature tire wear, and potentially unsafe handling characteristics.

Lug Nut Torque & Pattern

The 2015 Subaru Forester uses a 5x100 bolt pattern. This means there are five lug nuts, and they are arranged in a 100mm circle. The recommended lug nut torque specification for your Forester is 89.5 lb-ft (122 Nm). Always use a torque wrench to ensure proper tightening, following a star pattern to evenly seat the wheel against the hub. Overtightening or undertightening can cause issues with wheel mounting and potentially lead to dangerous situations.

Common Tire Issues for This Vehicle

• Uneven Wear: Subaru Foresters, like many all-wheel-drive vehicles, can be sensitive to tire wear differences. It's crucial to rotate your tires regularly (every 5,000-7,500 miles or as recommended in your owner's manual) to promote even wear across all four tires. Uneven wear can lead to noise, vibrations, and premature tire replacement.
• Alignment Issues: Potholes and general wear and tear can throw off your vehicle's alignment. Misalignment often manifests as uneven tire wear (e.g., feathering on the edges) and can negatively impact handling and fuel economy. It's a good idea to have your alignment checked periodically, especially if you notice new tire wear patterns or steering issues.
• TPMS Sensor Malfunctions: The Tire Pressure Monitoring System (TPMS) sensors in your Forester operate at 315 MHz. While generally reliable, these sensors can occasionally fail due to battery depletion (typically after 7-10 years) or physical damage. A dashboard warning light will indicate a TPMS issue, and a qualified technician can diagnose and replace faulty sensors.
• Road Noise: Some owners report increased road noise with certain tire models, particularly as tires wear down. Choosing touring-oriented all-season tires with good noise-reduction features can help mitigate this.

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