Tire mismatch
Four tires that do not tell the same story
Different brands, sizes, ages, or tread depths make an AWD Forester harder to judge and can hide noise or wear issues.
Kreativ Auto
Subaru Forester 2020: what to avoid
The Forester examples to avoid are the ones where AWD basics have been treated casually. Mismatched tires, road-speed hum, weak-start behavior, and thin records all make the car harder to price honestly.
Editorial review
A buyer-focused guide to the 2020 Forester condition patterns that deserve a discount, deeper inspection, or a pass.
By Kreativ Auto Editorial Team Reviewed Jun 18, 2026
Avoid guideUsed buyer checksAWD condition
The short version
Use these points before the detailed checklist.
- Avoid examples with mismatched tires unless the price and repair plan are clear.
- Road-speed hum should not be accepted without tire and wheel-end checks.
- Weak starts and missing records matter more when the car is sold as a low-drama AWD SUV.
Avoid these first
These issues weaken the Forester's main ownership appeal.
Road hum
Speed-linked noise with no diagnosis
Hum that rises with speed needs tire and wheel-end checks. A vague explanation is not enough on a vehicle where tire condition matters.
Battery
Weak starts treated casually
A weak battery can be simple, but repeated boosts without testing suggest poor ownership habits.
Records
AWD ownership with missing rotation history
Rotation and tire records matter on a Forester. Missing proof should change how much confidence the asking price deserves.
Walk-away patterns
These combinations usually mean the next owner inherits the diagnosis.
- The tires are mismatched and the vehicle already has speed-linked hum.
- A wheel-bearing explanation is offered without tire inspection or rotation history.
- The Forester starts weakly after sitting and no battery test has been done.
- Maintenance records are thin, but the seller prices the car like a careful AWD example.
- Road noise, tire wear, and weak starts all appear during the same inspection.
What is still negotiable
A Forester with one clear issue can still make sense at the right price.
- A full tire set needed soon when the rest of the car has clean records and quiet road behavior.
- A narrow battery issue with clean terminals, stable charging, and no warning-light pattern.
- Wheel-bearing noise after tire condition has been checked and the repair cost is priced in.
- Minor brake or suspension wear once tire match and road-speed noise are understood.
Buying inspection order
The Forester should be checked in a way that respects its AWD sensitivity.
- Inspect tire size, brand, age, tread depth, and wear pattern at all four corners.
- Drive at steady speed and listen for hum that follows vehicle speed rather than engine rpm.
- Ask for tire rotation and maintenance records before accepting a wheel-bearing explanation.
- Restart the vehicle after the drive and check battery behavior.
- Price the car based on immediate tire, battery, and wheel-end needs, not only mileage.
Final decision checkpoint
The right Forester is easy to believe.
A good 2020 Forester has a clean tire story, starts consistently, and does not need excuses for road-speed noise. When those details line up, the AWD benefit is easier to trust.
A Forester with mismatched tires, hum, and weak battery behavior can become expensive quickly. The issue is not that any one item is unusual; the issue is paying full price for a vehicle with several immediate needs.
Related problem guides
Open these when one symptom is clearly driving the buying or maintenance decision.
Related best-parts guides
Use these after the diagnosis is narrow enough to choose parts with confidence.
FAQ
What should I avoid on a used 2020 Subaru Forester?
Avoid mismatched tires, unexplained road-speed hum, weak starts, and missing tire rotation or service records.
Are mismatched tires a deal breaker?
They can be. At minimum, they should change the price and trigger a closer AWD and road-noise inspection.
Can wheel-bearing noise be negotiated?
Yes, if the diagnosis is narrow, tire condition has been checked, and the repair cost is reflected in the price.