Tire size meaning

295/40 R20

What the numbers on a 295/40 R20 tire actually mean — width, sidewall, construction and rim — explained in plain language with real-world driving context.

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Direct answer

What does 295/40 R20 mean?

295/40 R20 is a metric tire size: 295 mm wide, a sidewall 40% of that width (118 mm), radial construction, fitted to a 20-inch wheel. Overall diameter ≈ 744 mm.

295
Section width in mm (sidewall to sidewall).
40
Aspect ratio — sidewall is 40% of width (118 mm).
R
Radial construction — the modern layered build.
20
Wheel rim diameter in inches (508 mm).

Ø 744 mm · 29.29″ · 428 revs/km

Section width 295 mmSidewall 118 mmR20 (508 mm)Ø 744 mm (29.29″)

Dimensional breakdown

Section width
295 mm
Aspect ratio
40%
Sidewall height
118.0 mm
Rim diameter
20″ (508.0 mm)
Overall diameter
744 mm
Circumference
2.337 m
Revs per km
428
Construction
Radial (R)

What 295/40 R20 feels like on the road

A 295/40 R20 tire is a balanced touring-profile tire. With a sidewall of 118 mm, it offers a comfortable ride and good steering feel — the family-car sweet spot.

The 295 mm contact width delivers maximum contact patch for high-performance and SUV applications. Combined with a 20-inch wheel, this size is most commonly found on performance cars, premium sedans and full-size SUVs.

At highway speed each tire completes about 428 revolutions per kilometre — the figure your speedometer and ABS were calibrated against if 295/40 R20 is the OEM specification.

Common alternatives to 295/40 R20

Sizes within ±3% overall diameter — generally safe swaps for speedometer accuracy and clearance. Click any size to open a full side-by-side comparison.

Driver feel · telemetry

What 295/40 R20 usually feels like

A driver-perspective read on this size — steering, comfort, highway stability and rough-road behavior.

Steering feel

Balanced, OEM-style response

A familiar OEM feel — predictable inputs without trade-offs.

Ride comfort

Comfortable daily ride

A balanced compromise — bumps muted, steering still precise.

Highway stability

Planted at highway speed

Wider contact patch resists crosswinds and tramlining — strong straight-line confidence.

Pothole comfort

Reasonable impact protection

Enough sidewall to protect the rim from typical urban hits.

Sporty vs OEM tone

Balanced everyday character

A factory-style balance between feel, comfort and grip.

Sidewall118 mm
Ø744 mm
Width295 mm
Revs/km428

Related tire sizes for 295/40 R20

Explore neighbouring sizes by intent — similar, wider, lower-profile, OEM-safe, or aggressive. Each link opens a full side-by-side comparison.

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Frequently asked questions