What should I verify before using this information?

Use TireFitLab values as a sizing reference, then verify the vehicle handbook, tire placard, rim compatibility, load rating, and physical clearance before fitting.

Tyre rolling resistance: how it works, fuel economy impact, and what the EU label A–G means

What is tyre rolling resistance and does it affect fuel economy?

Tyre rolling resistance is the energy lost per unit distance as a tyre deforms and recovers under load during rolling. As the tyre contacts the road, the rubber and carcass deform at the contact patch, then spring back as the contact area rotates away. This deformation-and-recovery cycle is not perfectly elastic — energy is lost as heat, internal friction, and vibration in the tyre structure (hysteresis). Rolling resistance typically accounts for 15–30% of a passenger car's total fuel consumption at highway speeds. A tyre with EU Tyre Label fuel efficiency grade A uses approximately 0.5–0.7 litres per 100 km less fuel than a grade G tyre of the same size.

Tyre rolling resistance is the energy lost per unit distance as a tyre deforms and recovers under load during rolling.
As the tyre contacts the road, the rubber and carcass deform at the contact patch, then spring back as the contact area rotates away.
This deformation-and-recovery cycle is not perfectly elastic — energy is lost as heat, internal friction, and vibration in the tyre structure (hysteresis).

FAQ

What is tyre rolling resistance and does it affect fuel economy?: Tyre rolling resistance is the energy lost per unit distance as a tyre deforms and recovers under load during rolling. As the tyre contacts the road, the rubber and carcass deform at the contact patch, then spring back as the contact area rotates away. This deformation-and-recovery cycle is not perfectly elastic — energy is lost as heat, internal friction, and vibration in the tyre structure (hysteresis). Rolling resistance typically accounts for 15–30% of a passenger car's total fuel consumption at highway speeds. A tyre with EU Tyre Label fuel efficiency grade A uses approximately 0.5–0.7 litres per 100 km less fuel than a grade G tyre of the same size.
What should I verify before using this information?: Use TireFitLab values as a sizing reference, then verify the vehicle handbook, tire placard, rim compatibility, load rating, and physical clearance before fitting.

The physics of rolling resistance

When a tyre rolls on a surface, the contact patch — the area of tread in contact with the road — is continuously deforming under the vehicle's weight and then springing back as it rotates away from the contact zone. The rubber and carcass materials undergo cyclic stress and strain.

In a perfectly elastic material, all of the energy stored in the deformation would be returned as the material recovers. Real rubber is viscoelastic — its recovery is delayed and incomplete. Energy is dissipated as heat, sound, and molecular friction within the rubber structure. This is called hysteresis, and it is the primary source of rolling resistance in tyres.

The rolling resistance force (F_r) is: F_r = C_rr × W

Where C_rr is the rolling resistance coefficient (dimensionless) and W is the vertical load on the tyre (N). For a passenger car tyre, C_rr typically ranges from 0.006 (an excellent eco-tyre) to 0.015 (a performance compound or underinflated tyre).

EU Tyre Label fuel efficiency grades

The EU Tyre Regulation (EU 2020/740) requires all tyres sold in Europe to be labelled with three ratings, one of which is fuel efficiency (rolling resistance), graded A through G. Grades F and G are not used for passenger car tyres; most passenger tyres fall between A and E.

Grade	Fuel saving potential	vs grade G (L/100km)	vs grade G (CO2)	Typical Crr	Typical tyre types	Notes
A	Best — benchmark class	Approximately 0.5–0.7 L/100km less than grade G	Approximately 12–17 g CO2/km less than grade G (petrol engine)	Approximately 0.006–0.008	Modern eco-tyres, premium all-season, EV-specific tyres	In practice very few tyres currently achieve A — most EU market premium tyres are B or C. An A-rated tyre offers the maximum fuel benefit available in a mainstream product.
B	Very good	~0.4 L/100km less than G	~10 g CO2/km less than G	~0.008–0.009	Most premium all-season and summer tyres	The practical target for a fuel-efficient tyre that does not compromise wet grip. Many A-rated wet grip tyres are B on fuel efficiency.
C	Good	~0.3 L/100km less than G	~7 g CO2/km less than G	~0.009–0.010	Mid-range all-season, many mid-range summer tyres	A typical grade for competent all-rounders. Still substantially better than the lowest grades.
D	Average	~0.2 L/100km less than G	~5 g CO2/km less than G	~0.010–0.011	Some budget tyres, older designs	D is the dividing line — below this point there is a meaningful additional fuel cost. F and G are not used for passenger car tyres under the EU system (they appear only on truck tyres).
E	Below average	~0.1 L/100km less than G	~3 g CO2/km less than G	~0.011–0.012	Budget tyres, performance tyres optimised for grip at cost of efficiency	Max-performance summer tyres often fall here — the soft compound needed for dry and wet grip increases rolling resistance significantly.

Factors that affect rolling resistance

Factor	How it affects rolling resistance	Direction	Magnitude	Notes
Compound softness (Shore A hardness)	The primary driver of rolling resistance. Softer compounds (lower Shore A) deform more deeply at the contact patch and lose more energy per cycle through hysteresis.	Softer = higher rolling resistance = better grip; harder = lower rolling resistance = longer wear	Moving from a 65 Shore A compound to a 55 Shore A compound can increase Crr by 20–40%.	This is the fundamental trade-off: the tyre compound that grips best on wet roads is the same chemistry that generates more rolling resistance. Modern compound technology (silica-based) partially decouples this relationship.
Tyre inflation pressure	Lower inflation pressure allows more sidewall and tread deformation at the contact patch, increasing the hysteresis cycle volume and energy loss.	Underinflation increases rolling resistance. Overinflation decreases rolling resistance but reduces contact patch area (less grip).	A 20% reduction in inflation pressure (e.g., 2.5 bar to 2.0 bar) increases rolling resistance by approximately 15–20%.	This is why correct inflation is the single easiest way for a driver to reduce rolling resistance. A 0.3 bar underinflation can easily add 0.2–0.4 L/100km to fuel consumption.
Tyre temperature	Cold rubber is stiffer and dissipates less energy elastically — it deforms less but also recovers less completely. As temperature rises, rolling resistance decreases until an optimal range.	Cold tyre = higher rolling resistance; warm tyre = lower rolling resistance. This is why fuel consumption is slightly higher in cold weather.	Rolling resistance at 0 °C can be 15–20% higher than at 20 °C for the same tyre.	This is one reason why winter tyres (which are softer to remain flexible in cold conditions) have higher rolling resistance at normal driving temperatures than summer tyres.
Tyre width	Wider tyres have a larger contact patch area, meaning more rubber is deforming at any given moment.	Wider = more rolling resistance (all else equal).	A 255 mm tyre has roughly 10–15% more rolling resistance than a 225 mm tyre of the same construction and compound.	This is one reason why dedicated EV tyres are often specified in narrower widths than the equivalent ICE tyre — reducing rolling resistance directly extends range.
Tread depth	More tread depth means more rubber mass undergoing deformation per revolution. This increases hysteresis slightly.	New deep tread = marginally higher rolling resistance than a well-worn tyre of the same compound.	Effect is relatively small compared to compound and pressure — approximately 5–10% between new and half-worn.	The difference is noticeable in precise laboratory measurement but is not a meaningful factor in real-world fuel economy decisions.
Carcass construction	Radial ply carcasses have lower rolling resistance than bias-ply (cross-ply) because the flexible sidewall deforms independently of the rigid belts — the contact patch can conform to the road with less overall energy loss.	Radial (standard) = lower rolling resistance than bias-ply.	Radial vs bias-ply can differ by 15–25% in rolling resistance. All modern passenger car tyres are radial.	Steel belt carcasses have lower rolling resistance than polyester belt carcasses at the same compound — steel deforms less plastically.

Silica vs carbon black: how modern compounds improve the trade-off

Compound type	Rolling resistance	Wet grip	Tread life	Notes
Traditional carbon black compound	Higher (Crr ~0.010–0.015)	Moderate	Good	Carbon black was the standard filler until the 1990s. It gives good abrasion resistance but poor wet grip and high rolling resistance at the same hardness level.
Silica-enhanced compound (modern)	Lower (Crr ~0.006–0.010)	Good to excellent	Good	Silica (SiO₂) as a filler reduces the hysteresis in the compound at the frequencies experienced during rolling, while maintaining or increasing hysteresis at the frequencies relevant to grip. This partially decouples the grip-vs-rolling-resistance trade-off.
Performance max-grip compound (R-compound)	Very high (Crr 0.015–0.025+)	Maximum available	Very short	Track-day and motorsport compounds are intentionally maximised for grip. Rolling resistance is not a priority.

Rolling resistance and electric vehicles

Consideration	Detail	Impact
Rolling resistance and EV range	In a battery electric vehicle, rolling resistance accounts for a higher proportion of energy consumption than in an internal combustion engine vehicle. An ICE car loses energy to engine inefficiency (heat), drivetrain losses, and rolling resistance. An EV drivetrain is ~90% efficient — rolling resistance becomes a larger percentage of the remaining energy budget.	A Crr difference of 0.002 (e.g., 0.010 vs 0.008) translates to approximately 3–5% range difference in an EV — equivalent to 10–15 km on a 300 km range vehicle.
EV tyre weight and load capacity	EV battery packs add 300–700 kg to vehicle weight compared to equivalent ICE models. EV tyres must support this higher load without adding more sidewall deformation (which would increase rolling resistance). This is achieved through reinforced bead areas and slightly stiffer carcass construction.	EV-specific tyres often have higher load ratings than standard equivalents in the same size.
Tyre noise in EVs	Without engine noise, tyre and road noise are the dominant noise sources in an EV interior. EV tyres use acoustic foam layers inside the tyre (foam insert bonded to the inner liner) to absorb road noise vibration.	The acoustic foam adds weight but is considered essential for the EV experience. It does not significantly affect rolling resistance.
Instant torque and tyre wear	Electric motors deliver maximum torque from 0 rpm. This means significantly more slip at the driven wheels during acceleration, particularly on the rear axle of rear-wheel-drive EVs. Higher slip = higher wear rate on driven-axle tyres.	EV tyres often have higher treadwear compound hardness on the driven-axle position to compensate, or manufacturers recommend more frequent rotation.

How rolling resistance contributes to total fuel consumption

At highway speeds (100–130 km/h), the dominant forces acting on a passenger car are aerodynamic drag and rolling resistance. Aerodynamic drag scales with the square of velocity — it dominates at high speeds. Rolling resistance is approximately linear with speed — it becomes proportionally more significant at lower speeds.

At 80 km/h, rolling resistance accounts for approximately 30–35% of total energy consumption. At 130 km/h, aerodynamic drag is dominant and rolling resistance drops to approximately 15–20% of total.

For urban driving (stop-start, average speeds of 20–40 km/h), rolling resistance accounts for a larger share again — but the dominant energy consumer is acceleration (kinetic energy lost to braking), where regenerative braking in EVs and hybrids recovers energy that conventional vehicles waste entirely.

Practical tips to reduce rolling resistance

Inflate to the manufacturer's recommended pressure. Underinflation is the single easiest-to-avoid source of excess rolling resistance. Check pressure monthly (or use TPMS alerts). Check cold, before driving.

Choose an EU label A or B rated tyre. The difference between a C-rated and an A-rated tyre of the same size and wet grip grade is approximately 0.2–0.4 L/100km. Over 20,000 km per year and a 4-year tyre life, that is 160–320 litres of fuel — a meaningful saving.

Do not significantly oversize (width or diameter). A wider tyre has more rolling resistance than a narrower equivalent. If you are choosing between two fitments where either is within tolerance, the narrower tyre will have marginally lower rolling resistance.

Keep wheel alignment correct. Misalignment causes scrub — one or more tyres running at a slip angle to the direction of travel. This dramatically increases rolling resistance and creates diagonal wear patterns. A car with moderate misalignment can see a 5–10% increase in rolling resistance.

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Last reviewed: 2026-06-22

Last reviewed: 2026-06-28

What changed

Reviewed deterministic geometry, load/speed references, sitemap inclusion and localized page shell.