Fuel savings calculator;
Rolling resistance is one of the three main parameters on the EU tyre label (A to E). A lower class means less energy to move the vehicle, i.e. less fuel burned. The calculator below converts that gap into a concrete euro figure.
How much can lower rolling resistance tyres save me?
Compare your current EU rolling-resistance class with the new one and see the annual saving in litres, euros and kilograms of CO₂.
A one-class jump on the EU label typically removes ~0.1 L/100 km - at current fuel prices and mileage this pays back over 2-3 years of use.
This is an indicative calculation. Real saving depends on tyre pressure, driving style, road type and vehicle load. Methodology: EU R117-02 standard - each A→E class shift equals ~7 kg/t rolling-resistance coefficient, which on a passenger car maps to ~0.1 L/100 km.
How the calculator works
The formula follows the EU R117 tyre certification methodology:
- Each EU label class (A, B, C, D, E) differs by ~7 kg/t in the rolling-resistance coefficient.
- On a ~1.4 t passenger car this maps to ~0.1 L/100 km between adjacent classes.
- We multiply that delta by your annual mileage and fuel price → annual saving.
- CO₂ emission uses the European average of 2.3 kg CO₂ per litre of petrol/diesel burned.
Frequently asked questions
Does this calculation apply to electric vehicles?
Not directly - electricity prices and EV efficiency are different. For EVs the better metric is range impact: lower rolling resistance extends range by 2-5% between adjacent classes.
Why do better-RR tyres often grip worse on wet?
Softer compound = better wet grip = higher rolling resistance. Harder compound = less resistance = weaker grip. A-class on both axes does exist but typically sits above mid-price for premium brands.
How does the cost of the new set affect the final saving?
The calculator shows the fuel saving only. Payback period = set cost divided by annual saving. Typically 2-4 years moving from D to A class at an average Croatian mileage of 12,000-18,000 km.
Ready for a new set?
Open the catalogue and filter by EU rolling-resistance class in the sidebar.
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