How to use this calculator
- Enter the distance and baseline consumption.
- Add current and recommended tire pressure.
- Enter a separate rolling-resistance adjustment if needed.
- Add charging efficiency and your electricity price.
#1514 · Energy & Environment Tool
EV Tire Energy Cost Calculator
Estimate how tire pressure and rolling resistance affect the electricity cost of EV driving. The calculator converts a mileage plan into baseline battery energy, applies a transparent tire-related consumption adjustment, accounts for charging efficiency, and prices the added grid energy. Use it to compare maintenance or tire-choice scenarios without confusing battery energy with billed grid energy.
Calculator
Driving, tire, and price inputsFormula
Adjusted grid energy = distance × consumption ÷ 100 × (1 + tire change) ÷ charging efficiency
Added cost = (adjusted grid energy − baseline grid energy) × electricity price
What the result means
The main result is the added or saved electricity cost for the selected distance. Secondary results show total adjusted cost, grid-energy change, and cost per mile.
Electricity tariffs can include fixed fees, tiers, taxes, and demand charges that this energy-only estimate does not model.
Example calculation
For 1,000 miles at 30 kWh/100 miles, 32 psi versus 36 psi adds 3.33% consumption. At 90% charging efficiency and $0.18/kWh, grid energy rises from 333.33 to 344.44 kWh. The estimated added cost is $2.00 and adjusted total cost is $62.00.
Tips for better results
- Use the marginal electricity rate for added energy.
- Match distance to a month or year.
- Use cold tire pressure.
- Include charging losses consistently.
- Run separate seasonal scenarios.
Frequently asked questions
Does EV tire pressure affect the electricity bill estimate?
Yes. Lower pressure increases modeled consumption, which increases grid energy and cost for the same driving distance.
Why does the calculator use grid energy instead of battery energy for cost?
Electricity is billed at the meter, so charging losses must be included when estimating purchased energy.
Can I enter a time-of-use EV charging rate?
Yes. Enter the electricity price that applies to the charging period you want to model.
How can I compare two EV tire models with different rolling resistance?
Run the calculator once for each tire’s expected resistance change while keeping distance, consumption, efficiency, and price constant.
Does the result include tire purchase or replacement cost?
No. It estimates electricity cost only and does not include tire price, wear, maintenance, or alignment work.
Related calculators
Energy-cost variables
| Input | Effect |
|---|---|
| Distance | Scales total energy and cost |
| Consumption | Sets baseline battery energy |
| Charging efficiency | Converts battery energy to grid energy |
| Electricity price | Prices each grid kWh |