What the evidence shows
Tyre wear is a real environmental problem, and a heavier EV can produce more of it. A tyre measurement alone cannot establish which car causes more air pollution, climate damage or total environmental harm.
Older vehicles or current generations?
The March 2023 test compares one Tesla Model Y BEV with one Kia Niro full hybrid, both under one year old. It is a two-vehicle test, not a matched model-year or fleet-wide EV-versus-ICE comparison.
We separate vehicles from before 2023 and 2023 onward. A report’s publication date does not establish a vehicle’s model year or a battery’s manufacturing date.
Vehicle years not establishedEmissions Analytics UK EQUA tyre-wear comparison
- Vehicles / sample
- Tesla Model Y BEV and Kia Niro full hybrid; both under one year old at test, original tyres, similar tread depth and odometer readings.
- Vehicle years
- Not reported; under-one-year age at March 2023 is not a stated model year or manufacture year.
- Battery chemistry
- Not reported.
- Battery capacity
- Tesla Model Y: 78.1 kWh; Kia hybrid pack capacity not reported.
- Battery manufacture
- Battery production year, location and cell cohort not reported; production emissions were outside this tyre test.
- Observation period
- UK convoy test in March 2023; five repeats of the EQUA cycle, 741 km total.
“Not reported” means the source does not disclose it. Model year, first registration, vehicle assembly and battery manufacture are different dates. Unmatched studies cannot establish how much newer batteries improved.
Which brands do these results describe?
Emissions Analytics compared tyre mass loss for one Tesla Model Y BEV and one Kia Niro full hybrid on a UK route. This allows a two-vehicle result under those conditions, not a brand-wide comparison or an isolated estimate of electric propulsion’s effect.
EV-focused brands
Tesla
Named vehicle in the Emissions Analytics test: Model Y BEV, one route-specific tyre mass-loss result.
Established multi-powertrain brands
Kia
Named vehicle in the Emissions Analytics test: Niro full hybrid, one route-specific tyre mass-loss result.
All manufacturers are OEMs. These groups describe brand focus, not a quality ranking or country of origin. EV-focused brands can also sell plug-in hybrids. Results apply to the identified models, batteries and conditions.
Manufacturer and model sources (2)
What the original comparison showed
The claim starts with a legitimate concern. In March 2023, Emissions Analytics drove a Tesla Model Y and Kia Niro hybrid in convoy on a UK test route and measured tyre mass loss. The Tesla produced 26% more tyre wear in that comparison. It was also heavier and more powerful, and the cars used different tyres. This is useful evidence about those vehicles under the test conditions. It cannot isolate the effect of electric propulsion from weight, tyre selection and other differences. [1].
Which pollution are we comparing?
A gram lost from a tyre is not automatically a gram of fine airborne particulate matter. The 2024 review by Giechaskiel and colleagues distinguishes total abrasion, airborne particles and material deposited into soil or carried into water. Those pathways all deserve attention, but they create different exposures. An alarming ratio between total tyre loss and a modern car’s filtered exhaust particulate mass can therefore compare different measurements. It also says nothing directly about carbon dioxide. [2].
Brakes change the comparison
Electric vehicles can slow down by using the motor to recover energy. That reduces the work demanded of friction brakes, creating a potential reduction in brake particles. A 2024 JRC paper examines regenerative braking alongside other brake-emission controls. The benefit must be assessed under actual operating conditions; it should not be modelled as a guarantee of zero brake dust. Brakes remain necessary, and tyre, road-wear and resuspended-dust emissions remain. [3].
How to make a defensible claim
The UK Department for Transport’s phase-two research, released in November 2025, tested measurement prototypes on vehicles in the laboratory and on the road, exploring factors affecting non-exhaust emissions. That work reinforces the need for specified methods and comparable conditions. [4].
A useful comparison states the vehicle models, mass, tyres, driving cycle and particle metric. A large, heavy EV can have a tyre disadvantage against a smaller combustion car; that warrants lighter vehicles and better tyres. It does not establish that every EV is worse for urban air quality or the climate. The honest conclusion is that electrification addresses exhaust emissions while non-exhaust pollution requires its own controls. The word ‘polluting’ needs an explicit definition before any numerical comparison becomes meaningful.
Euro 7 sets a separate brake test limit
EU Euro 7 adds a regulated comparison for new M1 cars: through 2029, the standardized brake PM10 limit is 3 mg/km for battery EVs and 7 mg/km for combustion, hybrid and fuel-cell cars. The requirements begin for new vehicle types in November 2026 and for new vehicles in November 2027. These are regulatory test limits, not observed average emissions or a measure of tyre wear. [5]
Data period: UK comparison in March 2023; UK non-exhaust measurement studies released in 2023 and November 2025; EU Euro 7 rules adopted in 2024 with phased application from November 2026
Claim traceability
Do No Harm — Emissions Analytics, 2023-03-20. A documented original test and policy argument behind the wider tyre-pollution discussion. The article title here tests the broader inference; it is not a quotation from this source. The documented statement: “Emissions Analytics reported 26% greater tyre wear for a Tesla Model Y than a Kia Niro hybrid and argued for shifting support toward hybrids.”
What this does—and doesn’t—tell us
- The comparison does not establish a fleet-wide EV versus ICE emissions factor.
- Exposure, particle size, chemistry, tyres, roads and driving conditions affect the health interpretation.
- Neither tyre mass nor airborne particulate mass measures lifecycle greenhouse gas emissions.
Treat tyre pollution as a real design and transport-policy problem. Ask whether a headline measured tyre abrasion, airborne particles or greenhouse gases before accepting its conclusion.
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