How to choose the right tyres for electric cars

When it comes to changing the tyres on an electric vehicle, it’s important to understand the differences between tyres for electric cars and those designed for a vehicle with an internal combustion engine. Discover the work behind electric car tyres, and how there’s a lot more behind that black, rubber exterior than you might expect.

Are tyres for electric cars the same as tyres for combustion-powered cars?

Electric vehicles and traditional internal combustion engines (ICE) might look the same, and they can sometimes even be fitted with the same tyres! Still, to maximise the benefits of electric cars, Michelin has developed tyres exclusively for electric vehicles. Keep in mind that any of our tyre lines remain suitable for electric vehicles, while the MICHELIN Pilot Sport EV and MICHELIN e·Primacy, are specifically designed for EVs.

With an electric vehicle fitted with tyres that are designed for it, the battery range and the preservation of silence in the interior are what strikes the most. In addition, as soon as you press the accelerator, you immediately deploy 100% of the vehicle’s power. Whereas, with a combustion-powered vehicle, the engine is powered gradually. This means the transfer of weight during acceleration can be a lot more intense than with a combustion-powered vehicle.

These differences between an electric and an ICE-powered car have consequences on tyre design. At Michelin we design our electric car tyres differently to optimise the performance of electric vehicles. The battery range, the silence in the cabin, and tyre longevity are optimised while maintaining a high level of safety and driving pleasure of your electric car.

Are tyres for electric cars the same for all types of cars?

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As with an ICE-powered vehicle, there isn’t a one-tyre-fits-all option for electric vehicles. It all comes down to the purpose of the car. Michelin designs tyres specifically in regard to how it is going to be used. A tyre needs to respond to different driving demands, just like it does on all other types of cars.

A driver of a electric sports car, for example, has very different expectations from its vehicle than that of an electric city car. The driver of an electric sports car expects their tyres to provide precision at the steering wheel and to be able to translate the power of their vehicle to the ground. This is the driving enjoyment they seek. Thus, tyres for electric sports cars must combine both electric vehicle specificities and driving precision.

The challenges of an electric sports car tyre

Achieving this sensation from an electric sports car tyre involves considerable research and development. A soft, unresponsive tyre that doesn’t respond as well as the vehicle affects the entyre experience, and the driver loses many of the benefits of the car’s high performance nature, hence the need for a sports car tyre specifically designed for an electric vehicle.

Electric sports cars have powerful electric motors that provide instant torque and fast acceleration. To support these motors, you need to have a powerful battery, and this results in weight. 400kg is the average weight for a battery in an electric sports car. With this amount of weight and power you’ll need to have excellent control of the car and pay attention to preserve the capacity of the battery that will be downgraded by this additional load. The challenge is therefore mostly down to achieving the precise balance between control and the autonomy linked to the additional mass.

How do you know which tyres to fit on your electric car?

The MICHELIN Pilot Sport EV tyre has been designed to satisfy the very specific performance characteristics required by electric sports vehicles.

The MICHELIN Pilot Sport EV tyre innovates with increased cornering stiffness to keep handling sensations at the level of those of an internal combustion vehicle, with 15% more cornering stiffness(1) to compensate for the mass increase attributable to the weight of the vehicle’s battery.

The MICHELIN Pilot Sport EV also offers 60km of additional range(2) while reducing by 20% the perceived noise level(3), to maximize your driving pleasure, for longer.

MICHELIN Pilot Sport EV tire: Electrified road control, made to last | Michelin

For electric vehicles, the MICHELIN e·Primacy tyre can increase battery range by up to 7%(6). As well as all these characteristics, other performance such as wet grip and longevity are of a high standard(7)(8), offering a high level of safety.

Michelin also develops marked tyres with electric vehicles makers such as Mercedes-AMG, Porsche and Tesla. A marked tyre implies that all the car manufacturer's requirements have been met; this also applies to the electric car tyres.

Michelin adapts a wide range of tyres for electric car makers. You can recognise them by the tyre marking on the sidewall. 

New MICHELIN e.PRIMACY Tyre - Eco-responsible, made to last

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LEGAL MENTIONS

MICHELIN Pilot Sport EV

(1) Cornering stiffness internal study conducted on a machine in 10/2020, on dimension 255/45 R19, comparing MICHELIN Pilot Sport EV versus MICHELIN Pilot Sport 4 SUV.

(2) Better battery range for HP EV - Rolling Resistance internal study conducted in 10/2020, on dimension 255/45 R19, comparing MICHELIN Pilot Sport EV (6.7kg/t) versus MICHELIN Pilot Sport 4 SUV (8.8kg/t). For an electrical vehicle of a mass 2151kg, with an autonomy of 540km, this gap of 2.1kg/t drives to a gain of autonomy of more than 60km, or more than 10% of the initial range.

(3) - noise disturbance - Internal noise measurement, done in 2016 on size 245/45 R19 on KIA Cadenza. Noise level measured on the range "170-230Hz". Results may vary according to vehicle, tyre range and size, speed and road conditions.

 

MICHELIN e·Primacy

(4) Rolling resistance test - Rolling Resistance tests conducted on machine by Applus Idiada, on Michelin's request, June (on new) & August (on 2mm buffed) 2020, on dimension 205/55 R16 91V, comparing MICHELIN e.PRIMACY (new: 5.58kg/t & worn: 5.13kg/t) versus MICHELIN PRIMACY 4 (new: 7.74kg/t & worn: 6.25kg/t) ; BRIDGESTONE TURANZA T005 (new: 7.17kg/t & worn: 5.81kg/t) ; CONTINENTAL ECOCONTACT 6 (new: 6.39kg/t & worn: 5.49kg/t) ; CONTINENTAL PREMIUM CONTACT 6 (new: 8,93kg/t & worn: 6,94kg/t) ; DUNLOP BLURESPONSE (new: 7.97kg/t & worn: 5.54kg/t) ; GOODYEAR EFFICIENT GRIP 2 (new: 7.01kg/t & worn: 5.38kg/t) ; PIRELLI CINTURATO P7 BLUE (new: 6.96kg/t & worn: 6.30kg/t) ; PIRELLI CINTURATO P7 (new: 8.79kg/t & worn: 6.97kg/t).

 

(5) MICHELIN e.PRIMACY category of tyres is defined as one of the Premium summer tyres such as CONTINENTAL, GOODYEAR, BRIDGESTONE, PIRELLI, DUNLOP brands, and which are not dedicated to Original Equipment application (i.e. not designed to achieve car manufacturers specific targets) but tyres that can be purchased from retailers.

 

(6) Increased EV battery range and CO₂ reduction - When new, MICHELIN e.PRIMACY generates 2kg/t on average Rolling Resistance less than competitors, equivalent in fuel consumption reduction of up to 0.21l/100km, equivalent of a gain in CO₂ emission up to 5g  for a VW Golf 7 1.5 TSI or equivalent of gain of up to 7% in autonomy for a VW e.Golf.

 

(7) Longevity - Longevity test conducted by DEKRA TEST CENTER, on Michelin's request, June-July 2020, on dimension 205/55  R16 91V on VW Golf 7 comparing MICHELIN e.PRIMACY (100%) versus MICHELIN Primacy 4 (102.1%); Longevity test run in average real usage (D50) with 14.460 km run and extrapolated longevity at 1.6mm. Test winner ADAC Summer 2020 235/55 R17 test performed by ADAC on a Ford Kuga in 2020. This test was performed in 235/55 R17. Michelin Primacy 4 is the best of 12 tested tyres according to tested properties (wet, dry, noise, wear, fuel consumption). Michelin Primacy 4 is test winner with the following comments: "Very balanced with top marks in the wet, excellent low wear, very good in the dry" - Ranked 1.0 in Wear.

 

(8) - Wet grip - MICHELIN e.PRIMACY is rated "B" on the Wet Grip Item of the European labelling scale.