How do different tires on the Tesla Model S impact energy consumption and road noise?

Bjørn Nyland points out that people continue to say that bigger tires consume more energy and are louder. This may be the general consensus, but how much? What impact do different tires have on the Tesla Model S?

Nyland explains that he's testing five different tires - two of the 21" inch variety and three 19" pairs - on the same stretch of road in similar conditions. He's installing each set of tires on a Tesla Model S 90D (facelift). Conditions were as follows:

  • Daytime
  • Dry road
  • Average of 70 km/h (43 mph)
  • 25 Celsius (77 Fahrenheit)
For the consumption test, Nyland has range mode on and HVAC off. The specific tires and results are listed below in the video description. Interestingly, while the premise is proven that larger tires consume more energy, the noise test didn't turn out quite like some might have expected. The second and third loudest sets of tires are actually 19s. Obviously, the specific type of tires also impacts the results.

Video Description via Bjørn Nyland on YouTube:

I tested five different tires and measured noise and energy consumption on a Tesla Model S: 21” Michelin Pilot Sport 2: 64.6 dB, 147 Wh/km, 237 Wh/mi 21” Achilles ATR Sport 2: 62.9 dB, 146 Wh/km, 235 Wh/mi 19” Michelin Primacy 3: 62.0 dB, 133 Wh/km, 214 Wh/mi 19” Roadclaw RH660: 63.3 dB, 131 Wh/km, 211 Wh/mi

19” Nereus NS601: 64.3 dB, 137 Wh/km, 221 Wh/mi