How Wheel Size Impacts Tesla Model S, X Efficiency
Wheel size impacts range on all vehicles, but it has a greater influence on Tesla vehicles than you may expect.
According to older documents just recently released by the Environmental Protection Agency (EPA), Tesla vehicle efficiency sees a measurable change dependent on wheel size. Electrek shared Teslike’s analysis of the newly acquired data, which was posted on Tesla’s Redditt. Being that range is one of the most important considerations when deciding to make the switch to an EV, and these results are so compelling, it’s surely worth mentioning.
The EPA conducted these tests nearly a year ago (December 2016). However, results were just publicized. Teslike’s summary of the results are as follows:
- 4.9% more consumption for Model S P100D with 21″ vs 19″ wheels.
- 5.2% more consumption for Model S P90D with 21″ vs 19″ wheels.
- 11.6% more consumption for Model S 60/75 with 21″ vs 19″ wheels.
- 11.8% more consumption for Model S 60D/75D/90D with 21″ vs 19″ wheels.
- 22.2% more consumption for Model X P90D with 22″ vs 20″ wheels.
- 22.5% more consumption for Model X 60D/75D/90D with 22″ vs 20″ wheels.
- 23.3% more consumption for Model X P100D with 22″ vs 20″ wheels.
A screenshot of the EPA data from Reddit is shown below. The reports for other Tesla vehicles are available by following the Reddit link at the bottom of the page:
As Electrek points out, the EPA performed some of the tests using a dyno at slower speeds (50 mph). This is not representative of highway speeds, wind resistance, or road conditions. However, the results are still telling.