Range difference of 21" tires vs. 19"

[bosgig]

Apologies if a conclusion has been reached on this in other threads. Can someone tell me whether there's a definitive answer to the expected difference in actual range between the 21" tires and the 19"? Tesla says the following on their website: "21-inch wheels with low-profile performance tires reduce battery range compared to 19-inch wheels with all season tires". But they don't say by how much! Thanks

 

[ChadS]

I don't know of any owners that have measured it on their cars.

But Tesla's in-store range-estimator tools changes the numbers by 2 - 2.5% when you switch between 19" and 21" wheels.

 

[jerry33]

Apologies if a conclusion has been reached on this in other threads. Can someone tell me whether there's a definitive answer to the expected difference in actual range between the 21" tires and the 19"? Tesla says the following on their website: "21-inch wheels with low-profile performance tires reduce battery range compared to 19-inch wheels with all season tires". But they don't say by how much! Thanks

It depends on a lot of factors (tire pressure, tread depth differences between the two tires, alignment, road surface, etc.). The 21" with it's stickier compound will maximize any non-optimum settings or conditions. I'd allow 5% as a WAG. The 2.5% on the estimator is probably the best case.

 

[sublimaze1]

Wouldn't it be reasonable to deduct that is is all a factor of rolling resistance? E.G. patch contact? If they say 2.5% or 5%, I would guess that would be peanuts to giving it the beans at every stopsign. I would say driving habits would be more of a factor. Having said that, wouldn't those with 21 85-Perf be more likely to drive like an M5?

 

[brianman]

Having said that, wouldn't those with 21 85-Perf be more likely to drive like an M5?

No comment.

 

[Raven5000]

Wouldn't it be reasonable to deduct that is is all a factor of rolling resistance? E.G. patch contact? If they say 2.5% or 5%, I would guess that would be peanuts to giving it the beans at every stopsign. I would say driving habits would be more of a factor. Having said that, wouldn't those with 21 85-Perf be more likely to drive like an M5?

Better than M5!!!!!!!!!!!!!!!!!!!!!!!! )

 

[Robert.Boston]

It depends on a lot of factors (tire pressure, tread depth differences between the two tires, alignment, road surface, etc.). The 21" with it's stickier compound will maximize any non-optimum settings or conditions. I'd allow 5% as a WAG. The 2.5% on the estimator is probably the best case.

To be clear, the 21" has worse range than the 19". Higher rolling resistance -> greater energy usage/mile.

 

[JakeP]

And the increased traction (which equals more friction, which is means less range) of the *tires* on the 21" wheels may be even a greater contributor to range loss. This was also stated directly to me my a Tesla Ownership Experience person.