Wheels Specs - Bolt Pattern / Offset? Tire Size Change Via App?

[5ohbrad]

Curious about wheel spec. What bolt pattern and offset is it? Also, can the end user adjust speedo/odometer calibration for change in tire size? OTA update from your phone to adjust in app would be an amazing feature!

 

[UFO CTR]

I love those standard black wheel

 

[JeffVA]

I love those standard black wheel

They are awesome. I would actually pay a little more if these were an upgrade

 

[AZFox]

In particular I'd like to know if a 16" wheel can be fitted.

A 16" wheel is lighter than a 17 and provides 1/2" more sidewall height.

I looked up my likely tire choice. It weighs two pounds less in 235/85R16 compared to 235/80R17 (44 pounds vs. 46 pounds). Lowering un-sprung weight by installing a lighter tire and wheel with a taller sidewall provides advantages, including an efficiency advantage.

 

[UFO CTR]

In particular I'd like to know if a 16" wheel can be fitted.

A 16" wheel is lighter than a 17 and provides 1/2" more sidewall height.

I looked up my likely tire choice. It weighs two pounds less in 235/85R16 compared to 235/80R17 (44 pounds vs. 46 pounds). Lowering un-sprung weight by installing a lighter tire and wheel with a taller sidewall provides advantages, including an efficiency advantage.

lighter wheels always helps

 

[Kit352]

I would be surprised if a 16in rim would fit. Ev's have generally large front brakes to help with the added weight and recharge so fitting the inner diameter of the rim becomes a challenge. Personally I would love a 16 but it's decline in popularity has really reduced the options available for it in the past years. I think 17 will be as small as they can go. Hopefully it's a standard size so other makers rims could potential swap on without fuss.

 

[AZFox]

I would be surprised if a 16in rim would fit. Ev's have generally large front brakes to help with the added weight and recharge so fitting the inner diameter of the rim becomes a challenge.

I asked this specifically. Here's the agent's answer:

You can choose to outfit your Slate with nearly any wheel type. The All-Terrain tire of 215/85R16 (30.4" x 8.5") is applicable to the built. We utilize such a common bolt pattern many different styles can be used to outfit a Slate.​

It's "applicable to the built"!

Despite the agent's affirmative reply, I agree that 16-inch wheels possibly won't work because they could interfere with what's behind the wheel.

Ultimately it's a deliberate design choice. Either they are designing it to accept a 16-inch wheel or they aren't.

 

[AZFox]

Personally I would love a 16 but it's decline in popularity has really reduced the options available for it in the past years.

Fortunately there are still lots of 16in tires to choose from.

https://tiresize.com/tiresizes/235-85R16.htm
https://tiresize.com/tiresizes/215-85R16.htm

 

[AZFox]

Whelp, so much for the skinny tires on 16-inch wheels idea...​

​

On my third attempt someone (Josie) finally fully understood my question about whether 16-inch wheels would fit.​

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Thank you so much for clarifying. 17'' wheels are the minimum size wheel, that's a great question!​

 

[cadblu]

Curious about wheel spec. What bolt pattern and offset is it? Also, can the end user adjust speedo/odometer calibration for change in tire size? OTA update from your phone to adjust in app would be an amazing feature!

Did you ever get a response to your question on speedo / odo calibration? As an FYI, Tesla has addressed this with a built in app on the settings menu. No OTA update required!

 

[AZFox]

Shouldn't an app be able to do that if the device has GPS capability? Enable odo-speedo-setting mode, drive straight forward some distance, save.

 

[5ohbrad]

Did you ever get a response to your question on speedo / odo calibration? As an FYI, Tesla has addressed this with a built in app on the settings menu. No OTA update required!

I think they are still holding out on those particulars. I did learn something that was pretty encouraging- they are striving for 150 miles of range WITH 32” tires, implying that they are perhaps being a little conservative on range goals. Aluminum wheels and smaller tires should be worth a bit more range.

 

[AZFox]

I did learn something that was pretty encouraging- they are striving for 150 miles of range WITH 32” tires

You asked a good question. Unfortunately there's no way the answer will turn out to be true.

Presumably the Slate Truck, being an EV, was range-tested while equipped with stock-sized "EV tires" that have been engineered for low rolling resistance.

Tire rolling resistance affects range severely. According to the EPA (so it must be true! ) rolling resistance can account for up to 23% of lost energy efficiency in EVs. Tire manufacturers claim that "EV" tires can reduce rolling resistance by 10-20%.

All-Terrain tires are inherently heavier. The extra weight is "rotating mass". Extra rotating mass also lowers range. For reference, one pound of rotating weight is considered equivalent to about three to ten pounds of static weight.

Increasing tire diameter also has a gearing effect that negatively affects range, performance, ride quality, and parts wear-and-tear. More about that is in this post.

 

[AZFox]

Here's some food for thought on the matter.

Let's say you have two sets of stock-size tires:

Michelin CrossClimate2 - Low Rolling Resistance, Weighs 30 pounds​

​

Falcon WildPeak AT4W - High Rolling Resistance, Weighs 41.9 pounds​

The WildPeak is a same-size tire that adds 47 pounds(!) of rotating mass in addition to increasing rolling resistance.

Swapping in those WildPeaks, even though they're the same tire size, will severely decrease range.

 

[sodamo]

Wow, educational for me. Efficiency over style 😁