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AbhorViolence

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So actual efficiency for test #3 after adjusting for size difference is 1.94.
About +13% improvement over the comparable (same wheel) test #2.
If I get similar improvement from my stock 20s I'll get as much as 354mi (in conserve).
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Seeing these results reiterates a question I've had for a while: why did Rivian partner with Pirelli and not Michelin for their tires?

Between the Defender and the BF Goodrich KO2, they could have helped develop some incredible EV specific tires. Instead we got inferior, overpriced Pirelli tires that most owners are more than happy to replace.
 

R1Thor

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Seeing these results reiterates a question I've had for a while: why did Rivian partner with Pirelli and not Michelin for their tires?

Between the Defender and the BF Goodrich KO2, they could have helped develop some incredible EV specific tires. Instead we got inferior, overpriced Pirelli tires that most owners are more than happy to replace.
We'll probably never know, but typically there's a LOT of negotiation, bids, and proposals to sift through. You're also gambling as to whether or not any of the other OEMs wanted to partner with Rivian (as a startup, that's a risk for them--invest in developing a tire line that may never sell in volumes to justify the R&D and spinning up manufacturing molds and lines to build).

Just be glad they DID find someone to partner with, who DID do the R&D to develop tires options.

You're not wrong to want more range and better performance, but SOMEONE had to do it first. The iterative improvements come with time and others copying Pirelli's homework and adding to it.

Sir Isaac Newton, “If I have seen further, it is by standing on the shoulders of giants.”

We develop better tech by developing tech and then improving on it. Greatness never comes overnight and perfection is a never-ending pursuit.
 

LL75

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Seeing these results reiterates a question I've had for a while: why did Rivian partner with Pirelli and not Michelin for their tires?

Between the Defender and the BF Goodrich KO2, they could have helped develop some incredible EV specific tires. Instead we got inferior, overpriced Pirelli tires that most owners are more than happy to replace.
Yeap. I personally hate Pirelli tires. overpriced crappy tires imo.
 

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Great information here. Slightly separate but related question. I'm looking at your AW01 wheel and noting the different width/offset VS the AW10 and curious if you can comment on any range testing for the AW01 and also in general the added width/lower offset choice for the AW10 ... reasoning/impact? Aesthetics on offset aside is there any other validated reasons for the change?

Also, any bronze AW01 sets in stock currently?

EDIT: I'm looking at 20" wheel options only

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eskudo12791

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Great information here. Slightly separate but related question. I'm looking at your AW01 wheel and noting the different width/offset VS the AW10 and curious if you can comment on any range testing for the AW01 and also in general the added width/lower offset choice for the AW10 ... reasoning/impact? Aesthetics on offset aside is there any other validated reasons for the change?

Also, any bronze AW01 sets in stock currently?

EDIT: I'm looking at 20" wheel options only

Cheers!
A little father down the page for the AW01,
"This is a Pre-order. You will be charged only the deposit today."
 

Mathme

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The first thing I noticed about this test is the ATs were run in a 65-series height (34" overall diameter) and the AS's were run in a 60-series (33" overall diameter) -- all on 20" wheels. Even in this unscientific test, they could have tried the Michelin Defender LTX Platinum (a brand new tire) that's offered in the OEM 275/65/20 size.
 
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Atomic Wheels

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Great information here. Slightly separate but related question. I'm looking at your AW01 wheel and noting the different width/offset VS the AW10 and curious if you can comment on any range testing for the AW01 and also in general the added width/lower offset choice for the AW10 ... reasoning/impact? Aesthetics on offset aside is there any other validated reasons for the change?

Also, any bronze AW01 sets in stock currently?

EDIT: I'm looking at 20" wheel options only

Cheers!
[AW01] is made in fully factory specs with increased payload, while [AW10] is wide and with a more aggressive offset for a different look.

[AW01] will be in stock around the end of February. We have not done any tests with them, because it will be 1st batch when they arrive. I see only 1 set (4 rims) in satin bronze left that is not pre-ordered.

Feel free to place a pre-order to make sure the set is reserved under your name. When it is ready for shipping we will be in touch and complete the purchase.

Please let us know if you have any questions!
214.225.8585
[email protected]
www.atomic-wheels.com
 

mabowden

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[AW10] 20x9, equipped with brand new 275/60/R20 MICHELIN DEFENDER LTX M/S2 275/60/20

69.4 LBS each wheel:

IMG_6827.JPG
Hmmm- this is super interesting as the stock 21" with tires is 85 lbs. I would argue the stock 21's with aero removed are still likely a bit more aero friendly, but an 15lb rotating mass reduction is a hell of a lot. I bet this setup is as efficient as the 21's, without the crazy expensive tires. IMHO looks better too.
 

KimBrennan

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I wish there were more color choices than the 3 you offer. I'm partial to the copper wheels I have on right now, and not ready to spend another few grand on lighter wheels (at least not this quarter).
 

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I wish there were more color choices than the 3 you offer. I'm partial to the copper wheels I have on right now, and not ready to spend another few grand on lighter wheels (at least not this quarter).
Refinishing rims to any color you prefer is always an option. It is not expensive these days. Especially with [AW10] that has a center cap that is made out of aluminum, without any plastic, it is a pretty easy and straightforward thing :)

We also can make any color, but it will be a custom order and the lead time will be up to 10 weeks :)
 

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Hello all,

As promised, we have completed the range and efficiency tests to provide you with numbers that are close to real-life conditions.

Today we are going to show you the range test for the following sets:

OEM 20" All-Terrain Dark set, equipped with 275/65/R20 Pirelli Scorpion All Terrain Plus tires, with ~26000 miles on them
[AW10] 20x9, equipped with brand new 275/65/R20 Pirelli Scorpion All Terrain Plus tires
[AW10] 20x9, equipped with brand new 275/60/R20 MICHELIN DEFENDER LTX M/S2 275/60/20


[AW10] + Factory-sized OEM Pirelli tires:
DSC03531.jpg


[AW10] + MICHELIN DEFENDER LTX M/S2 275/60/20:

DSC03544.jpg


Let's start with a simple thing - weighting each set

OEM 20" All-Terrain Dark set, equipped with 275/65/R20 Pirelli Scorpion All Terrain Plus tires, with ~26000 miles on them.

82.8 LBS each wheel:

IMG_6820.JPG

[AW10] 20x9, equipped with brand new 275/65/R20 Pirelli Scorpion All Terrain Plus tires.

77.8 LBS each wheel:

IMG_6817.JPG

[AW10] 20x9, equipped with brand new 275/60/R20 MICHELIN DEFENDER LTX M/S2 275/60/20

69.4 LBS each wheel:

IMG_6827.JPG


About the R1T we used to do tests:


2022 R1T adventure
No Reinforcement shield
35000 miles on the clock
Quad with Large pack

About the test:

  1. Loop-style ~25-mile drive (~12.5 mi each way) to minimize wind and terrain impact
  2. 70 mph by GPS
  3. All-purpose mode
  4. Standard Height
  5. Soft Ride
  6. High Regen
  7. Pressure in tires between 48 and 50 psi
  8. Climat set to 70F at minimum speed
  9. The tonneau cover is closed
  10. The only driver in the car
  11. No spare in the compartment but all the stuff that is usually traveling in the truck is not taken out
Test #1
Factory set
Temperature outside - 23F
Battery at 67F
Considerably noticeable wind
24.3 mi driven
Average speed 66mph
22 minutes long

The final efficiency is 1.63mi/kWh

Considering the weather, and adding 20% that we are losing during cold weather. That means in good conditions efficiency would be 1.956 mi/kWh which aligns with lifetime calculation. That means the range in All-Purpose will be 264 mi, which again aligns with claimed by Rivian numbers for this setup.

IMG_6815.JPG
IMG_6816.JPG


Test #2
[AW10] 20x9, equipped with brand new 275/65/R20 Pirelli Scorpion All Terrain Plus tires.
Temperature outside - 28F
Battery at 64F
Considerably noticeable wind
24.3 mi driven
Average speed 66mph
22 minutes long

The final efficiency is 1.72mi/kWh

Considering the weather, and adding 20% that we are losing during cold weather. That means in good conditions efficiency would be 2.064 mi/kWh. That means the range in All-Purpose will be 278 mi.

The purpose of this test is to show, that when you're switching to [AW10] with factory AT tires you won't experience a bigger hit in range, more to say, you will see a small increase in efficiency due to saving a bit of total weight. A wider rim and more aggressive offset are not affecting efficiency that much if at all.

IMG_6822.JPG
IMG_6823.JPG


Test #3
[AW10] 20x9, equipped with brand new 275/60/R20 MICHELIN DEFENDER LTX M/S2 275/60/20
Temperature outside - 34F
Battery at 62F
Considerably noticeable wind
25.1 mi driven
Average speed 68mph
22 minutes long

The final efficiency is 2.04mi/kWh

Considering the weather, and adding 20% that we are losing during cold weather. That means in good conditions efficiency would be 2.448 mi/kWh. That means the range in All-Purpose will be 330 mi. Theoretically, in this case, the range exceeds the claimed range when your R1 is equipped with factory 21-inch wheels, even in All-Purpose mode.

IMG_6835.PNG

IMG_6836.PNG


We also can say, that a 0.5" wider rim with a more aggressive offset does not affect efficiency, because you are saving unsprung weight on a fully assembled wheel due to a lighter fully forged [AW10].

We are preparing a video version of the test, with full-length drives for those who will think we are manipulating with numbers.

[AW10] 20x9 is in stock in 3 colors:
Satin Bronze
Satin + Transparent Black
Satin Black

Ready for shipping.

Please let us know if you have any questions!
214.225.8585
[email protected]
www.atomic-wheels.com
Would these tires for the R1S as well? Or would that be different? Also, is it possible to get a different RIM design/color instead of the gold color?
 
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Atomic Wheels

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Would these tires for the R1S as well? Or would that be different? Also, is it possible to get a different RIM design/color instead of the gold color?
R1T and R1S have absolutely the same rims and tires. Our rims are also designed for both models.

As of now, [AW10] 20-inch is in stock only in 3 colors:
Satin + Transparent black
Satin Black
Satin Bronze

Later in February also Gloss Black and Titan colors will be available. You also can place pre-order to make sure it is reserved to your name.

Please let us know if you have any questions!
214.225.8585
[email protected]
www.atomic-wheels.com
 

jambaman84

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Riviaenz

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So no. You just have to do the 3% math which I did. But thanks for clarifying that you did not do the conversion.

It's an interesting test, because I'd like to switch from the factory ATs to road tires and was hoping to see an efficiency gain and it looks like there should be one. In fact close to 13% Which makes sense.

Personally I'm looking for the lightest road tire in 275/65/20
Given the distance is the same, you simply need to focus on the energy used. The larger tires show 15 and 14kWhr used while the smaller 275/60x20 size show 12kWhr over the same test distance in similar conditions. While not super precise there’s enough of a difference (10-20% less energy) to merit consideration.

In fact I had made the switch back in October with Nokian Outpost nAT 275/60x20 on Rivian AT wheels. The benefit of going from 22” Sport Bright with Pirelli Scorpion Riv spec tires is that I didn’t have to have my R1T reprogrammed. As Atomic Wheels asserts, the diameter is effectively the same as that of the 22”, so much so I get the same variance when I run by a speed camera with the 22” vs. my 20” (1mph slower than indicated with either one). Plus I too have noticed better efficiency with the 20” on long trips. I’ll get a better idea as I take more road trips. While I was initially a bit disappointed by the higher road noise from the Outpost nAT (even when compared to stock Pirelli AT 20” — I had a R1T loaner with AT so I had a Pirelli AT vs. Nokian Outpost nAT comparison opportunity) I’ve been extremely satisfied with their winter traction and better efficiency vs. the 275/65x20 size.

I do love the look of the bronze AW wheels though! In hindsight I wish I’d gone with that look vs. Rivian’s AT 20.
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