20” All-Terrain or 22” Sport wheel upgrade included - Which is better 20 or 22

[Lmirafuente]

With a Car weighing close to 6klbs I am thinking the following.

1. Range? EH, weight is weight, rotating mass is a thing especially inboard motors but the difference between a 70 to 80lb wheel setup to something 65 to 70lbs is while a big difference in rotating mass, negligible maybe?

2. Cornering on a 3 Ton car should definitely be considered... ahaha.
3. I think more or less wear is a factor for any tire with that weight.

I am really debating getting the 22" because they look badass and the 30 or 40 miles of range might be an issue at the end of the day but nothing can't be solved by getting a forged light set of wheels.

Thanks for all the feedback!

I love cornering so I will stay with the 22" but will probably buy the 20" AT if and when going off-roading or when more driving is needed when this pandemic is behind us...so for now 22"....thanks again to you and to Cohall, and ElectricTrucking for your comments!

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[MReda]

I can't see how to do this in the online Configurator. I entered my preferences and hit Save, and now I can view what I saved but see no way to modify it.

Also, is anyone else miffed that the 20" AT is a $3500 upcharge vs. the "standard" 21" AS? I can't for the life of me understand why the smaller wheel is more money. Especially that much!

They mentioned that the 20s were forged, and they didn't say that for any of the other wheels, so it is possible that it is a noticeably better wheel - better strength to weight, which is great for both efficiency and rough conditions. Still, I would think that would make them a $3500 set of wheels, not a $3500 upcharge over standard wheels.

 

[time]

I recently put 20's on my Tundra and wish I had stuck with 18's. Big difference in ride quality IMO. I wonder why Rivian decided 20 would be their smallest wheel.

 

[godfodder0901]

I recently put 20's on my Tundra and wish I had stuck with 18's. Big difference in ride quality IMO. I wonder why Rivian decided 20 would be their smallest wheel.

Brake rotor size.

 

[twinprice]

I, for one, am having a really hard time figuring out which wheels to go with because there seem to be some major pros and cons with each. So, I would love to hear everyone's opinion to see what I am getting wrong or forgetting. Disclaimer: I know we don't have any actual efficiency or rolling resistance figures yet, and I have watched the Engineering Explained video above.

Here are the Rivian Wheel/Tire options from the Pirelli Press Release:

20": 275/65R20 Dimensions: Diameter: 34.1" Width: 10.8", Sidewall: 7" Circumference: 107", Revs/Mile 592
21": 275/55R21 Dimensions: Diameter: 32.9" Width: 10.8", Sidewall: 6" Circumference: 103.3", Revs/Mile 613
The 22" tires are not specified in the press release...so I assumed the size is the below:
22": 275/45R22 Dimensions: Diameter: 31.7" Width: 10.8", Sidewall: 4.9" Circumference: 99.7", Revs/Mile 636

It has been mentioned numerous times the larger diameter wheels will hurt mileage much more than the smaller diameter wheels but it seems to me that if the dimensions above are correct than it seems it might be the other way around: while the width of all the tires is the same 10.8", The 20" tires are 2.4" taller and have a circumference of 7.3" greater than the 22" wheels. And, would the greater amount of rubber on the 20" tires and forged 20" wheels add more weight to the car as well?

So, is it possible that the 22" wheels/tires are, in fact, more efficient than the 20" wheels/tires? (and the 21" wheels/tires to the 20" wheels/tires as well)

Can you all show me what I am missing?

 

[Gshenderson]

I was in chat with a Rivian rep today and asked whether he had any specs on the 20” “dark” wheel vs. the std 20” wheel. The dark is $1700 more than the std one. He wasn’t help. Just said that it “might be” a different alloy composition. Unfortunately, the dark wheels are not available as of now on the LE.

 

[Lmirafuente]

I, for one, am having a really hard time figuring out which wheels to go with because there seem to be some major pros and cons with each. So, I would love to hear everyone's opinion to see what I am getting wrong or forgetting. Disclaimer: I know we don't have any actual efficiency or rolling resistance figures yet, and I have watched the Engineering Explained video above.

Here are the Rivian Wheel/Tire options from the Pirelli Press Release:

20": 275/65R20 Dimensions: Diameter: 34.1" Width: 10.8", Sidewall: 7" Circumference: 107", Revs/Mile 592
21": 275/55R21 Dimensions: Diameter: 32.9" Width: 10.8", Sidewall: 6" Circumference: 103.3", Revs/Mile 613
The 22" tires are not specified in the press release...so I assumed the size is the below:
22": 275/45R22 Dimensions: Diameter: 31.7" Width: 10.8", Sidewall: 4.9" Circumference: 99.7", Revs/Mile 636

It has been mentioned numerous times the larger diameter wheels will hurt mileage much more than the smaller diameter wheels but it seems to me that if the dimensions above are correct than it seems it might be the other way around: while the width of all the tires is the same 10.8", The 20" tires are 2.4" taller and have a circumference of 7.3" greater than the 22" wheels. And, would the greater amount of rubber on the 20" tires and forged 20" wheels add more weight to the car as well?

So, is it possible that the 22" wheels/tires are, in fact, more efficient than the 20" wheels/tires? (and the 21" wheels/tires to the 20" wheels/tires as well)

Can you all show me what I am missing?

I am curious to the answer To your questions. My LE is equipped with 22”, but I will buy he 20” AT set for off road excursions?

 

[GIJoe]

I, for one, am having a really hard time figuring out which wheels to go with because there seem to be some major pros and cons with each. So, I would love to hear everyone's opinion to see what I am getting wrong or forgetting. Disclaimer: I know we don't have any actual efficiency or rolling resistance figures yet, and I have watched the Engineering Explained video above.

Here are the Rivian Wheel/Tire options from the Pirelli Press Release:

20": 275/65R20 Dimensions: Diameter: 34.1" Width: 10.8", Sidewall: 7" Circumference: 107", Revs/Mile 592
21": 275/55R21 Dimensions: Diameter: 32.9" Width: 10.8", Sidewall: 6" Circumference: 103.3", Revs/Mile 613
The 22" tires are not specified in the press release...so I assumed the size is the below:
22": 275/45R22 Dimensions: Diameter: 31.7" Width: 10.8", Sidewall: 4.9" Circumference: 99.7", Revs/Mile 636

It has been mentioned numerous times the larger diameter wheels will hurt mileage much more than the smaller diameter wheels but it seems to me that if the dimensions above are correct than it seems it might be the other way around: while the width of all the tires is the same 10.8", The 20" tires are 2.4" taller and have a circumference of 7.3" greater than the 22" wheels. And, would the greater amount of rubber on the 20" tires and forged 20" wheels add more weight to the car as well?

So, is it possible that the 22" wheels/tires are, in fact, more efficient than the 20" wheels/tires? (and the 21" wheels/tires to the 20" wheels/tires as well)

Can you all show me what I am missing?

I have the exact same question. Anyone with an idea if this is true. Will the 22" wheels/tires be more efficient than the 20" due to the over all diameter being smaller?

 

[time]

would the greater amount of rubber on the 20" tires and forged 20" wheels add more weight to the car as well

Weight is a big factor right? Forged wheels are typically lighter than alloys and the extra rubber in the taller side walls should weigh a good bit less than the extra weight of the 2" larger alloy rims.

 

[St Bernard]

I, for one, am having a really hard time figuring out which wheels to go with because there seem to be some major pros and cons with each. So, I would love to hear everyone's opinion to see what I am getting wrong or forgetting. Disclaimer: I know we don't have any actual efficiency or rolling resistance figures yet, and I have watched the Engineering Explained video above.

Here are the Rivian Wheel/Tire options from the Pirelli Press Release:

20": 275/65R20 Dimensions: Diameter: 34.1" Width: 10.8", Sidewall: 7" Circumference: 107", Revs/Mile 592
21": 275/55R21 Dimensions: Diameter: 32.9" Width: 10.8", Sidewall: 6" Circumference: 103.3", Revs/Mile 613
The 22" tires are not specified in the press release...so I assumed the size is the below:
22": 275/45R22 Dimensions: Diameter: 31.7" Width: 10.8", Sidewall: 4.9" Circumference: 99.7", Revs/Mile 636

It has been mentioned numerous times the larger diameter wheels will hurt mileage much more than the smaller diameter wheels but it seems to me that if the dimensions above are correct than it seems it might be the other way around: while the width of all the tires is the same 10.8", The 20" tires are 2.4" taller and have a circumference of 7.3" greater than the 22" wheels. And, would the greater amount of rubber on the 20" tires and forged 20" wheels add more weight to the car as well?

So, is it possible that the 22" wheels/tires are, in fact, more efficient than the 20" wheels/tires? (and the 21" wheels/tires to the 20" wheels/tires as well)

Can you all show me what I am missing?

At the LA AUTO SHOW the 22” were 275/50R22. I looked at the original Video and that is what the 22” show. I am also confused as I always erroneously thought a 20” tire was not as tall as a 22’. We need someone who understands all of this to explain.

 

[jdhiker23]

The 22" tires are not specified in the press release...so I assumed the size is the below:
22": 275/45R22 Dimensions: Diameter: 31.7" Width: 10.8", Sidewall: 4.9" Circumference: 99.7", Revs/Mile 636

I’m betting the 22” tires are bigger...
22": 275/50R22 Dimensions: Diameter: 32.8" Width: 10.8", Sidewall: 5.4" Circumference: 103.1", Revs/Mile 615
The same logic applies, but the difference would be smaller if I’m right about the dimensions. Either way, I’m pretty sure the 21” tires will have better efficiency/range than either the 20” or 22”, based on the Pirelli press release (otherwise what is the point of that option at all).

 

[ElectricTrucking]

The 20" are 34.1 ". Tallest of the 3. Also 7" of sidewall.

 

[skyote]

At the LA AUTO SHOW the 22” were 275/50R22. I looked at the original Video and that is what the 22” show. I am also confused as I always erroneously thought a 20” tire was not as tall as a 22’. We need someone who understands all of this to explain.

First number is width of the tire in mm (275). Second number is the percentage of the width that makes up the sidewall (multiply this percentage by the first number to get sidewall size). Third number is the wheel size in inches.

(Sidewall size x 2, then converted from mm to in) + wheel size = tire diameter.

Gotta love the mix of metric & imperial for tire math, right? Bigger wheels don't mean bigger tires...often the bigger the wheel, the lower profile the tire (smaller sidewall).

 

[Lmirafuente]

I’m betting the 22” tires are bigger...
22": 275/50R22 Dimensions: Diameter: 32.8" Width: 10.8", Sidewall: 5.4" Circumference: 103.1", Revs/Mile 615
The same logic applies, but the difference would be smaller if I’m right about the dimensions. Either way, I’m pretty sure the 21” tires will have better efficiency/range than either the 20” or 22”, based on the Pirelli press release (otherwise what is the point of that option at all).

Not sure if anybody noticed in the configurator, when switching between wheel selections, the 20” bumped the overall height of the vehicle. I know it is a rendering...but......

 

[DucRider]

The 22s are also the "grippy" street tire. This also translates to a range hit.

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