Advice on tire selection (20" ATs vs. 22" AS)

[Sattman69]

I considered making a new thread for this, but the tire sizes have different diameter.

The 20's are 1.3" larger than the 21 or 22" tires.
SCORPION™ ZERO ALL SEASON
275/50R22 : 32.8" (*Couldn't confirm the exact size of the Pirelli's, but should be within 0.1")

SCORPION™ VERDE ALL SEASON
275/55R21 116H XL RIVIAN ELECT : 32.8"

SCORPION™ ALL TERRAIN PLUS
275/65R20 : 34.1"

Certainly being .65" taller would hurt range a little. So, getting the 20" wheels, then swapping to something like 275/60R20 would get you to the same height as the others, which would be 33". It could help efficiency and dry handling. But that depends on how much advantage the built for electric claim has.

Also, the 22's seem to be better rated all around (including off road,) than the 21's by Pirelli:
https://www.pirelli.com/tires/en-us/car/catalog/product/scorpion-zero-all-season/275_50-r22
https://www.pirelli.com/tires/en-us...de-all-season/275_55-r21/116h-xl-rivian-elect
https://www.pirelli.com/tires/en-us/car/catalog/product/scorpion-all-terrain-plus/275_65-r20

I feel like I'd rather get something like 285/55R20 with good dry performance for the summers, then maybe the stock for the winters. But again, I really don't know about how much Pirelli did to make it an electric vehicle's tire. Which would make me lean towards the 22's for simplicity.

Do any of you guys know if this 22” tire would fit the Rivian 22” wheels? Some of the specs seem to work but some are off a bit. But could be a interesting look/combination.

https://simpletire.com/brands/toyo-tires/open-country-a-t-iii

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[usofrob]

Where did you find that diameter for the 21? TireRack shows 27.7 as diameter and pirelli site doesn't seem to show diameter.

I don't remember exactly, but discount tire or something. You can also look up other tires with the same size. There's usually very little variance in diameter between tires, but there can be a large difference in section and tread widths.

 

[usofrob]

Do any of you guys know if this 22” tire would fit the Rivian 22” wheels? Some of the specs seem to work but some are off a bit. But could be a interesting look/combination.

https://simpletire.com/brands/toyo-tires/open-country-a-t-iii

Not sure what size you're pointing to, but they have the same size as Rivian's, but they don't have the same weight rating, So, probably a bad idea.

 

[Sattman69]

Not sure what size you're pointing to, but they have the same size as Rivian's, but they don't have the same weight rating, So, probably a bad idea.

I didn’t realize the size didn’t come through. My bad.
I was looking at the 285/45R22 114H XL.

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