June 6 2024 Update: There's now a 20" 275/60R20 OEM Tire: Goodyear Wrangler Territory AT
Likely to have same/similar MPK to the 21" OEM, also looks like Rivian will discontinue the 21" option:
Spotted in March 2023:
Rivian R1S Test Car seen with Goodyear Wrangler ATs
Update: A great article...
Has anyone installed the Michelin from Costco (club exclusive). Searched forums but didn’t see anything.
it’s 116H, so the correct load rating.
Also appears to be extremely light weight (40 pounds).
Overall Diameter (in)
33.0
Max Load, Single (lbs@psi)
2756 @ 50
Sidewall
Black Sidewall...