Range Identical for Dual Motor R1S / R1T?

[TexasBob]

Looking at the now-posted official EPA numbers for the Dual Motor R1S / R1T on fueleconomy.gov I noted that the R1T and R1S are identical and the 7 mile range differential has now disappeared. Strange. Also, Rivian has still not updated its configurator (still showing 340 and 350 for the S / T respectively).

Official numbers 21" tires - 352 miles; 22" tires - 341 miles (307 miles for 20" tires but only showing for R1S on EPA site).

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[NY_Rob]

How can the R1T on 22"s with a 135kWh pack @ 44kWh/100 mi indicate a 341mi range
and..
An R1S also on 22"s with the same 135kWh pack @ 45kWh/100 mi indicate a 341mi range?

The new math?

I think someone at the EPA made a slight error

 

[Riviot]

How can the R1T on 22"s with a 135kWh pack @ 44kWh/100 mi indicate a 341mi range
and..
An R1S also on 22"s with the same 135kWh pack @ 45kWh/100 mi indicate a 341mi range?

The new math?

I think someone at the EPA made a slight error

Because it isn't 135kWh.

 

[Dark-Fx]

Because it isn't 135kWh.

EPA efficiency numbers include charging losses and Rivian can fudge battery capacity a little to make the range the same between models.

 

[NY_Rob]

^ Battery size is not important here, point being you have two vehicles with the same size/capacity battery pack:
One travels 100mi using 44/kWh
One travels 100mi using 45kWh
They can't possibly have the same range from the same size battery. One vehicle is less efficient than the other and will have 6-7mi less range than the other assuming a 135kWh pack capacity.

 

[TexasBob]

^ Battery size is not important here, point being you have two vehicles with the same size/capacity battery pack:
One travels 100mi using 44/kWh
One travels 100mi using 45kWh
They can't possibly have the same range from the same size battery. One vehicle is less efficient than the other and will have 6-7mi less range than the other assuming a 135kWh pack capacity.

Manufacturers are allowed to voluntarily reduce the range below the tested number, so they may be doing that on the T. ¯\_(ツ)_/¯

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