Most efficient 20" tire?

[Supratachophobia]

Sounds like the 2025 Kentucky Derby winner!



https://www.rivianforums.com/forum/...ciency-comparison-ram-as-ram-at-oem-as.28080/

You have to control conditions, or at least state them, for comparison sake. We all know battery and external temps make the biggest difference, so please post those when testing. Below are conditions from my testing, I use the same loop when comparing tires.

-All 275/60R20 tires
-23.9mi round trip
-66mph highway speed
-All purpose/standard height/moderate feel/standard regen
-Battery temp: 73-82°F
-Exterior temp: 59-75°F
-Motor temp: consistent 140s front, 130s rear
-Tire pressure 48psi cold, 52psi warm
-AC on 65°F, recirc, 1 speed

Don't forget at least 500 miles on them. Lots of people saying range gets better worse after the first few hundred.

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[danielvdm]

I just put some Defender LTXs on my Gen 1 R1T Quad. 1.6 mi/kWh driving from SLC to Reno yesterday haha. But into some pretty bad headwinds and also probably averaging 85mph. Hoping to see some better range at CA highway speeds and less wind!

 

[HyperionMark]

I just put some Defender LTXs on my Gen 1 R1T Quad. 1.6 mi/kWh driving from SLC to Reno yesterday haha. But into some pretty bad headwinds and also probably averaging 85mph. Hoping to see some better range at CA highway speeds and less wind!

That sounds like pretty good efficiency for headwinds with those speeds.

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