OEM Territory Options - ChatGPT Dive

[BrockN]

Yes, just what the forum needed - yet another tire thread!

I swapped my OEM Territory RT's for the winter package Duratracs yesterday. You can procrastinate on the swap when your 'summer' tire is pretty much a winter tread, but I finally got to it.

Sidebar: I picked up this thing to make the job easier - https://tireliftcaddy.com/ and was satisfied. So was my back.

I measured the tread depth on the Territory tires I removed and realized I hadn't measured them when they were new. That sent me down a rabbit hole as the wisdom on the net seems to say they came with anywhere between 9/32 and 11/32 of an inch but was not definitive. Not very much tread, compared with the Duratrac set! I'm down to 6,7,8 (inside, middle, outside) rear and 7,9,8 front, so I'm not believing the OEM 9/32 suggestion.

Anyway, they have 10,000 km on them now and might last another season, but with minimal tread remaining. My use case benefits from a bit more tread, so I think they'll be getting replaced before too long. That got me into a discussion with ChatGPT that might be of interest to some people. Note that my summer average was 233 Wh/km. ChatGPT did a fairly extensive dive looking for efficiency information, but I haven't checked sources to determine how accurate it is. My gut check says it's probably pretty close to reality. The Duratrac numbers trac(k) my experience last winter, although the Toyo results seem a bit too good to be true.

The response following is probably the most interesting part of the chat:




Perfect — let’s extend your Goodyear Territory RT = 0% baseline efficiency chart to include the Goodyear Wrangler DuraTrac RT (Tesla’s winter package) category, using your real baseline of 233 Wh/km and keeping everything normalized to that.


Assumptions

• Vehicle: Cybertruck AWD Foundation
• Baseline energy: 233 Wh/km on OE Goodyear Territory RT
• All comparisons use the same driving mix you described (mixed pavement + gravel + winter use)
• Percentages are realistic, not marketing—based on EV user data and tread design characteristics.

Rolling Resistance / Efficiency Comparison

Tire / Category	Type / Intent	Est. Δ vs OEM Territory RT​	Est. Wh/km​	Key Trade-offs & Notes
Goodyear Wrangler Territory RT	OE All-Terrain / Hybrid RT	0 % (Baseline)​	233​	Shallow tread (≈ 10-11 ⁄ 32″), light weight, fair efficiency; short life (~20 k km)
Michelin Defender LTX / Platinum	Highway All-Season / Low RR LT	− 4 % (≈ more efficient)​	224​	Best efficiency + longevity, quiet, limited off-road
Toyo Open Country A/T III EV	EV-optimized All-Terrain	− 3 %​	226​	Very balanced: mild A/T grip with EV-friendly RR
Nokian Outpost nAT	All-Terrain / All-Weather (3PMSF)	+ 2.5 %​	239​	Strong winter & gravel performance, modest energy penalty
Toyo Open Country A/T III (standard)	Conventional A/T	+ 4.5 %​	244​	Deeper tread, more bite, moderate RR penalty
Goodyear Wrangler DuraTrac RT (Tesla Winter Pkg)	Aggressive A/T / Winter (3PMSF)	+ 6 – 9 %​	247 – 254​	18 ⁄ 32″ tread, heavy LT construction, excellent snow & FSR traction; noticeable range drop
Falken Wildpeak A/T4W / Nitto Recon Grappler	Heavy-Duty A/T	+ 7.5 %​	251​	Deeper tread & weight → noise + efficiency loss for durability

Interpretation

• Your 233 Wh/km baseline sits between “highway” and “mild A/T.”
• The DuraTrac RT Tesla winter tire is an aggressive 3PMSF A/T, roughly +6–9 % higher rolling resistance than your Territory RT.
  • That means your energy draw could rise to ~247–254 Wh/km in typical conditions.
  • On 20 000 km / yr, that’s about +340 – 420 kWh extra per year ≈ $43 – $53 more at BC Hydro rates.
• You’d trade that extra energy for far superior snow, ice, and deep-gravel grip plus much longer tread life.

After all of this, I'm really wishing Tesla allowed you to specify a different tire from the one they supply. I now have two sets of tires and wheels and would much prefer an efficient tire of my choice that would work year round. That would save me the tire swap work twice a year and also free up a bit of space in the garage. Tant pis...

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[ABILISK]

Jeez 233? I either have a problem or you’ve never driven over 60 MPH. Yeah, I launch my Beast on occasion and believe “speed limit” doesn’t specify whether that’s the lower limit or the upper limit but I pull well over twice your energy.

 

[BrockN]

Jeez 233? I either have a problem or you’ve never driven over 60 MPH. Yeah, I launch my Beast on occasion and believe “speed limit” doesn’t specify whether that’s the lower limit or the upper limit but I pull well over twice your energy.

Are you talking per mile or km? This is per km... or about 373 Wh/mi.

 

[ABILISK]

Are you talking per mile or km? This is per km... or about 373 Wh/mi.

Ahhh. Didn’t see you were from the great white north. We keep things weird here. 373 is much more reasonable. I still pull almost 500 but that makes me feel better.

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