Mickey Thompson Baja Boss 20" AT Tires Installed -- Like Nebraska, honestly, it's not for everyone...

[EdwardM2005]

Ok, the Rivian R1S was a little dirty so had to take it out for a quick exterior wash.
The following pictures should help with any questions or stir more: Shared-to-Internet. And I thought a little Video might also help.

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[Jayhawkeye]

Thank you for sharing! Those look sharp!

 

[ksurfier]

Unfortunately I think I figured out why OP got the result he did, due to Denver’s high elevation, aero drag is a bit less up there (maybe 0.3 MPK less?), so any of us at sea level can likely only expect around 1.7 MPK at 65 mph, would be great to get a similar test near sea level with this setup…

 

[EdwardM2005]

Correct, my Mile per Kilowatt is about 1.9 average. Going from Edwards to Denver, last week, the two uphill runs, Vail to top of Vail Pass then Dillon up to the Eisenhower/Johnson tunnels, about 50 miles cost me over 110 miles in energy at the speed limit. It was a nice surprise to find Charge Point Fast Chargers in Georgetown. Otherwise, I would have been pulling into Denver at about 25 miles range which does NOT make my Bride feel comfortable and has little faith in the Riv's ability to predict miles available for trips.

Talking to the Denver Service Manager on other related/non-related issues, he told me the R1S is not designed/engineered for 22" all terrains so we have to figure out the energy consumption ourselves and Beware!! EVERYTHING effects the way we use energy, wind/rain/sun/dust/cold/warm and a host of unknown factors.

 

[opnwide]

Unfortunately I think I figured out why OP got the result he did, due to Denver’s high elevation, aero drag is a bit less up there (maybe 0.3 MPK less?), so any of us at sea level can likely only expect around 1.7 MPK at 65 mph, would be great to get a similar test near sea level with this setup…

I’m sure there’s some truth to this. However, it seems the 60-65mph is an efficiency sweet spot. I’m noticing a much bigger drop off at 75-80mph. Also, getting the heavier LT’s rolling from a stop takes up some “fuel”, so my in-town efficiency is lower. I’m lovin’ the tires though so far. They look “tough” too.

 

[ksurfier]

I’m sure there’s some truth to this. However, it seems the 60-65mph is an efficiency sweet spot. I’m noticing a much bigger drop off at 75-80mph. Also, getting the heavier LT’s rolling from a stop takes up some “fuel”, so my in-town efficiency is lower. I’m lovin’ the tires though so far. They look “tough” too.

Sounds like they are a great setup for you…a nice benefit of the LT (80 PSI) is that you have a huge window of acceptable pressure ranges (say 45 - 80 psi), setting them at 63 psi basically means you don’t need to worry about it all, going to be minimal changes with temp/pressure…none of which will affect tire performance much at all…

 

[k3g]

However, it seems the 60-65mph is an efficiency sweet spot. I’m noticing a much bigger drop off at 75-80mph.

This is very true regardless of tire choice. I took my stock 20's cross country, and followed an older XJ the whole time. We didn't go quicker than 65 the entire trip, which kept my efficiency up around 2.2-2.3 mpk. One of the days I drove without him and set the cruise at 80, immediate drop to 1.8mpk.

 

[EdwardM2005]

Just a little Shout Out. I saw the
Mickey Thompson Baja's yesterday on a Ford F-150. What a standout profile. My Bride said we need to get those when the Toyo's wear out. Great Choice!!

 

[opnwide]

A four ton SUV with 67lb LT’s smoked a brand new paper-plated “D.B.” in a Mercedes SL convertible with the top down in 55 degree rainy weather today.

…carry on.

 

[digitalwizard]

I can also report that they do great in a little bit of mud ;-)

 

[opnwide]

I can also report that they do great in a little bit of mud ;-)

Not a problem for the Alabama muck! So cool.

 

[ksurfier]

Not a problem for the Alabama muck! So cool.

How's it going with the Mickey's? Any longer term efficiency update for the masses?

 

[opnwide]

How's it going with the Mickey's? Any longer term efficiency update for the masses?

Thanks yes. Almost 4000 miles on them and really happy. On the OEM Pirelli AT’s over 14 months I averaged 2.14. I’m now at 1.87 on the LT Mickey Thompson’s strictly on the “B” odometer I reset when I got em. So about a 12% hit I’d estimate. They are outstanding in the wet, much better in the snow than the OEM’s and I’m anxiously awaiting the high country snow melt for some off-roading. Hoping to get to Moab later this season too. I’ve had them on some easy off-roads but nothing technical yet. Will be rotating at 5000 miles and wear so far is even/good. I also love the aggressive sidewall looks FWIW. More to come…

 

[ksurfier]

Thanks yes. Almost 4000 miles on them and really happy. On the OEM Pirelli AT’s over 14 months I averaged 2.14. I’m now at 1.87 on the LT Mickey Thompson’s strictly on the “B” odometer I reset when I got em. So about a 12% hit I’d estimate. They are outstanding in the wet, much better in the snow than the OEM’s and I’m anxiously awaiting the high country snow melt for some off-roading. Hoping to get to Moab later this season too. I’ve had them on some easy off-roads but nothing technical yet. Will be rotating at 5000 miles and wear so far is even/good. I also love the aggressive sidewall looks FWIW. More to come…

Best looking setup for sure, the range hit is reasonable too…nice!

 

[EdwardM2005]

Well Done - Mud Fun!! Keep us updated.

I have 12,000 on the Toyo AT Open Country and enjoy the road feel, handling and look. Stopped many times by drivers of all walks asking for more information so they may add to their rides. And energy consumption - mostly highway still at 1.9 miles/kW. Yes, 65-70 MPH is a sweet spot. Wear is even all around, should easily get another 12K from them. Last visit to Denver Service Center - Windshield R&R, Balance and Rotate and the Service Writer said I have excessive 'road force' on what are now, the rear tires. Can anyone share enlightenment about what this is and what to do?

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