Michelin Defender LTX Platinum

[SeaGeo]

When I look up my R1S in the Costco system it comes back without any available tires, but when I look it up by 275/65/R20 I have lots of options. Is that just me?

There's the side, the load index rating, and the speed rating. Ideally you want a 275/65r20 with a load rating of 116 or greater (or potentially an LT tire). If it's an LT tire, you apparently need to run the pressures a be higher than what your door jam shows (like 52 psi).

The OEM tires some with an H speed rating IIRC, which is good for 130 mph. However, the truck has a governor set to ~112 mph, so practically speaking you can drop down to an S, T, or U speed rating with near zero risk. However, Costco may not realize that. So at the end of the day, you may be better off searching for tires in the specific size but without the Rivian entered into the system and manually filter by the appropriate load ratings and speed ratings.

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[jemkewl]

Nitrogen is a gimmick.

On large temp swings between days, the nitrogen filled tires were less impacted by the temp swings (pressure consistency). I've never paid for nitrogen and never would as the better rolling resistance and less degradation claims are unfounded.

 

[rodhx]

FWIW the online Costco price is the same as Tirerack/discounttiredirect at about $424/ea

 

[Ronimal]

Any comments on snow performance on these vs the stock ATs? So far these seem to check all the boxes for looks, range, and (this is the big one for me) noise reduction.

I find the stock ATs are fine for MN winters, hoping these have similar snow performance and don’t slide all over the place??

 

[ndmiller]

Nitrogen is a gimmick.

While I understand what you're saying, let me expound.

Air is already 78% Nitrogen and 21% Oxygen with the remaining 1% other gasses and aerosols of particulate matter. Paying or going somewhere that claims that getting a tire from 78% to 100% Nitrogen is meaningful is not a great idea simply based on the original content of air. Then comes the scientific measurement that would be equally disappointing showing no significant measurable performance difference in 78% and 100% Nitrogen in a tire.

 

[ksurfier]

Any comments on snow performance on these vs the stock ATs? So far these seem to check all the boxes for looks, range, and (this is the big one for me) noise reduction.

I find the stock ATs are fine for MN winters, hoping these have similar snow performance and don’t slide all over the place??

Only anecdotally, Tire Rack has a review of someone returning them due to extremely poor performance, looking at the tread, reminds me of a cargo tire, meant for driving straight on the highway and little else, pretty sure there are 15-20 better options for the Rivian than the platinums, namely the Deferent LTX M/S or M/S2 if you want better performance and slightly worse efficiency...

 

[caiudalmau]

H

You guys obviously missed my review. The Costco website shows these tire are "temporarily out of stock" That's because they were just released in November 2023. Not all sizes are available yet, like the popular 275/60/20's.
I just bought a set of 285/60/20's and I'm over the moon happy with them. Costco is the best place to order them from, they have the most stores nationwide, best no questions asked warranty and service.
Here are my pic's, search for my review on these. Yes these are the new Platinums.
Yes they fit without any rubbing. Yes they are fantastic.

How has you efficiency changed with these?

 

[HumanGenome]

Anyone getting steering wheel shake with these tires?

I just swapped 21" to 20s I bought off of a Rivian employee and installed Michel LTX Defender Platinums on them. The steering wheel would shake violently above 65 mph so I took it in to Rivian and they are saying it's the weighting and tires are not balanced. They did a balance and the issue persists. They don't know what to do at this point.

 

[Mathme]

I've been watching these tires for a while and others have said they are hard to keep balanced. I think part of it is in the design of these tires...I don't think once these things wear you'll be able to keep them balanced. Once I saw the first 45 seconds of this review, I moved onto other replacement options as this may explain the difficulty balancing...

 

[ksujeff99]

Anyone getting steering wheel shake with these tires?

I have 6k on mine. No vibration or shaking issues.

 

[Gamial]

I have 6k on mine. No vibration or shaking issues.

I have 9k on mine and haven't any shaking or vibration issues at all either.

 

[HumanGenome]

I have a 1000 mile trip coming up so I'll see how it goes after the road force balance.. not really sure what to do if it still shakes after that :/

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