Michelin Defender LTX M/S2 (275/55R21)
Michelin

Defender LTX M/S2

275/55R21 · 32.9" Fits R1 All-Season

An all-season tire that fits the R1, around $405 per tire ($1,620 a set), returning 2.22 mi/kWh across 35 owner vehicles on Rivian Roamer.

Rated 4.5 out of 5 4.5 · 10 ratings
Real-world efficiency
2.22 mi/kWh
234,811 mi tracked · 35 vehicles
Average price
$405
per tire · $1,620 / set of 4
Mileage warranty
70,000
miles
Load index
116
R1 minimum is 116

Owner Reviews (10)

Write a Review
AK Sep 2026 Rated 5 out of 5
Verified ownerR1S40,000 mi on this set
Still running on these, 40k miles later
No impact to range in the 1.5 years of driving wirh these tires. No pbservable difference in grip but road noise is slightly lower compared to the stock Pierllis, but not by much.
CryThief Sep 2026 Rated 5 out of 5
Verified ownerR1T24,000 mi on this set
Best truck tire I've ever had
I have nothing but good things to say about these. The efficiency is great for me. Handling is almost as good as stock Pirellis, wet grip is great. Handles light snow with ease. Quiet on highway and around town. At 24k miles they are almost brand new. New they are 11/32, all of mine are 9.5/32 -10/32.
David Geller Sep 2026 Rated 5 out of 5
Verified ownerR1S
Not many choices
There aren’t many choices in this size, so it was an easy choice. But, it’s one that was met with a great tire that, frankly, felt better and more capable than the stock ones that came from Rivian. Very happy with the ride quality and noise. Would recommend and will likely buy them again at some point.
Vipul Sep 2026 Rated 5 out of 5
Verified ownerR1T21,891 mi on this set
Good tire for the price
Replaced the Pirelli Scorpions which wore out at 18,000 miles. Have not noticed any performance degradation in terms of battery efficiency or road noise. Great tires for the price. They look good also.
Gordon Lewis Aug 2026 Rated 5 out of 5
Quitter than stock
I got 24K out the OEM Pirellis. The Michelins are noticeably quitter. Now I can only hear all the wind noise from my early build.
Tom Jul 2026 Rated 5 out of 5
Better than stock… I like them
I had no real complaints about stock Pirellis on my 21s but needed to replace mine after a nail in the sidewall. I went with Michelins (from Costco) because I had good experience with Michelins on previous vehicles. So far (3k miles), I am happy with the switch. Thanks to Rivian Roamer, I can see my efficiency is a little bit better… 2.08 mi/kWh on average vs 2.00 for the Pirellis. I think they are quieter, too. They were less expensive, which makes them a winner in my book.
Ron Peterson Mar 2026 Rated 5 out of 5
Great tire
Alex Feb 2026 Rated 4 out of 5
Solid upgrade
Really nice all weather performance and Ive noticed really consistent performance on conserve mode on the highway. Has handled snow and ice with superior confidence compared to my previous stock perellis. They are a slight bit louder in terms of tire noise but not to a dramatic degree in most scenarios. More noticeable on gravel or poorly build roads but they have better traction and road feel. Got them at costco and rotations/balancing is included. Ive had them about 10k miles and they are not wearing out to the ridiculous degree thst the perellis were. In terms of range, im getting a consistent 300 miles with full charge in average weather.
brycewilliam Nov 2025 Rated 1 out of 5
azampatti Oct 2025 Rated 5 out of 5