Michelin e.Primacy All Season tires




So, I've ordered Michelin e.Primacy all-season tires. They actually came in a few minutes ago. I think I'll have them put on this Friday. From what I've read regarding lower rolling resistance (a good 10% lower than the ProContact RX), and longer durability with the legendary Michelin traction characteristics, I'm hoping it'll be a good tire! I'll let you know how they go. If anyone already has them, please feel free to chime in!




1. They're *super* quiet. The way they've done the tread blocks and the compound, along with whatever layering magic they've used, is exceptional. I don't think they have acoustic foam in them, which makes it even more impressive.
2. Bumps are soaked up so much better than the ProContact RXs. This may be in part because the tires are so new. However, I always felt the bumps to be harsh even when the ProContact RXs were new. The ride comfort is thus significantly better.
3. Rolling resistance is at another level. Generally when you get new tires, the increased tread depth means an immediate decrease in efficiency. Not with these. Perhaps the most striking example of this is when coasting down a hill, the acceleration due to gravity is much more pronounced than with the ProContact RXs. I haven't done my standard test loop yet, but from what I have tested so far, the efficiency is going to be stellar. I'm very, very pleased with the results so far in this department.
4. Road feel is precise, not overly harsh. New tire, so it was a smidge squirmy at first, but has settled in nicely. The ProContact RXs were down to 4mm, so they felt a bit fidgety and darting. The e.Primacys are excellent for cruising, but feel very agile going around corners and making directional changes.
5. Wet weather/hydroplaning resistance is excellent. A thunderstorm hit as soon as these were put on, and I was able to go over standing water without any issue. The ProContact RXs were okay at this in the past, though as they got lower, it started to get a bit squirrely. It's the main reason I replaced the tires now.
This is just the first few minutes driving on these. In all, I can say that I highly recommend the new e.Primacy tires!




Efficiency: With the older tires, on my loop to work, most of my "good efficiency" loops averaged about 279-289 Wh/mi, but would often be in the high 290s to low 300s, depending on many factors. The best efficiency in this test loop I'd ever seen with the ProContact RXs was 269 Wh/mi, but that was a pretty exceptional day. So, let's use mid 280s as the comparison. Today, on my standard "go to the lab or office" loop, without breaking a sweat, the e.Primacys managed 256 Wh/mi! It was an average drive in average conditions around this time of year, so we're talking about easily 30-40 Wh/mi difference, which is considerable. It's even more impressive if you think about the fact that the tires are brand new, where you'd usually expect a reduced efficiency due to higher tread. This efficiency will only improve!
Ride quality is sublime. The ProContact RXs had a sweet spot: new asphalt. You could easily tell when you were on newer asphalt, because the ride became whisper quiet. However, older, rougher surfaces were noticeably louder. Today, driving back from campus with the e.Primacys (primacies? lol), they were so quiet I thought I was already on the new asphalt section. That's what an amazing job the compound and tread blocks are doing. It's kinda difficult to wrap one's head around. Sure, you definitely hear a bit of tire noise, but it's night and day from the ProContact RX, which was honestly quite decent with noise!
As metioned before, the e.Primacy is excellent on bumps. It's so much more comfortable. I'm sure some of that has to do with the greater tread depth, but I always remembered the older tires to be harsh for what I expected. So, in summary after a couple of days, if you have an EQE and have the right wheel size, the Michelin e.Primacy is a no-brainer. Excellent efficiency, fantastic ride comfort, and great grip, so far. There may be grippier tires, but for standard use case, I can hardly think of a better tire choice. I'm so glad I just went for it.




I'm sure you'll get at least 20k from the Procontact RX - I probably could have made it another 2-3k miles. But the aquaplaning issues at that tread depth moved me to get the e.Primacy set.




Efficiency: With the older tires, on my loop to work, most of my "good efficiency" loops averaged about 279-289 Wh/mi, but would often be in the high 290s to low 300s, depending on many factors. The best efficiency in this test loop I'd ever seen with the ProContact RXs was 269 Wh/mi, but that was a pretty exceptional day. So, let's use mid 280s as the comparison. Today, on my standard "go to the lab or office" loop, without breaking a sweat, the e.Primacys managed 256 Wh/mi! It was an average drive in average conditions around this time of year, so we're talking about easily 30-40 Wh/mi difference, which is considerable. It's even more impressive if you think about the fact that the tires are brand new, where you'd usually expect a reduced efficiency due to higher tread. This efficiency will only improve!
Ride quality is sublime. The ProContact RXs had a sweet spot: new asphalt. You could easily tell when you were on newer asphalt, because the ride became whisper quiet. However, older, rougher surfaces were noticeably louder. Today, driving back from campus with the e.Primacys (primacies? lol), they were so quiet I thought I was already on the new asphalt section. That's what an amazing job the compound and tread blocks are doing. It's kinda difficult to wrap one's head around. Sure, you definitely hear a bit of tire noise, but it's night and day from the ProContact RX, which was honestly quite decent with noise!
As metioned before, the e.Primacy is excellent on bumps. It's so much more comfortable. I'm sure some of that has to do with the greater tread depth, but I always remembered the older tires to be harsh for what I expected. So, in summary after a couple of days, if you have an EQE and have the right wheel size, the Michelin e.Primacy is a no-brainer. Excellent efficiency, fantastic ride comfort, and great grip, so far. There may be grippier tires, but for standard use case, I can hardly think of a better tire choice. I'm so glad I just went for it.
Last edited by HBerman; May 3, 2025 at 11:57 AM.
Trending Topics




Last edited by bytemaster0; May 5, 2025 at 12:38 AM.
The Best of Mercedes & AMG




Context:
- I have 2 dedicated wheel sets (summer/winter). My first set of factory tires was Michelin Sport EV, and it looks like it will barely make 20-25k miles (judging by the 20K warranty on this, maybe it's to be expected).
- I am probably looking to have one set of All-Season tires, and one set of winter ones.
- The A/S options that I'm seeing available at my size (265/35R21 front 295/30R21) are the Continental ProContact RX, and the Goodyear Eagle Sport A/S (the Tesla OEM tire).
Any thoughts?




My inclination is to use the Conti CrossContact RX for summer (Apr/Nov), and try out the VikingContact 7's for the heart of the winter (Dec/Mar).
Seems to me that the default options for the 21inch are simply wearing out way too rapidly for the sake of being soft enough to have a "Y" speed rating (which is more than I practically will ever need). But I need good traction in the winter, and decent tread life anytime else.



My question to you - do you think I would notice a significant improvement going to Michelin Primacy tires over the Pirelli Scorpion AS?




My question to you - do you think I would notice a significant improvement going to Michelin Primacy tires over the Pirelli Scorpion AS?







Sedan, I run the e.Primacy year-round. I will likely stay with that tire unless something really improved comes along.
Last edited by bytemaster0; Jan 11, 2026 at 01:53 PM.




Reasons why I love this tire more and more: Lowest rolling resistance on the charts so far - it's a class leader. Quietest tire I've ever driven. Comfortable over bumps, not harsh. Quiet on all pavements, it's uncanny how it does this. Decent turn-in, very predictable handling. "Michelin" feeling of the tire. Excellent grip in the wet, even in light snow. It's the best touring tire I've driven.
TireRack has an excellent review on it, and compares it to UHP tires as well. You can see it here:
Hope that helps!
I'm looking for summer tires, not AS, as I have a separate set of winter (nokian hakkapeliitta) tires that I think are great - and they have a lot of miles left in them.
"A" ratings for efficiency and grip. 70db rating for noise, which I think is the lowest I've seen here.
https://kennethsdack.se/produkter/da...mxU7okSZzN5jeg..





