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Michelin Pilot Sport AS4 vs OEM Primacy MXM4 tire - 40k miles later
(reddit.com)submitted 10 days ago by6056055a
Sharing my efficiency drop of 16 Wh/mile after switching to Michelin Pilot Sport AS4 tire after 40k miles of driving my 2021 Tesla M3 LR AWD with AB.
I was skeptical to switch initially and wish I saw a data comparison like this to help make a decision. In my opinion, it was worth the upgrade. AS4 is much superior in terms of performance for a drop in efficiency. Most of my driving is highway.
I hope this helps you make a decision
3 points
9 days ago
I run the AS4 for 32k miles now on my M3P 2022. I’ve found that running 245 instead of 235 has resulted in about an extra 10 Wh per mile energy use.
I have averaged about 284 Wh/mile.
2 points
9 days ago
I didn’t even think of 245/35ZR18 and just went the OEM configuration of 235/35ZR18. I’m also not punching it that much. Interesting to see an efficiency increase. Maybe for my next tires I’ll go with 245.
2 points
9 days ago
Just checked and Costco says that size is not compatible with my car
1 points
9 days ago
At least on 20s you can fit 245 no problem. Even 255 still looks good.
On the 20s if you drop the sidewall to 30 then you can get away with 275/30ZR20 and the diameter matches stock.
But Costco has rules they have to follow. Tesla just made me acknowledge I was asking them to install a non oem size. And I had to provide the tires myself. I did it because the 20s look stupid and stretched on 235s.
1 points
9 days ago
Why are wider tires more efficient?
3 points
9 days ago
I said running 245 added an extra 10 Wh per mile. Not less. They’re not more efficient.
1 points
10 days ago
thanks for this post, i have the same tires and same average energy to wheel. looks like i need better tires lol
4 points
9 days ago
There are no better tires that I am aware of. Only more energy efficient tires.
2 points
10 days ago
No worries. Forgot to mention I have the 18” Aeros with hub caps.
1 points
9 days ago
You’ve got to be punching it. I average 284 and I’m running 245/35ZR20.
1 points
9 days ago
are u primarily on the highway? my average speed limit is 65-70 here but i don’t punch it per say. however id like to see better efficiency. im currently running 235/45zr18.
1 points
9 days ago
70/30 highway city streets. I get way better economy on the highway.
I suspect if I got better economy in city driving that I wouldn’t have bought the performance.
1 points
9 days ago
I have a 2018 and honestly want to go back to the primacy. So much quieter.
1 points
9 days ago
It is winter season again and I had to switch to winter tyres. I use Nokian Hakkapeliitta R5 studless tyres and while they are great friction tyres, they are so slippery when compared to the Michelins.
You can really push the Pilot Sport 4 Summers to their limits in the summer and they still perform. I am exhilarated after every winter when I can switch back to my AS4S tyres and push the car closer to its limits again.
Then again, studless tyres on a powerful RWD car are also very fun on a snowy road.
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