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Who has lost regen with winter tires?
- Thread starter Darthbenji
- Start date
Just about to leave. Tires pressure is 38 cold so I’ll bump that up to 42 so the car will arrive with the sensors and tires all as they should be. Car has been charging for an hour. When I get in I’ll advise on alerts or dots.
WRG4 tires are NOT "technically classified as all-season tires" - they are technically classified as all-weather tires. All-seasons are not legal for winter driving in Quebec, yet all-weather tires like WRG4 are legal winter tires there and all parts of Canada; the tires are overtly stamped with the required winter tire designation symbol (the snowflake mountain), and I have driven to Mont Tremblant in winter on WRG3 tires (the previous generation) on another car in the past quite credibly. Sure, there are other pure winter tires out there too, but they would not be so great in the other seasons.
You clearly didn't read my posts (#5 with further clarification in #17) on the first page of this thread...
Are these two posts before the Winter Tire switch or after? I’m assuming before.
Good luck.
Glad it helped. Just back from a 35min-each-way drive and there's no doubt my regen braking is seriously different from pre-winter-tires (yesterday). Lots of braking needed and slightly dangerous a couple of times. I'll get used to it but it would be good to know if this is normal on different tires? TPMS is the same Tesla ones that were on the other wheels - all that changed is the tires.
Could this be why the latest firmware version (which I don't have) introduced changes to regen braking?
RWD. Tesla oem rims and sensors. Continental SIs.
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pcons
M3 AWD+
In the next couple weeks I'll be putting my winters on. Already have them (continental si) on the aero rims with OEM tpms. Right now I have OEM all seasons on after market rims the same weight as aero rims and eBay TPMS. Regen is 'normal' for me now....will be interesting to see if it changes when I mount the new tires. Btw I have AWD. I will mount them myself as they are already on the rims.
Lon12
Member
Not sure if I missed this but has anyone with this issue tried lifting off the accelerator slowly from speed and watching to see at what point (deceleration level) the regen reduces? I can understand if goes to full regen rapidly it might confuse the soft compound slip as a loss of traction.
If RWD only, it seems like traction control could be sensing a slip difference between front and rear, maybe just due to the softer compound. That could result in a short pulse of normal regen braking and then reduced regen as it tries to match the slip of the front tires. Brakes would still work fine with even braking on all wheels. Tesla would have to allow a little more slip during regen-only braking.
I admit it doesn’t look good for RWD.
Try bringing your tire pressure up to exactly what it was. I recall you said 42 psi.
I noticed that the TPMS is VERY sensitive to getting an error at 39 psi. I wanted to try lowering my tires from spec of 42 to 36 psi to compare ride, noise and mpge.
As soon as I did the TPMS alarms went off. Then I brought it up to 39 psi. And still had alarms go off. Then I put it back to 42 psi and it was fine.
My friends August built RWD door sticker says 45 psi. Mine says 42 psi. Not sure if that’s a running change for all 18” or a difference between AWD and RWD.
In either case try bringing your pressure up.
It’s hard to believe in a simple regen deceleration that there is that much difference to shut it to down regen. And subtle enough that AWD vs RWD makes a difference.
So just being down at 39 psi might cause an issue.
Once again it’s the posters issue he only swapped tires and regen is gone at higher speeds. My car had no problems regen even when psi was low or high before this issue. Stop blaming people you add nothing to this thread except redirect. Numerous people have confirmed the issue on RWD
FYI I’m running 42 PSI out of the tire shop yesterday and same today once driving. I’m RWD too.
If this is the first real winter for Model 3s it won’t be a surprise if there are issues like this. Hopefully they’re sortable. When anyone asks me how my car is I always say “amazing, but I’m waiting to see how it handles our winter”. Every car I’ve had has at some point had at least minor issues when we really get into the deep cold weather. I just hope they did a whole bunch of winter testing that wasn’t just California winter!
I think I’ll probably submit a support ticket for my issue. Until they start hearing about it they won’t be in a position to do anything. I suggest others report it too.
If this is the first real winter for Model 3s it won’t be a surprise if there are issues like this. Hopefully they’re sortable. When anyone asks me how my car is I always say “amazing, but I’m waiting to see how it handles our winter”. Every car I’ve had has at some point had at least minor issues when we really get into the deep cold weather. I just hope they did a whole bunch of winter testing that wasn’t just California winter!
I think I’ll probably submit a support ticket for my issue. Until they start hearing about it they won’t be in a position to do anything. I suggest others report it too.
Thought I’d give an update. I noticed today I’m getting a little more regen than before not as good as oem tires but better than before. Still on 39.7 version. It was a little colder today. I’m thinking they will get better as it gets colder and the compound is not as soft. So must be something to do with the compound causing some slippage tricking the car not to regen.
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