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what PSI do you inflate your tires to
- Thread starter hybrid>EV
- Start date
You're measuring tread depth at the edges using these grooves each side (as opposed to the sipes on the very edges)?
Oh dear... I suggest you check it yourself or maybe post a photo of the full width of one of your tyres so we can see the state of them.
I'm assuming you also haven't compared the car's TPMS numbers against an accurate gauge? You need to do that as well.
I'm assuming you also haven't compared the car's TPMS numbers against an accurate gauge? You need to do that as well.
Ok I checked. Teslas measurements were correct, tires are definitely wearing faster on the outside, all 4 wheels evenly.It's an idea...
Upped the pressure to 45, definitely more firm ride now
let’s see if it makes a difference in 10km, I’ll be doing a lot of driving next few months.
You said "on the edges" not "on the outside". When did you last have an alignment check?Ok I checked. Teslas measurements were correct, tires are definitely wearing faster on the outside, all 4 wheels evenly.
Upped the pressure to 45, definitely more firm ride now
Show us a photo of the tyre treads.
arvindm
Member
There's just no way 42 psi could be considered under-inflated. There's another explanation but without some more info it's impossible to say what.
Poor explanation on my behalf, however I posted the tread depths. the outer tread is wearing faster than the inner. Not the"edges".
No issues with alignment, balance just done and I'm at 45psi now, so will see if it makes a difference. Will try and get a pic later.
I have done 35k on these tires and still at 3.5mm so it isn't bad, hoping to stretch them to 50k.
Sweed269
Member
The stock tire can carry the max gross weight at 35psi, which is where the tire alarm illuminates. Anything over 35 is safe. Up to the max psi of the tire. I tend to hover around 38-39 cold in the morning.
I had a flat tire from a nail and I was close to a Tesla service center by chance so I went there and they got me right in and I ended up buying 2 new tires to keep symmetrical. When I got home and they were cold (50f), I checked and they were inflated to 46psi. Door label says 42psi so I let some out to 42psi. Not sure if 46 was intentional or not.
Sweed269
Member
Midnightsun
Active Member
If this was the case then we would all have center wear which is indicative of an over inflated tire. Car is heavy, needs more pressure, simple physics.
Sweed269
Member
Our local service center always pumps the tires to 46psi when you go in for a service. I feel that they do it to maximize range at the cost of comfort. It's part of their MO. 42 is too high IMO.
Tires will support the max load at 35psi. Simple physics.
arvindm
Member
For Tesla MYLR 38-40 PSI is the sweet spot for efficiency and comfort. 42 feels hard and 38 or lower will trigger low tire pressure alarm. Tire pressure is like the color of your car. Everyone has a different preference. Go with what suits the best for you. Every car manufacturer recommends a slightly higher pressure than required in order to improve the efficiency. I generally keep it 2PSI below the manufacturers recommendation. This has worked good for me with just about every car I have owned in the last 30 years.
Agree with the above post, within reason.
That said, if the main concern is even wear do the chalk test. Put a several inch stripe using chalk across the width of the tire then drive straight for a couple hundred feet. Chalk come off even? You're at the sweet spot. Chalk off in middle but left on the edges? Over inflated. Chalk off on edges but left in the middle? Under inflated.
Just got wife's MY and haven't done yet, but on my truck the sweet spot is 40-41 (hot tires) which translates to 37-38 cold. The tag on the door states 36, so pretty close. When I check wife's I will start at 42 (cold) get the tires good and warm, and start the test from there. I haven't checked the hot pressure yet, based on 42 cold, hot should be 45 or so.
That said, if the main concern is even wear do the chalk test. Put a several inch stripe using chalk across the width of the tire then drive straight for a couple hundred feet. Chalk come off even? You're at the sweet spot. Chalk off in middle but left on the edges? Over inflated. Chalk off on edges but left in the middle? Under inflated.
Just got wife's MY and haven't done yet, but on my truck the sweet spot is 40-41 (hot tires) which translates to 37-38 cold. The tag on the door states 36, so pretty close. When I check wife's I will start at 42 (cold) get the tires good and warm, and start the test from there. I haven't checked the hot pressure yet, based on 42 cold, hot should be 45 or so.
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