The Tesla Thread

theone8181 · 7 Aug 2023 at 20:19

So I checked my front tyres at the weekend and the inner edge is down to 1.7mm and the outer edge is about 3.5mm. I'm getting g new fronts next Monday and the alignment checked on Tuesday, but just wanted to check that's not normal? I got about 18k miles out of the front, some kumho tyres (were brand new when I got it). I'll be going for PS4s for the front as that's what I've got on the back (none acoustic).

theone8181 · 13 Aug 2023 at 11:54

So just had another issue last week. I got caught in a very heavy rainstorm a few weeks ago and on Tuesday I had an error coming up about front right restraint system. Some googling told me about a sensor under the seat (and found a good video). Finally got round to checking today and it's different to the one online (was an American vid). I've raised a service request (as now out of warranty). They've posted '
Diagnosis: Low Voltage Circuit Integrity
Check', however not sure if this is a fix or just a diagnosis (I have messaged but it's sunday). I ask as the estimate is £198 which seems a lot just for a diagnosis.

theone8181 · 14 Aug 2023 at 10:38

Slight update, the error message has gone from on all the time to intermittent so hopefully it is drying out. It's actually more annoying now though as it 'bongs' a dozen times per drive

.

FerretBoy · 14 Aug 2023 at 14:00

Just be wary that your 12v battery is not on the way out. I believe that tyre wear is normal and why the recommended rotation, although I'm no expert.

theone8181 · 14 Aug 2023 at 14:19

That's true, the battery is the original so over 4 years old, although from reading online there should be all sorts of warnings these days.

theone8181 · 25 Sep 2023 at 07:20

Another weird issue I've had. All 4 of my tyres say they are 37 psi. My tyre compressor says they're now 42 (topped them up yesterday thinking they were low). When I used the same compressor on my wife's fiesta, it agreed 100% with her car. I've tried the factory reset option in the service menu (but once once I got to work so not sure what it did).
Are they any reasons why it should underread by so much?

adam cool dude · 25 Sep 2023 at 10:10

theone8181 said:
Another weird issue I've had. All 4 of my tyres say they are 37 psi. My tyre compressor says they're now 42 (topped them up yesterday thinking they were low). When I used the same compressor on my wife's fiesta, it agreed 100% with her car. I've tried the factory reset option in the service menu (but once once I got to work so not sure what it did).
Are they any reasons why it should underread by so much?

Have tried a proper pressure reader on the tyres?

Tyre compressors are hardly the most accurate things.

theone8181 · 25 Sep 2023 at 10:54

I've always found my compressor to be pretty close to what garages (over)fill it to. I don't see why they would be inaccurate. It also doesn't explain why the fiesta was reading the same as the compressor.
I would accept +/- 0.5 bar being the same as a tolerance, but more than that seems excessive.

b0rn2sk8 · 25 Sep 2023 at 10:58

Have you driven it since? The sensors only update when driving.

theone8181 · 25 Sep 2023 at 11:07

b0rn2sk8 said:
Have you driven it since? The sensors only update when driving.

Yes. I topped it up yesterday, then drove to work today. I know it takes about a 1/4 mile before they update (not sure if it's speed related or not). It just strikes me as odd. I've got a second compressor (also ring) so I'll try that and compare.

Jayster · 25 Sep 2023 at 15:08

About the tyre wear, it is normal to a degree. I have always had more front inner tyre wear but it has gotten worse as the front upper control arms wear.

The control arms are a bad design as they allow some water ingress that will wash out the grease. Meyle make an improved HD version which my car will be getting soon as they now squeak sometimes.

{SAS}TB · 25 Sep 2023 at 15:22

I see a bit of variation and also the temperature of the tyres (even when stationary / the outside temp) can have a few degrees of difference

Screenshot-2023-09-25-15-17-01-75-dea0ed4dc7fea9051b966dd91d80d9ae.jpg

It's 19 degrees outside ATM

theone8181 · 26 Sep 2023 at 07:22

Jayster said:
About the tyre wear, it is normal to a degree. I have always had more front inner tyre wear but it has gotten worse as the front upper control arms wear.

The control arms are a bad design as they allow some water ingress that will wash out the grease. Meyle make an improved HD version which my car will be getting soon as they now squeak sometimes.

I actually had mine changed under warranty. I believe the new Tesla version is better sealed, although I have no idea how much they are compared to aftermarket.

For tyre pressures I'll check again at the weekend, as due to ferrying the kids every weekday my tyres don't 'cool off' until quite late. I do see a bit of variation, at cold it measures 37 psi, but when warm there's always a difference. I don't think it's possible to have them the same hot as 1 side of the car will have traveled further, and cornered more etc.

N0ddie · 26 Sep 2023 at 13:24

I had the rear 2 tyres changed at the weekend. Managed just over 31000 miles on them. Fronts aren't low enough yet to change but dude thinks a couple more months will get me there (The lease company won't change them until they get to a certain depth).

Jayster · 26 Sep 2023 at 15:00

theone8181 said:
I actually had mine changed under warranty. I believe the new Tesla version is better sealed, although I have no idea how much they are compared to aftermarket.

For tyre pressures I'll check again at the weekend, as due to ferrying the kids every weekday my tyres don't 'cool off' until quite late. I do see a bit of variation, at cold it measures 37 psi, but when warm there's always a difference. I don't think it's possible to have them the same hot as 1 side of the car will have traveled further, and cornered more etc.

My understanding is they didn't really change the design, they still have the plastic cap over the ball joint they just packed the joints with more grease to be fair it seems to have extended the life of them as my car came with revised ones and is only causing issues now at 70,000+ miles.

37psi cold is probably on the low side, I find 43 a good balance between economy performance and comfort on my Model 3 LR with 18" wheels.

theone8181 · 27 Sep 2023 at 07:28

Jayster said:
My understanding is they didn't really change the design, they still have the plastic cap over the ball joint they just packed the joints with more grease to be fair it seems to have extended the life of them as my car came with revised ones and is only causing issues now at 70,000+ miles.

37psi cold is probably on the low side, I find 43 a good balance between economy performance and comfort on my Model 3 LR with 18" wheels.

Yea but they're actually 42, it's the car underreading them by a large amount.