So, my 2019 Octavia got the winter season makeover. A set of new steel wheels (original Škoda 16”) and 4 new BFGoodrich 205/55 R16 winter tyres. The same size as the factory fitted alloy wheels and Michelin summer tyres. Couple of kilometers after leaving the shop, the TPMS warning lit up, complaining about the pressure in rear right tyre. It this normal/expected?

 

I wasn’t able to check the actual pressure, but visually all tyres looked OK.  Will do the check in the morning. 

check the pressures are correct and then reset the system, I wouldn't worry about it for now

Edited 1 November, 20196 yr by SuperbTWM

This is expected.

 

System needs to re-learn resonance print of each new wheel. Correct pressures and click the SET button to let it start learning.

 

Just remember to set the pressures with the ignition on, but the engine off, then switch off and re start, otherwise the system doesn’t remember properly.

25 minutes ago, Nickj633 said:

Just remember to set the pressures with the ignition on, but the engine off, then switch off and re start, otherwise the system doesn’t remember properly.

This is not correct. Doesn’t matter if ignition or engine is on as long as the ABS unit has power. 

So, the right rear tyre was indeed slightly under inflated. The system identified it correctly. I followed the recommendation table inside the fuel cover and had them inflated all at 2,2 bar, but to my eye this looks too low. At the garage they had them at 2,4-ish with the rear-right at 2,2. Any thoughts?

8 hours ago, damjanev said:

So, the right rear tyre was indeed slightly under inflated. The system identified it correctly. I followed the recommendation table inside the fuel cover and had them inflated all at 2,2 bar, but to my eye this looks too low. At the garage they had them at 2,4-ish with the rear-right at 2,2. Any thoughts?

 

I don't know how low temperatures you get during winter but if you're using normal air and not nitrogen then add 10-20% in your tires. When I had an Octavia I personally had it around 2.8 bar on all four corners.

Edited 3 November, 20196 yr by BGB
Typo

I'd experiment within the recommended pressures on the fuel cap. I think 2.2bar is for an unloaded car. You can inflate higher than that. I have my rear tyres slightly higher pressure than the fronts, even when unloaded. It just feels better. Keep an eye on tread depths, you need to have even wear across the tread.

And as per the above message,  ambient temperature affects tyre pressures. So set them when  at the usual temperstures for the time of year.  Not so easy in the UK as our maritime climate is so variable. 

Edited 3 November, 20196 yr by gregoir
Temperatures

Winter tyres need to have a higher pressure, 0.2 bar I think so you should go with with 2.4 bar 

55 minutes ago, Gumby said:

Winter tyres need to have a higher pressure, 0.2 bar I think so you should go with with 2.4 bar 

Did some research in the meantime and found the same recommendation, so i decided to go with the “eco” configuration on the fuel cover. 2,5 front and back.

Is it not more likely wet roads in the south just now more than cold roads?

 

The only way ECO tyre pressures could acheive lower fuel consumption is the higher pressure changing the tyre profile so the tread on the road.

eg, less friction, which is less traction / grip.

 

Sort of makes fitting winter tyres and then increasing the pressures to lessen road holding a bit odd.

 

Check tyre pressures as weather changes and ambient and ground temps change as the UK winter from now to March or next summer can change day by day.

Check with cold tyres and checking in a garage / building is not going to give the same result if warmer in there.

 

http://nokiantyres.com/innovation/facts-about-tyres/tyre-inflation-pressures

 

http://tyremen.co.uk/winter-driving/tips

 

EDIT.

I see the location know. Macedonia, not Milton Keynes . Doh. My bad.

 

 

Edited 3 November, 20196 yr by Roottootemoot

I fitted my winters over the weekend but I only have them filled with 78% Nitrogen.

 

How do they fill tyres with 100% Nitrogen?

 

Thanks AG Falco

"They" hand over money and "they" fill them with 100% Nitrogen. Simples.😕

How do they suck all of the air out of the tyre first and then fill it with just nitrogen. 🤔

Surely the tyre would have to get sucked flat for this to happen.

Then it would pop of the wheel rim. 

 

Or is it just not possible. 😉

 

Thanks AG Falco

 

I was being sarcastic about this divisive topic. It's  been debated before on this forum. I made the point you raised.

On 01/11/2019 at 21:58, nidza said:

 

 

System needs to re-learn resonance print of each new wheel. Correct pressures and click the SET button to let it start learning.

 

Despite knowing that I should press the reset button,  I've twice forgotten to do it this week.😩

...Reminds me of someone I knew, who's hubby had new tyres etc and the so called dealer "Forgot" to re-fit the monitors. I think they had intentions of keeping hold of them for some reason. The fitter had to remove, replace and refit the tyres a second time, stupid twonk!

1 hour ago, mrgf said:

The fitter had to remove, replace and refit the tyres a second time, stupid twonk

Indeed stupid. One doesn’t need to remove the tyre to fit sensors.  

22 minutes ago, BGB said:

Indeed stupid. One doesn’t need to remove the tyre to fit sensors.  

On a direct system where there are sensors at the base of the valve stems you DO need to at least partially remove the tyres to fit the sensors.

 

On an indirect system (like on the Octavia III) you're correct as there are no sensors then there's no need to remove the tyres.

 

But mrgf didn't say the person he knew drove an Octavia III 🧐

1 hour ago, PetrolDave said:

On a direct system where there are sensors at the base of the valve stems you DO need to at least partially remove the tyres to fit the sensors.

I actually did it twice today on two e-trons. Let the air out and just press the tyre down by the valve - easy peasy!

On 02/11/2019 at 22:40, BGB said:

This is not correct. Doesn’t matter if ignition or engine is on as long as the ABS unit has power. 

I understand what you are saying, and the manual says the same, however unless I turn the ignition off then back on again, it doesn’t learn, and I get a new warning a short time later, by switching off the system learns and gives no false warnings.