R36 TPMS Full Load / Partial Load Problem?

[XXX-1.8T]

Tires were inflated to 40psi and we pressed the TPMS to activate Full Load 2 secs later it says Tire unflated check tire pressure.

Have i done something wrong?

When i press it again to set Partial load it is fine.

Whats the difference between Full Load and Partial Load TPMS settings?

Whats it for?

[Diesel_vert]

There are two sets of tyre inflation pressures depending on the payload, because the more weight you add to the car, the higher the tyre inflation pressure needs to be. The figures, which are indicated inside the fuel filler flap, represent partial load and full load (diagram should be self explanatory).

Switching between "Partial Load" and "Full Load" on the TPMS means you are just changing the threshold point at which the sensors trigger the warning light, which I believe are based on the figures on the fuel filler flap.

So if the tyres are inflated using the partial load figures, switching to "Full Load" on the TPMS will trigger the alarm, since the partial load figures are less than the full load figures, thus deeming the inflation pressure insufficient.


Can you list the partial and full load pressures for the R36? And does it have any inflation pressures specifically for 235/35 R19 tyres as well? (List these too if present).

[XXX-1.8T]

There are two sets of tyre inflation pressures depending on the payload, because the more weight you add to the car, the higher the tyre inflation pressure needs to be. The figures, which are indicated inside the fuel filler flap, represent partial load and full load (diagram should be self explanatory).

Switching between "Partial Load" and "Full Load" on the TPMS means you are just changing the threshold point at which the sensors trigger the warning light, which I believe are based on the figures on the fuel filler flap.

So if the tyres are inflated using the partial load figures, switching to "Full Load" on the TPMS will trigger the alarm, since the partial load figures are less than the full load figures, thus deeming the inflation pressure insufficient.


Can you list the partial and full load pressures for the R36? And does it have any inflation pressures specifically for 235/35 R19 tyres as well? (List these too if present).

ok it shows Partial Load = 270kpa or 2,7Bar = 39psi
Full Load says = 320kpa or 3,2bar front and 340kpa 3,4Bar = 46psi

so maybe that solves my problem?

Tyres are standard 235/40/18 size.

if its mainly my wife and 2 year old son in the car do i keep settings at partial 39psi?

Sometimes its the 3 of us or 4 of us so do i keep it partial or pump the tyres to 46psi?

[Diesel_vert]

Thanks for providing the figures.

ok it shows Partial Load = 270kpa or 2,7Bar = 39psi
Full Load says = 320kpa or 3,2bar front and 340kpa 3,4Bar = 46psi

so maybe that solves my problem?

Hopefully. Switching to "Full Load" would mean that you would have to inflate the front tyres to 3.2 bar (46 psi) and rear tyres to 3.4 bar (49 psi) for the warning light to turn off.

You should verify this, but don't forget to add a few psi if the car has been driven around (air expands when heated).

if its mainly my wife and 2 year old son in the car do i keep settings at partial 39psi?

For 235/40 R18 tyres, yes.

Sometimes its the 3 of us or 4 of us so do i keep it partial or pump the tyres to 46psi?

If it were me, I wouldn't bother adjusting the pressures.

I only tend to use the full load figures when all five seats are occupied and they've all bought along proper heavy luggage, or if I'm going to raid the local Bunnings store or something.


Dissapointed they didn't list the figures for 235/35 R19, as I was curious to what inflation pressures they recommended.

[XXX-1.8T]

for 19's im going to check the Passat CC tyre placard as VW Australia told me the R36 uses the same load ratings as the CC

[Diesel_vert]

Keep in mind that the maximum weight of the CC V6 is 140 kg less than the R36 sedan and 220 kg less than the R36 wagon, most of which is due to the smaller maximum rear axle load (see here).

[XXX-1.8T]

according to your post are you saying as a minimum 235/35/19 tyres need 42psi?

i am getting some 19's installed on the weekend.

[Diesel_vert]

Yes. A 95 XL tyre when inflated to 2.7 bar has a load capacity of 650 kg.

So my reasoning is that a 91 XL tyre has to be inflated to 2.9 bar or higher at all times, as 615 kg is low enough as it is.