tyre pressure 19 snowflakes

[exvectra]

can any one help me what is the correct tyre pressure for a 1.9 signum with 19 snowflakes front and rear

[blues n twos]

can any one help me what is the correct tyre pressure for a 1.9 signum with 19 snowflakes front and rear

As a rule guide just double the rim size.... 38psi or there abouts

[Keithy]

i run my vxr reps at 38psi

[Leemarksmith]

I do 40 front, 38 rears...

Been done to death but everyone says 38, owners book says 40 IIRC...

[soulman]

i do 40...40...

double the wheel size +2

[Keif]

As a rule guide just double the rim size.... 38psi or there abouts

That rule is rubbish.

Why would you change the PSI of the tyre for different rim size. For a 16" Rim it's recommended by Vauxhall to have the front and rear tyres at 35PSI (Not 32 as that rule would calculate too).

The weight of the car is the same what ever rims you have on. The PSI in your tyres is "calculated" on the cars weight.

For my engine in the Signum the correct PSi for the tyres is
16" = 35/35
17" = 35/35
17" = 35/35 (different tyre size)
18" = 35/35
19" = ??/??

Every other engine size has a pressure through the tyre size range that's exactly the same.

[exvectra]

cheers guys i think i will try 38 front and rear

[lofty]

I do 40 front, 38 rears...

Been done to death but everyone says 38, owners book says 40 IIRC...

[sol]

Checked, and the hanbook says 38 Front and 33 Rear unladen

[Big Sig]

That rule is rubbish

That's why it's only a guide!