The Tyre Thread

[sammykkwok]

I have the 18 inch factory wheel from Holden, and running at 39psi on all wheels. I can't tell if this is high or not , but this is what opel recommend anyway.

I think if you follow whats in the manual, you are on the save side.

Sammy

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[Mr T]

Might be a tad high for XXX/50, but I run 40PSI on 215/40's.

If it is high it wouldn't be by much, if you dont like the ride try 35, but I wouldn't go much less than that.

[sri03]

Thx for the replies. Will monitor the wear on 38 for a while..

[stevedee3]

I run mine at 40 psi all round.

[sri03]

What size are they Stevedee ?

[blackSRi]

Just read this:

"Do you realize that if your car's tires are only 5 pounds (PSI) low, that your gas mileage drops by around 10%? For an average car, that's about $90 per year!
In addition, did you know that the same slightly low tire will wear out sooner? "

[Degen-Astra]

36 all around for me...running 205/50/16. 38 was just that little to jarring of a ride.

[stevedee3]

What size are they Stevedee ?

215/50R17 (plus I'll type some more stuff to make my message at least 10 characters)

[zoidberg]

The recommended Tyre pressure is different for all models, 5 door hatch, 3 door hatch 4 sedan and then depends on what factory wheels you have.

TCCA told me to run 38psi in the front and 36 to 37 in the rear becuase the car is front wheel drive plus the astra's are far from a 50/50 weight distribution.