Another questions

[Anubisxc70]

2004 XC70 D5 awd

My cas has 215 r16 tyres, what is the best preassure. Some say its 38 psi , that sounds to much???

When my car is on a down hil fron facing down if your put on P wile car is running, the car shakes if it is front up there is no vibration????

Many thanks

[4x4]

Originally Posted by Anubisxc70

My cas has 215 r16 tyres, what is the best preassure. Some say its 38 psi , that sounds to much???

Your owners manual should give you the recommended pressures

Originally Posted by Anubisxc70

When my car is on a down hil fron facing down if your put on P wile car is running, the car shakes if it is front up there is no vibration????

Is the parking brake applied when this happens?

[Anubisxc70]

Hello.
No. Without parking brake on.
Thank you

[TiredGeek]

Tyres are anywhere from 33 to 44 all round depending on what you're doing.
33psi for comfort around town, but that hurts mpg a bit,
35-38psi is a good compromise for comfort and helps the economy, but if the car is loaded with 4 people and you're doing 70+ for long periods on the motorway then you want to be up at 44psi. It's all in the handbook....

I tend to run mine around 40 all the time as I have the 4C suspension so I can put it on comfort for round town then sport to firm it up for high speeds

[oragex]

I think all tires all the same. Maybe just the car weight makes a difference. Usually for mid size sedans the recommended tire pressure is around 32psi. I wouldn't go below this value, 34-35 shouldn't hurt (it's all about tire wear). Would only be a matter of comfort.

What's perhaps much more important, is the pressure gauge accuracy: it's varies widely, sometimes by 5psi or more. Better use a quality digital gauge or even better use two different models and compare (portable compressors tend to have accurate gauges - well at least those that aren't the cheapest ones)

[4x4]

Originally Posted by Anubisxc70

Hello.
No. Without parking brake on.
Thank you

That's the problem then, when you select park on a hill it puts a strain on the gearbox and a massive strain on the parking pawl, if enough exertion is applied to the pawl they have been known to break and an expensive repair bill.

The correct procedure for parking on an incline is to bring the vehicle to a halt, with your foot on the foot brake select neutral, apply parking brake, remove your foot from foot brake and allow the parking brake to take the strain and only then select P on the gear lever.

[TiredGeek]

Originally Posted by 4x4

That's the problem then, when you select park on a hill it puts a strain on the gearbox and a massive strain on the parking pawl, if enough exertion is applied to the pawl they have been known to break and an expensive repair bill.

The correct procedure for parking on an incline is to bring the vehicle to a halt, with your foot on the foot brake select neutral, apply parking brake, remove your foot from foot brake and allow the parking brake to take the strain and only then select P on the gear lever.

And it's the same with a manual, otherwise it puts strain on the DMF springs and they fail earlier than normal

[Anubisxc70]

Many thanks.
As always you guys rock