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Tyre Pressures

ORIGINAL: rav

A trip to Shell last night and £40 worth of V-Power showed little/no movement to the petrol gauge.

Mine was the same Rav when I bought the car last weekend. Rob looked at the sender in the boot and just checked the wires were connected properly (with an official 'wiggle' of them[:D]) It's worked ever since!
 


ORIGINAL: rav

A trip to Shell last night and £40 worth of V-Power showed little/no movement to the petrol gauge.



Or the fact these things have 80 litre tanks! That's a tonne today and probably about £150 this time next year! Worth every penny in my book though!
 
Hi, Rav
You may have misunderstood me. As Rob said, 35 or 36 Rear, and 29 or 29.5 Front is the 'early' book figure and is a decent enough set of numbers. It is the high 'late' book figures you want to be wary of. I was really addressing Hairy with that comment.

In what way does your car feel peculiar?
 

ORIGINAL: Lowtimer

Hi, Rav
You may have misunderstood me. As Rob said, 35 or 36 Rear, and 29 or 29.5 Front is the 'early' book figure and is a decent enough set of numbers. It is the high 'late' book figures you want to be wary of. I was really addressing Hairy with that comment.

In what way does your car feel peculiar?

Lowtimer -> The car really drives and handles differently on these 16" wheels after driving it for a year on 17" wheels.
I would say its more go-cart type handling now - and a much smoother ride with less tram linging and pot hole bounce.

I thought that the tyres were a little too full though as the car was skittish on the road. This maybe due to the decreased footprint of the rear tyres.

I will try again with the pressures that you and the others who kindly responded have sugested. 36 rear 29 front and see how i get on over the weekend.

I will also officially wiggle the sender wires too, although the problem lies more with how much tax the government are charging on fuel at the moment.

 
ORIGINAL: Hairyarse

Hi Rav

I've got D90's on my S2 and I think the same tyre sizes. I've only had it a week or so but pumped them up last night to what it says in the handbook, 36 psi front and 44 psi rear. Seems ok so far

Cheers
Andy

I must have spent half an hour at least with a foot pump putting air in the tyres - they needed plenty. Realised the other night what a nob I'd been - got an official Porsche compressor in the boot!!![:mad:] Not something I'm used to but it wont happen again[;)]
 
Do you know what, I have done exactly the same. Mind you, you know how much you are putting in with a foot pump. And it's good exercise!
Still... [:mad:][;)]
 
I always used to run about 2 psi more in the rear tyres on my S2 when it was a road car and we do the same on the 968. Front pressure will be between 34 and 37 psi depending on which tyres on which car and when. On the 968 I currently set the fronts to 36 and the rears to 38.
 
Same size on my 968 but I think the car is a bit heavier 36 all round is the norm, but I like it just a little softer 34
 
Same tyre sizes here - 34psi hot.

Running grippy track tyres I find anything softer than 32 has too much sidewall roll.
 
General advice: I find that if you look at the sidewall of the tyre and find out the maximum pressure for it, and inflate it to 90% of that figure, it's likely to work well. Try 1 or 2 PSI each side of this if you want to vary it.


Oli.
 
Crumbs - what tyres are they?

Try it. Aim for 54 (purely as an experiment) and see how you get on. The rule works for most instances and I'd be curious whether it works for something with such a high rated pressure.


Oli.
 

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