Tyre Pressures

[sharkey]

Before the T I had an AUII XR8 with 17" 9000s. I ran 38/34 and got better than 40,000km out of them. I then switched to 3000As which still looked very good after 18000km when I traded it in for the T. So with the BA being slightly heavier the 40/36 sounds about right.

One thing I have learnt from experience is Do Not Let The Dealer Touch Your Wheels and Tyres! Go to a wheel and tyre specialist for fitting, rotating, balancing or allignment!

During the time I had the XR8 I found my dealer f*&@king hopeless when it came to wheels and tyres some of the problems I experienced (after dealer service) were:

Off centre steering after wheel alignment

Vibration

Tyres rotated from left to right

Weights on both sides of the same wheel

Incorrect (too low) tyre pressures

Even when buying the T, the car I test drove had a vibration and my new T has a vibration at 110.

When I checked the tyre pressures in the T they only had 28 all round when warm.

I have found a local tyre place that does things right and will be taking the T there for a proper balance and alignment asap.

[genebaby]

Yeah, watch it when Ford do your tyres. I re-checked mine after my first service and pressures were down all round, had to put them all back up.

[TurboDewd]

The dealer I picked my car up from said 45psi all round...

Maybe Ill go for 42 all round. Not sure why some want the rear to be lower pressure rather than all 4 the same.

[Trumpy]

Not sure why some want the rear to be lower pressure rather than all 4 the same.

Less weight in the rear???

[Turbo6man]

The dealer I picked my car up from said 45psi all round...

Maybe Ill go for 42 all round. Not sure why some want the rear to be lower pressure rather than all 4 the same.

Firstly, as stated, there is less weight in the rear so the tyres aren't working quite as hard to keep their cool (and therefore wear rate) under cornering loads.

Secondly, because the chassis is set up to understeer, having a higher pressure bias towards the front will help with turn-in response.

Thirdly, as your rear wheels are the driving force, a lower pressure will give slightly more straight-line grip when under full throttle accelleration.

But, as with all things your individual driving style may influence your decision on how you need your car (and tyres) to perform, so play with the pressures to see what suits YOU.