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Thread: Eco tyre pressures

  1. #1
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    Default Eco tyre pressures

    THe handbook has 3 different tyre presures for my car (08, 1.9cdti, 150) 33/33, 38/38 (eco), and 35F/43R (loaded). There is a big difference in pressures between normal and eco. I am more interested in 'grip and safety' than 'economy' but wonder if there is any grip advantage in higher than 33 pressures. Is there any real difference betweeen driving on 33's and 38's for grip? Any comments/opinions welcome. This may have been discused before, but I couldn't find it.
    thanks

  2. #2
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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

    Year : 2013

    Default

    Higher tyre pressures will among other things cause more wear in the centre of the tyre.

    Also, you'll lose some of the bounce properties, resulting in a harder ride.

    I would also think some of the grip would be gone as you would be running on harder tyres than at the normal pressures.

    edit - first hit on google - http://www.ashtontyrespecialists.com...d-uk-tyre-law/

    Tyre pressures
    Correct tyre pressures are vital for safe handling and optimum braking, grip and tyre life.
    Low tyre pressures or overloading will cause increased fuel consumption, more air pollution, shorter tyre life and greater risk of tyre failure.
    High tyre pressures may cause reduced comfort, less grip, greater risk of impact tyre damage and reduced stability in braking and cornering.

    http://www.driving-test-success.com/car-maintenance.htm
    High tyre pressure will cause diminished grip, reduce stability in braking and cornering and increase the risk of impact tyre damage.
    Last edited by Big Dave; 29th February 2012 at 14:36.

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