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Thread: tyre pressure on stretch

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    I have 195/45's on 8's

    On a standard tyre setup with a low tyre pressure the outer edges of the tyre would have greater wear than the centre

    With a high tyre pressure you would have greater wear in the centre and less on the outer edges

    Optimum tyre pressure at 32PSI has optimum even wear across the board


    With a stretched tyre, at 32PSI, I would assume that because of the sidewalls angleing in it would induce a 'dip' in the centre of the contact surface similar to a low tyre pressure. I have increased my tyre pressure to 40PSI to combat this effect and to gain an optimum tyre wear.
    Any comments?

    i also figure that being able to use such an even higher PSI for a 'drift setup' pressure whilst also giving an extra hard tyre.
    Apart from the dangers of beads breaking etc, it sounds ideal.
    Any comments?

    thanks for your input chumps

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    yeah i run 195/60 on 8's front and 8.5's rear. 40psi rear and 36 psi front

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    i was running 20psi on 8s (195/50r15) i got to start running more pressure. awsome grip! tyres last ages.

    i am going to start running 25 psi



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    ^^do u mean the tyres last longer on lower pressure? i though it was the higher the pressure the longer it lasts?

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    I use 34-36psi in my 215/45 on 17x9's and get fairly even wear considering neg and good ride with sharp response.


    <div class='quotetop'>QUOTE (steroidchickens @ Feb 21 2008, 04:57 PM) <{POST_SNAPBACK}></div>
    i was running 20psi on 8s (195/50r15) i got to start running more pressure. awsome grip! tyres last ages.

    i am going to start running 25 psi[/b]
    What pressure were you running when your tyre came off the bead on the Equips? If it was only 20psi then starts to make sense, I know when drifting the tyres will heat up and pressure will increase... or did you clip a kerb drifting to push it off the bead?

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    20psi?????

    Use no less than 30, harder if you need.
    RT142 Estate.

    AJPS.

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    <div class='quotetop'>QUOTE (KonaKid @ Feb 21 2008, 06:02 PM) <{POST_SNAPBACK}></div>
    20psi?????

    Use no less than 30, harder if you need.[/b]
    agreed...i had 20psi in my back to tyres (slow leak in both) pretty sure i could feel the rubber being dragged along....

    back up to 34 or so, and my car feels 10x faster!! (and bumpier mind you)
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    20psi on track only. once they heat up the pressure rises.
    with 160rwkw on 20psi a new pair of tyres has been lasting me a whole day.
    where as on 35 psi i have had a new pair of tyres last me 2 sessions.




    more pressure-more smoke-less grip-less life.
    less pressure-less smoke-more grip-more life.

    to an extent 20psi is a bit excessive. but it worked well.




    nah dude when i had the 195s on the rear i was not running 20psi. worked out why tyre popped off bead.
    it was to do with the modified valve.
    i would not recomend running 195/50r15 streched over a 9" rim on 20psi

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    Maybe try a 205/50 with 28psi or so for more grip? Just a suggestion.
    RT142 Estate.

    AJPS.

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    <div class='quotetop'>QUOTE (KonaKid @ Feb 21 2008, 10:27 PM) <{POST_SNAPBACK}></div>
    Maybe try a 205/50 with 28psi or so for more grip? Just a suggestion.[/b]
    i have been using 15x9 with 205/50r15 tyre with about 23psi cold. awsome grip.
    been keeping up with those 250rwkw nissans no worries haha.

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