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Thread: Tyre pressure advice please

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    Regular Member Dave1.8's Avatar
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    Default Tyre pressure advice please

    I have just put my 18" wheels on my Vec. The tyre size is 225/40/18. What tyre pressure do you think I should put in? Thanks for any advice

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    Regular Member Gsi3.2's Avatar
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    i run mine at 40 all round...conti sport contact2's...wearing very evenly thankyou..

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    Regular Member Dave1.8's Avatar
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    Has anyone else got the same size tyres?

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    North West & North Wales Assistant Regional Organiser Drinky's Avatar
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    Yep i used to run these tyres at 40 PSi all round on both the 3.2 and the 2.2 DTi

    Back in a V6 !!!!!!!!!!!! And lovin it !!!

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    Full Member Big Sig's Avatar
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    As a general rule of thumb, twice the rim diameter. So 18x2=36. So 36-40 is ok imo
    Now I need a turbo to keep up!

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    Regular Member Small Racer's Avatar
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    This signum is new to me and I want to get the best I can out of it - just like my vectras -----My manual states 32/32 for my 215/50/17 and on the kk site it states31/29. If I double the rim should I there for be doing 34/34??
    I almost never have anything in the back - and only put 3/4 of a tank in at a time (why carry petrol for the man?) Anyone any advice?

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    Regular Member jack's Avatar
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    on this subject i was out today hit a small like creature and it puntured my 225/40/18 mich' tyre bit of a tw*t but and the are putting in hydrogen in the tyres instead of conventional air they say it increases handling and ride comfort...... does it any1 else know of this?

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    Regular Member gtr1000's Avatar
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    Quote Originally Posted by jack View Post
    on this subject i was out today hit a small like creature and it puntured my 225/40/18 mich' tyre bit of a tw*t but and the are putting in hydrogen in the tyres instead of conventional air they say it increases handling and ride comfort...... does it any1 else know of this?
    Are you sure it was hydrogen and not Nitrogen. IIRC, hydrogen is expolsive

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    Regular Member jack's Avatar
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    nitrogen i knew it was something like that i think i was being b*ll**d by the missus for spending 132.50 on a new tyre hehehe

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    Regular Member jack's Avatar
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    either way does it work?? what happens say if i was at a petrol station and needed to but some in would i have to empty the tyre first of it then fill it or change the rest of the tyres for it to work it seems daft to me but i understand why its used

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