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235-35-19 to 225-40-19

Discussion in 'A4/S4 forum(B5 Chassis)' started by g60leigh, Aug 5, 2008.

  1. g60leigh
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    g60leigh Well-Known Member

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    [Aug 5, 2008]
    I have been trrying to get some replacement tyres in 235-35-19 but they are like hen's teeth to get at a decent price, guy at the tyre place said try 225's as they will fit no problem and are cheaper, I have sourced a set of 225-40's at a nice price but am wondering if anyone can think of a reason there will be a problem? cheers
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  3. stapo69
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    stapo69 All hail the mighty quattro!

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    [Aug 5, 2008]
    If your 19s are like mine, fitting them in the arches is a bit tight. With a 225/40 you will be losing a little in the width, but gaining in height cos of the bigger profile. Why not a 225/35? A little bit skinnier, but the same profile, also seem a bit more of a common size, in case you pop one and need to replace.

    Have a look on here, dozens of tyres at pretty good prices: http://www.mytyres.co.uk/start.html

    Can get a decent deal from the shops on ebay too.
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  4. g60leigh
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    g60leigh Well-Known Member

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    [Aug 5, 2008]
    I have a set of MICHELIN PILOT SPORT 2 225/40's for £120 so going to give them a go
    wonder if the stretch will ofset the height?
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  5. jcb
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    jcb Active Member VCDS Map User

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    [Aug 5, 2008]
    why would you lose width? they are both 225mm wide.
    the 35 and 40 profile is not a measurement its a percentage of the width.
    35% of 235 = 82.25mm wall height
    40% of 225 = 94 mm wall height

    that is close to 12mm top and bottom on the wheel height, do you have 12mm's worth of space between the current tyre and bearing carrier upright? I know I don't.
    probably explains why they are less common or not popular.
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  6. jcb
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    jcb Active Member VCDS Map User

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    [Aug 5, 2008]
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  7. Oranoco
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    Oranoco Well-Known Member

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    [Aug 5, 2008]
    Just done a quick search and am now glad I opted for 18's. £172 a piece for Toyos :ohmy:
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  8. AndyMac
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    AndyMac Moderator Staff Member Moderator

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    [Aug 5, 2008]
    Yes your gearing will be well screwed deviating from the stock rolling radius by that much. That's 5% and the maximum recommended is 2.5. Even your old tyres were only just inside the 2.5%.
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  9. jcb
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    jcb Active Member VCDS Map User

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    [Aug 5, 2008]
    slows you down too!
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