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Thread: 235 or 245/35/19 tyres on 8.5 wheel?

  1. #1
    adcooper's Avatar
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    Thumbs up 235 or 245/35/19 tyres on 8.5 wheel?

    Hi all

    Yes another tyre / wheel thread, I have searched and read through most on hear but still have a question regarding tyre size.

    I'm looking at some reps 19", ET45 8.5j which I believe I can fit with my standard sline suspension with 235/35/19's without rubbing and maybe with 245/35/19's with some spacers. "Correct me if I'm wrong"?

    I would prefer to run without spacers.

    My main issue is with the 8.5j and it causing a stretched look with the 235s can anyone post some pics of there 235/35/19's on an 8.5 wheel as I'm not a fan of that look?

    Many Thanks Adam
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    Not the greatest of pics but I have 235/35/19 8.5j on mine with H&R springs, 15mm spacers on the front and 10mm on the rear and no scrubbing. Had 225s before but I hate the look of stretch tyres so 235 is the max I could prob run without scrubbing, with standard suspension I would think you could use a 245.



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    this is mine i run 235/35/19 with no rubbing. This was took just after they where fitted and the suspension was not settled. I'm ruuning 9.5" at the front and 10.5" rears

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    IMG_0215.jpgIMG_0205.jpg

    pictures not great,but here is a couple of shots of mine.235 35 19 8.5 rim,the off set is 32 though.
    Attached Images Attached Images
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    Thanks guys that's great what tyres are you running as the stretch looks acceptable?
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    235/35/19 Ultrac Vorti's 8.5j ET48 5mm spacers up front and 15mm spacers at rear.



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    Quote Originally Posted by ajax1976 View Post
    Not the greatest of pics but I have 235/35/19 8.5j on mine with H&R springs, 15mm spacers on the front and 10mm on the rear and no scrubbing. Had 225s before but I hate the look of stretch tyres so 235 is the max I could prob run without scrubbing, with standard suspension I would think you could use a 245.



    Can I ask what drop H&R springs you're running? Did you bother with B5 caps up front to level it? Been saving to pull the trigger on some 35mm drop H&R's to go with some B5 caps up front. It's a daily driver so not slamming it to the deck but want a tighter look.
    Cheers, Leigh.
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    235's best for 8.5, 245 only really works for 9.5 (had both on mine)

    Here's my b6 with 8.5 all round with 235/35/19




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    Quote Originally Posted by yorkster001 View Post
    Can I ask what drop H&R springs you're running? Did you bother with B5 caps up front to level it? Been saving to pull the trigger on some 35mm drop H&R's to go with some B5 caps up front. It's a daily driver so not slamming it to the deck but want a tighter look.
    Cheers, Leigh.
    2wd car so 35mm H&R springs, pictures above are without b5 cups and just the springs. I did have B5 cups but removed after one day, couldn't clear centralised speed bumps and scuffed my drive so took them right off again and car settled fairly level without them.

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    Thanks guys that's great 235s it is :-)
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    Quote Originally Posted by yorkster001 View Post
    Can I ask what drop H&R springs you're running? Did you bother with B5 caps up front to level it? Been saving to pull the trigger on some 35mm drop H&R's to go with some B5 caps up front. It's a daily driver so not slamming it to the deck but want a tighter look.
    Cheers, Leigh.
    I'm having the same conundrum of what springs to get for my daily driver. Don't want to be having to avoid speed bumps all the time and live in the fear of clipping the cupra splitter on a kerb.

    Any other recommendations other than the H&R 35mm's?

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    Quote Originally Posted by ajax1976 View Post
    2wd car so 35mm H&R springs, pictures above are without b5 cups and just the springs. I did have B5 cups but removed after one day, couldn't clear centralised speed bumps and scuffed my drive so took them right off again and car settled fairly level without them.
    Thanks for the feedback. It's speed bump city around here so the advice on B5 cups is well worth knowing . How do you find the ride? General consensus is it's better than stock S line?

    Cheers, Leigh
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    Quote Originally Posted by DieselJake View Post
    235's best for 8.5, 245 only really works for 9.5 (had both on mine)



    Here's my b6 with 8.5 all round with 235/35/19



    DieselJake, can I ask why 245 only really works for 9.5 please as I'm interested in 245's on an 8.5J for the load factor.

    What problem occurs with 245's on the 8.5J is it technical or appearance. Many thanks.
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    I run 245's on an 8 1/2 inch wide rim and they are flush with the rim so they fit fine.

    Equivalency table
    Rim width Minimum tyre width Ideal tyre width Maximum tyre width
    5,0 Inches 155 mm 165 or 175 mm 185 mm
    5,5 Inches 165 mm 175 or 185 mm 195 mm
    6,0 Inches 175 mm 185 or 195 mm 205 mm
    6,5 Inches 185 mm 195 or 205 mm 215 mm
    7,0 Inches 195 mm 205 or 215 mm 225 mm
    7,5 Inches 205 mm 215 or 225 mm 235 mm
    8,0 Inches 215 mm 225 or 235 mm 245 mm
    8,5 Inches 225 mm 235 or 245 mm 255 mm
    9,0 Inches 235 mm 245 or 255 mm 265 mm
    9,5 Inches 245 mm 255 or 265 mm 275 mm
    10,0 Inches 255 mm 265 or 275 mm 285 mm
    10,5 Inches 265 mm 275 or 285 mm 295 mm
    11,0 Inches 275 mm 285 or 295 mm 305 mm
    11,5 Inches 285 mm 295 or 305 mm 315 mm
    12,0 Inches 295 mm 305 or 315 mm 325 mm
    12,5 Inches 305 mm 315 or 325 mm 335 mm
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    dpaz's Avatar
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    245 on a 9.5 wouldn't mean you had to stretch the tyre as say a 215 on a 9.5. Tyre stretch looks good but makes the rim prone to kerbing as the rim protrudes the tyre wall. Also can make fitting difficult.



    There would be no issue with 245 on a 8.5 other than potential speedometer accuracy problems.
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    Quote Originally Posted by leegsi View Post
    I run 245's on an 8 1/2 inch wide rim and they are flush with the rim so they fit fine.

    Equivalency table
    Rim width Minimum tyre width Ideal tyre width Maximum tyre width
    5,0 Inches 155 mm 165 or 175 mm 185 mm
    5,5 Inches 165 mm 175 or 185 mm 195 mm
    6,0 Inches 175 mm 185 or 195 mm 205 mm
    6,5 Inches 185 mm 195 or 205 mm 215 mm
    7,0 Inches 195 mm 205 or 215 mm 225 mm
    7,5 Inches 205 mm 215 or 225 mm 235 mm
    8,0 Inches 215 mm 225 or 235 mm 245 mm
    8,5 Inches 225 mm 235 or 245 mm 255 mm
    9,0 Inches 235 mm 245 or 255 mm 265 mm
    9,5 Inches 245 mm 255 or 265 mm 275 mm
    10,0 Inches 255 mm 265 or 275 mm 285 mm
    10,5 Inches 265 mm 275 or 285 mm 295 mm
    11,0 Inches 275 mm 285 or 295 mm 305 mm
    11,5 Inches 285 mm 295 or 305 mm 315 mm
    12,0 Inches 295 mm 305 or 315 mm 325 mm
    12,5 Inches 305 mm 315 or 325 mm 335 mm
    Great stuff leegsi and dpaz.

    Thanks vey much
    Last edited by rjm180; 6th November 2013 at 20:00.
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    Quote Originally Posted by rjm180 View Post
    DieselJake, can I ask why 245 only really works for 9.5 please as I'm interested in 245's on an 8.5J for the load factor.

    What problem occurs with 245's on the 8.5J is it technical or appearance. Many thanks.
    Technically they should work but 245 will be on the wide side for an 8.5J alloy.

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    Quote Originally Posted by DieselJake View Post
    Technically they should work but 245 will be on the wide side for an 8.5J alloy.
    Ok DieselJake thanks very much.
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    Quote Originally Posted by DieselJake View Post
    Technically they should work but 245 will be on the wide side for an 8.5J alloy.
    Not true, a 245 and indeed 255 are perfectly normal OEM fitment across many brands of car. 235 is beginning of stretch obviously minimal on an 8.5j wheel, the 85% rule confirms this.

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    Quote Originally Posted by dpaz View Post
    There would be no issue with 245 on a 8.5 other than potential speedometer accuracy problems.
    Bit of an urban myth this one, stretching or the indeed the opposite has little or no bearing on speedo accuracy. The steel bands in the make up of the tyre that run round the circumference cannot be stretched or shortened so stretching etc cannot affect the actual rolling circumference.

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    I disagree. Compare for yourself using the calculator below with a 235 and 245 tyre. The diameter or rolling circumference of the 245 is roughly 1% different. Not a huge change but still.

    Tyre Size Calculator - Legal Requirements - Etyres
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  24. #23
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    ^^^ As dpaz said, could be around 5% depending on width too.

    Quote Originally Posted by ajax1976 View Post
    Not true, a 245 and indeed 255 are perfectly normal OEM fitment across many brands of car. 235 is beginning of stretch obviously minimal on an 8.5j wheel, the 85% rule confirms this.
    "Technically they should work", as images show 235 is (if at all) barely stretched on 8.5J. If we must speak OEM fitment Audi puts 255's on 8.5J 19's which cost more, are worse on economy, won't look right and will rub if the car is lowered especially with spacers.

    OP resolved this issue anyway.

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    Quote Originally Posted by dpaz View Post
    I disagree. Compare for yourself using the calculator below with a 235 and 245 tyre. The diameter or rolling circumference of the 245 is roughly 1% different. Not a huge change but still.

    Tyre Size Calculator - Legal Requirements - Etyres
    A whole 1%!! If that affected speedo readings that much we'd be changing tyres every 6mths due to the wear alone;-)

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    Quote Originally Posted by DieselJake View Post
    ^^^ As dpaz said, could be around 5% depending on width too.

    Yes but you're missing the point, the difference is because the circumference changes as the profile ie 35 etc is a ratio of the width vs height(side wall). It has nothing to do with the width of the wheel its mounted on.


    "Technically they should work", as images show 235 is (if at all) barely stretched on 8.5J. If we must speak OEM fitment Audi puts 255's on 8.5J 19's which cost more, are worse on economy, won't look right and will rub if the car is lowered especially with spacers.

    OP resolved this issue anyway.
    Sorry, my bad. When you said "Technically should work" that implies to me that in principle it should work but is not the norm when in fact it is perfectly normal to run 245, 255s.

  27. #26
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    Cheers for all the replys guys, don't suppose any of you have towed anything with the 19s on?

    Just noticed that they have started doing the reps I'm after in an 18", I won't be messing with the suspension so I now have no idea what to do?
    2004 Audi A4 Avant, 1.8T 190 bhp, S-Line, Altlas Gray, Michelin Pilot Sport 2's, Phatnoise in the glove box, crome mirrors, cruise control, MIJ Performace 3 1/2" Exhaust and a detachable towbar!!

  28. #27
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    Cheers again guys, I'm not interested in changing the suspension and have an sline any of the pics above running standard sline suspension? Many Thanks Adam
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