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Car wheel sizes - help

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  • #1

    Car wheel sizes - help

    Maybe some of you guys and girls who know all about cars can help me here.

    I am trying to assemble a set of steel wheels for my zafira CDTI (which has 17" alloys normally) for winter use with snow tyres (last winter was a nightmare up here in the hills).

    I picked up 3 off (I guess the owner has written one off and then fitted an alloy set) Vectra C wheels yesterday for next to nothing - they are 6.5Jx16H2 ET41 also marked GM TD

    When I got my car I insisted they put a spare in it rather than a no hope can and pump, which I knew was a 16" steel with a similar spec, but I find it has a slightly different spec - 6.5Jx16H2 ET37 also marked GM H2.

    I had planned to run these 4 steel wheels with snow/winter tyres and carry one of my alloys as a spare - but maybe mixing ET37 and ET41 is not wise or illegal? Maybe I wouldn't notice with the 4mm offset mismatch on the rear of my front wheel drive car?

    The ET number is an offset so maybe I could fit a 4mm spacer on one place and use the ET37 wheel?

    Maybe I need to pick up another Vectra C wheel?
    www.heli-extreme.co.uk a good club in south Sheffield
    600n pro BeastX Align DFC head bls251, 3xbls451, align gov, 600d, 2in1
    trex500, BeastX DS510 swash, Beast X cutr and carve head DS520 HK3026-1900, Align 425D blades, 5S4200 rev'trix, K&BDD dampers, AR6200
    "450" superframeSTK, align DFC head v2tail, hk22281-8 on 3S 9650w9257gear commander 55A align 325D hitec digitals Tarot ZYX, AR6100e
    MCPX kbdd tail and blades, miniaviation bats

    Dont spend more flying models than it costs to fly for real
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  • #2
    hi mate i in the motor trade also mot tester what you want to do is not illegal to fit the offset on the wheels will only marginal difference to the handling at high speed but at sensible speed you wont notice the difference to proformance at all have done this myself a few times as a spare get you out of the cart situation

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    • #3
      Id only get spacers if the wheels rub, 4mm isnt much so could be ok as smaller narrower tyres.

      The aspect ratio/nominal size is the only way it will fail an MOT, not off set of wheel.

      Each axle must have matching pair of tyre combination when presented for MOT. Not sure how it works with spare wheels and space savers.
      I guess if you were in an accident and the axle combination didnt match it would go against you ??
      Mike
      www.RC-Scotland.com

      T-Rex 700G G270 DS610s GP750/DS650
      TZ Frenzy .53 Red Line
      T-Rex 600 .52 ASP
      T-Rex 600 .80 ASP 4ST

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      • #4
        With get you home spares they are only legal to drive to home/tyre shop at the stated limited speed.
        I'm looking for another vectra C 16" steel I think, if anyone has one - as it makes sense to leave the slightly odd one as the spare year round.
        From what I've seen on ebay the 4th one could cost over twice as much as the three I bought though! :(
        www.heli-extreme.co.uk a good club in south Sheffield
        600n pro BeastX Align DFC head bls251, 3xbls451, align gov, 600d, 2in1
        trex500, BeastX DS510 swash, Beast X cutr and carve head DS520 HK3026-1900, Align 425D blades, 5S4200 rev'trix, K&BDD dampers, AR6200
        "450" superframeSTK, align DFC head v2tail, hk22281-8 on 3S 9650w9257gear commander 55A align 325D hitec digitals Tarot ZYX, AR6100e
        MCPX kbdd tail and blades, miniaviation bats

        Dont spend more flying models than it costs to fly for real

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