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17" alloy spare wheel query

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13

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  • red_eye
    red_eye Posts: 1,211 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Combo Breaker
    That's a good match for 16" and 17". My summer tyres are 225/45/17 and winter are 205/55/16, it'll be fine.
    cheack a calculator, using the "go up in size go down in profile" rule they should be on 60 profiles.
  • mutley74
    mutley74 Posts: 4,033 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Combo Breaker
    red_eye wrote: »
    so your 17" wheel on the car would be a 205/50 17? if it is not the dealer supplied you with an incorrect tyre

    go up to the next size in tyre width or wheel dia you go down a size in profile and vice versa

    as I said current tyres on my current 17" alloys are current tyres are 225 45 R17 (manufacturer fitted).

    dealer supplied spare (as manufacturers stopped supplying spares) in my new car deal is a 205 55 R16 on 16" steel rim.
  • Iceweasel
    Iceweasel Posts: 4,881 Forumite
    Part of the Furniture 1,000 Posts Photogenic Combo Breaker
    mutley74 wrote: »
    as I said current tyres on my current 17" alloys are current tyres are 225 45 R17 (manufacturer fitted).

    dealer supplied spare (as manufacturers stopped supplying spares) in my new car deal is a 205 55 R16 on 16" steel rim.

    Those two sizes are as near as you will get to the same diameter and rolling circumference - so are correct.

    Doubters check here:

    http://www.kouki.co.uk/utilities/visual-tyre-size-calculator

    Interesting to know what make of car we are talking about though.
  • mutley74
    mutley74 Posts: 4,033 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Combo Breaker
    Iceweasel wrote: »
    Those two sizes are as near as you will get to the same diameter and rolling circumference - so are correct.

    Doubters check here:

    http://www.kouki.co.uk/utilities/visual-tyre-size-calculator

    Interesting to know what make of car we are talking about though.

    new type citroen C4
  • vaio
    vaio Posts: 12,287 Forumite
    Part of the Furniture 10,000 Posts Combo Breaker
    red_eye wrote: »
    it is a fail if presented at the test. but perfectly legal to as a temporary "get me to a tyre shop"

    if you want a same size wheel you will have to buy one, steels are cheaper to produce and supply

    I can see the logic behind skinny space savers and I can see the logic behind a full sized (steel or alloy) spare but buying an odd sized one that occupies the space of a full size one but wouldn't pass an MOT and is limited to <50 mph doesn't make sense to me.
  • vaio wrote: »
    I can see the logic behind skinny space savers and I can see the logic behind a full sized (steel or alloy) spare but buying an odd sized one that occupies the space of a full size one but wouldn't pass an MOT and is limited to <50 mph doesn't make sense to me.

    Only the space savers are limited to <50 mph. It all comes down to cost, although there's nothing stopping the OP picking up a spare alloy and tyre and swapping it over, there's only 20mm difference once it's in the boot.
  • vaio
    vaio Posts: 12,287 Forumite
    Part of the Furniture 10,000 Posts Combo Breaker
    really? I thought the only way you could have different sized tyres across an axle was if one of them was a temp get you home spare which a. wouldn't pass an MOT and b. was limited to 50
  • theclonetrooper
    theclonetrooper Posts: 102 Forumite
    Part of the Furniture 10 Posts Photogenic Combo Breaker
    edited 21 October 2013 at 12:01AM
    when I bought my second hand Renault Laguna estate one of the first things I did was sell the spare steel wheel, (which was new and unused, tyre still had the colour bands on the tread), I put the money towards buying a second hand Silverstone alloy wheel & a budget tyre to use as my spare wheel, (although I haven't had to use it yet & if I do I don't have to worry about if the wheel bolts will fit). Another good thing is the Laguna spare wheel well is huge which means not only can I keep the full size alloy spare but also the jack, wheel brace, a spare better extending wheel brace, spare wheel bolts & locking wheel nut "key", hi-viz jacket, decent size torch & brolly and all is under the boot floor mdf cover... so no loss of boot space.
    "Silence, Reverend Supermarket"
  • vaio wrote: »
    really? I thought the only way you could have different sized tyres across an axle was if one of them was a temp get you home spare which a. wouldn't pass an MOT and b. was limited to 50

    Spare wheels are intended for temporary use until you get a repair or replacement.

    MOT isn't really an issue unless you have a puncture on the way to the test, then if the garage does tyres you could ask them to do it while they have the car.

    Space savers are much thinner and make a car less stable at speed, thus limited to 50. A full size spare won't suffer with this issue as theres generally not a big difference in circumfence or width.
  • vaio
    vaio Posts: 12,287 Forumite
    Part of the Furniture 10,000 Posts Combo Breaker
    nah, my spare wheel can be used permanently as it is exactly the same as the other wheels/tyres.

    As far as different sized wheels/tyres go I'm pretty sure the Construction & Use regs make it unlawful to have different size tyres across an axle (see reg 27(1)a) but makes an exception for temp use spares in reg 27(3) but only if used at <50 mph.

    I can't see any distinction between the super skinny space savers and the almost full size option the OP is considering.

    Either it is the same as the rest of the wheels/tyres (in which case it can be used indefinitely and will pass MOT) or it's not (in which case it is temp use only, limited to 50 and will fail MOT)
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