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Thread: Tyre placard

  1. #1
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    Tyre placard

    Can someone please clarify the load ratings on the tyre placard on drivers side door of my MY10 D4 3.0lt.
    I currently have 19" tyres and am changing to 18" and thought I would double check before I buy new tyres. The FAQ states minimum load rating for the D4 is 109. Looking at the placard it has different load ratings for different sized tyres. 17"= 111, 18"= 112, 19"= 111, 20"= 109.
    Why would there be different load ratings for different sized tyres? Aren't they all carrying the same vehicle mass?
    Queensland regulations state;
    'Load ratings of tyres must be at least equal to those specified by the manufacturer on the tyre placard fitted to vehicles made after 1972.'
    I am concerned a tyre company may interperet this to mean minimum 112 load rating for 18" tyres on this vehicle.
    Would appreciate clarification, thanks.
    sean
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  2. #2
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    Tyre manufacturers make tyres for a wide range of vehicles - not just for one make or model.

    It is up to you, the vehicle owner, and then the tyre retailer, to match the best suited tyre to your vehicle, given the vehicle manufacturers specifications.

    I used to work for a commercial national tyre company, as a store manger, over a decade ago, and there was still confusion back then over load ratings.

    All tyres have load ratings, speed ratings, and pressure ratings imprinted/moulded on the sidewall, the tyre staff only have that information to go by. If you wish to have specialised tyres fitted, it will be at your own risk, and they should tell you that!

    I have refused, in the past, to fit 4x4 tyres bought in by customers when I, or my staff, were hesistant about fitting them on the vehicle. I have also refused to sell or fit tyres that customers picked out from the rack as they were not suited for their vehicles either.

    Most good tyre stores will look at your placard and make suggestions, they should ask how you use your vehicle (ie 80% off road, 20% on road etc) and make recommendations from there.

    I must say though I'm a liitle confused about the 'minimum tyre load' most tyres have a 'maximum tyre load' ( ie max load XXXkgs @ XX psi ) - but I have been out of the loop for a while.

  3. #3
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    My guess is that the load ratings were the highest available for the particular sizes in their chosen brands when LR did the tyre specs.
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
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  4. #4
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    I bet...

    that placard print is for more than one spec vehicle and that the rim/profile spec is not backwards compatable.

    so if your vehicle comes with 19 inch rims it cant have the 18's fitted and therefore cant carry the weight of the vehicle with the 18 inch rims.


    the tyre spec thats preceded with a T as near as I can work out is either a winter spec tyre or a space saver spare, fitting this also requires attaching a sticker to the windshield that clearly advises of the lower speed rating.
    Dave

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  5. #5
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    Quote Originally Posted by Blknight.aus View Post
    so if your vehicle comes with 19 inch rims it cant have the 18's fitted and therefore cant carry the weight of the vehicle with the 18 inch rims.
    Not for the D4 because 19" are optional on the 2.7.
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi, RTK base station using LoRa

  6. #6
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    An interesting point. The D3 placard had a similar listing but also a blanket statement to the effect that the minimum was 109. The tyres specified were much the same from memory. See if there's any other sub-placard anywhere else.

    The Victorian law says the tyres load rating must be at least the '...minimum ratings shown on the tyre placard'. Given they used plural that implies there are multiple ratings, as indeed there are now for the D4. Suspect that is the same for other states. Land Rover also modified the placard from the D3, and it is possible they intentionally omitted the D3's cover-all statement.

    So, if you want to stick to the letter of the law there are indeed different load ratings for different tyres for the D4, an interesting point I hadn't noticed. Not logical as you point out - the GVM doesn't change - but we're talking about the law here not logic.

    streetlander - what we're talking about here is the minimum load spec for a vehicle, which is always a minimum, eg no fitting 108 tyres to a D3. The maximum load is for the tyre itself.

    In the case of offroad tyres meeting minimum load rating isn't usually an issue.

  7. #7
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    The placard shows a multiple of ratings for various combinations of size. I think RMP is on the money in that the minimum of any of those ratings is the minimum allowed. Bolstering that idea is the fact that the ratings are not just for a particular rim diameter, but a complete size specification, eg 255/60R18.

    So if you fit a 265/60R18, that specific size is not specified, so one would have to look at the overall minimum. Note that the LR rims are rated to 940kg, which would equate to a 106 for a tyre, + some minimum safety margin.

    Regardless, there are several 255/60R18's at 112 loading - Pirelli ATR, Conti AT, GG AT2.



    Cheers,

    Gordon

  8. #8
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    Gordon - didn't you previously indicate the normal 18" rims will not fit a D4 3.0 and that was one of the reasons you got the special order of 18" rims for the D4.

    So is the OP putting your rims on or other 18" rims that most likely will not fit.

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  9. #9
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    The placard is a generic one for all D4's - 2.7, 3.0 and 5.0 - so it must cover all rim sizes available for all models. The 3.0 and 5.0 won't fit 17's or 18's, hence my customised 18" rims, which the OP has purchased along with 12 or so others, mostly from this forum.

    Cheers,

    Gordon

  10. #10
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    Quote Originally Posted by rmp View Post
    streetlander - what we're talking about here is the minimum load spec for a vehicle, which is always a minimum, eg no fitting 108 tyres to a D3. The maximum load is for the tyre itself.

    In the case of offroad tyres meeting minimum load rating isn't usually an issue.
    Thanks for that - was a bit confused!

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