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Thread: Another one on Wheels and Tyres

  1. #1
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    Another one on Wheels and Tyres

    Hi all,

    Now that Xmas is done with and the finances are starting to recover I'm starting to look into a new set of wheels and tyres for my '89 Rangie. I've checked out loads of threads and wiki's to see what I should fit.

    So I'd like to go to 265x75R16 on black steel 16x7 8 spokes or 'modular' I think they are called, the ones with the circular holes in. Should look good on the white(ish) Rangie.

    So I'm looking for some comparisons and to test my logic.

    From the stanard 205's to 265's I'm gaining about 60mm in width and 75mm in height (29" to 32"). The classic alloys are 7Jx16x33,0 as stamped on the alloy. I haven't been able to confirm but guess that the 33 is the offset and positive. So if I gain 60mm in width then that will be 30mm either side of the centre of the rim and to maintain clearance to the suspension components etc. a zero offset rim should do the job? I also think this will improve teh 'stance alot too, the track always looks a wee bit narrow in standard setup IMO.

    I'm expecting to have to do some trimming of the arches and probably add some flares. From what I can see by just going to 'sensible 32's I shouldn't need to trim much and being a five door that's probably a good thing.

    Any experience or advice gratefully received. Thanks in advance.

    Cheer, Neil

  2. #2
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    A suspension lift will fix your issues.

    265 is very wide and will affect the steering, ride quality and noise.
    It will put strain on steering box and other components.

    If you were in bush they may also be a bit hard to source.

    If you are after looks than sure go for it.
    In reality though a 235-245/75/16 is wide and gives good clearance.

    I had wide tyres on 2 cars and they drove me nuts with rubbing and making noise and just plain heavy.
    Others here I am sure will have their opinion s but they are mine this far.

    for sand driving, go wide and aggressive for sure but everyday stuff I would recommend 235-245 and no more.
    Factory recommends 195 or 225 from memory.

    Good model the RRC89.

  3. #3
    clean32 is offline AULRO Holiday Reward Points Winner!
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    i have just gone the other way, binned the 265s 33" and gone down to 245 31"

    much better

  4. #4
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    Cheers guys,

    I am also thinking of 235x85 which is about 32" aswell but a wee bit narrower and may not have just as heavy a feel. A friend is running them on his D2 and he says they are great on sand.

    I have a 2" spring lift so the fit should be OK.

    I seen on a post here somewhere that zero offset are illegal. Which seems a bit strange. I'm keen on changing the offset to improve the stance but reckon -25mm would be a bit much with the wider tyres.

    Cheers and keep the advice coming.

    Neil

  5. #5
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    235/85/16 will fit on the standard alloys (or steel RRC/Disco1) 16 x 7 rims - with a 2" suspension lift, and adjusting the steering lock stops on the swivels (to stop the tyres rubbing on the front control arms).

    Yes, the '33' stamped into the rim is the positive offset.

    You could go to a 12mm or 6mm offset - if you can find rims - not all that common anymore, without flares.
    Chappel Corner wheels & tyres in Melb. are importing a '0' offset RRC/Disco1 sunraysia steel 16" rim, but the outside edge of the tyre (235/85) ends up directly under the guard lip - if you compress the springs (often front, over a step out of a boghole) on one axle together, the tyres are likely to catch the guards.

    If you go for lots of cutting with LRA std width (2") fiberglass flares, then 285/75/16 on -25mm offset is just possible, but that is really more tyre width than a Rover needs.

    On a rigid/beam axle, the track is only supposed to be increased by a maximum of 50mm -ie 25mm each side, so a 6mm Positive offset rim is just a bit too far out. 8mm positive is the max legal - but I have never seen such a rim.

    Some cars have been engineered on the basis that 130's have a 20.6mm positive 16 x 6.5" rim with effectively the same axle assemblies, which allows a 0 offset fitment. Talk to a RWC tester and your insurance co.

    Rgs, LR4WD

  6. #6
    brownrangie Guest

    255/70

    I had BFG AT 255/70 16's on my classic alloys which is a little bit smaller in dia than the 245/75's. They look good and dont foul the body work

  7. #7
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    Quote Originally Posted by LR4WD View Post
    235/85/16 will fit on the standard alloys (or steel RRC/Disco1) 16 x 7 rims - with a 2" suspension lift, and adjusting the steering lock stops on the swivels (to stop the tyres rubbing on the front control arms).
    I got the 265\75\16 Maxxis buckshot's - on standard setup the guards cut in to the tread on the rear of one wheel - so I pulled them off after - with the 91 rangie I got with 2" lift - they fit no problems!

    I think after that 285 requires trimming of the guards - but I reckon you need a good reason for 285's.

  8. #8
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    The biggest tyres you can fit on a RRC 4 door without rubbing are 245/75x16. I hve had them on with no rubbing

    Spring lift makes NO difference unless you lower the bumpstops, as under full articulation the axle goes to exactly the same place as it did before.

    To fit even 245/75x16 , you have to remove the bolt sticking out in the inner rear guard at 12 oclock by grinding it down , and you have to grind the front inner flange of the rear guards down all the way down the door.

    I have had personal experience with this where a member of my club borrowed some 245BFG MTS for a trip to Innaminka, and the tyres plucked out the inner guards. Several standing on the rear bumper so that the axle was on the bumpstops saw about 1 inch clearance but under pressure the bumpstops will compress that far.

    I have seen 235/85x16s bind all the way along the rear part of the rear guards from the bottom up to about 11 oclock on full articulation on a 2 door which has more room than a 4 door. You have to do pretty serious cutting / flaring to fit them.

    All I can say is that people who say bigger will fit do not travel on rough tracks or that they have springs that are far too stiff and do not allow full articulation. Or that they have bump stop spacers.

    You can argue that this is no consequence but the issue is that the sharp metal bits can soon destroy a tyre.

    Regards Philip A

  9. #9
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    Re: Another one on Wheels and Tyres

    Thanks all,

    Some great feedback there. Especially Phillip, thanks.

    I'm looking to get good articulation and have a spring lift of 2". I will be spacing out the bump stops by that amount and in time dropping the shock hangers the same front and rear. No point in doing this until the new arms are in though.

    Seems to me the main problems are at the rear and that without knowing the wheel type and offset, not too much can be inferred from all the feedback.

    So it's 265x75 on zero offset black steel modulars (if I can get them), some trimming as Phillip mentioned with some cheap eBay flexible flares.

    Good feedback guys, thanks.

    Neil

  10. #10
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    Quote Originally Posted by PhilipA View Post
    All I can say is that people who say bigger will fit do not travel on rough tracks or that they have springs that are far too stiff and do not allow full articulation. Or that they have bump stop spacers.

    You can argue that this is no consequence but the issue is that the sharp metal bits can soon destroy a tyre.
    Regards Philip A

    I had a good long think about this as I really was hard pressed to find a solid answer to the same question the thread was started with.

    So I thought about it like this:

    Since putting on the 265\75\16 mudders I have been out a total of 4 times. (Yes I am noob to off-road with a 4WD in the driver position lol) Mostly around toolangi going down rocky track twice & some other pretty major tracks & made it up 80% of Elise track south of Yarra junction going in to - out & up out of some massive ruts. So I ticked off travel on rough tracks.

    Springs & shocks:
    Mmmm, well - they are Koni shockers & king springs, providing the 2" lift - fairly stiff... so perhaps they do not allow full articulation.. to be honest - I am not sure? Maybe?

    Bump stop spacers \ adjustments:
    This could also be the case - again I am unsure as I am still going over my setup. What I can say is when they were fitted to my stock 89 classic - the bump stops were adjusted to make sure they didn't rub - it was only off road that I found the guard cut in to the tread - at 12 o'clock.

    So I am going to confirm all of this info - perhaps a sticky can be made up so people know what they need to do in order to fit bigger tyres. I believe if I wanted 285\75 I would need a body lift or cut the guards :/ not going there so it don't matter!

    But also that I pretty sure I have gotten full movement from my setup in the way of articulation & haven't had the tyres rub or get damaged from the body.

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