D4 "oversize" tyres

[trebor]

I am probably looking at replacing the standard 255/60r18 tyres with a set of AT 265/60r18s. Can anyone please tell me who has changed size what impact it has had on the vehicle's on-road handling characteristics?

[The ho har's]

Welcome to the forum:)

Perhaps you should ask you questions in the 'pinnacles' D4 section;)

[trebor]

Hi

I am probably looking at replacing the standard 255/60r18 tyres on my TDV6 2.7 with a set of AT 265/60r18s. Can anyone who has changed size please tell me what impact it has had on the vehicle's on-road handling characteristics?

Nick
_______________________
ex '00 RR HSE; ex '01 RR 4.0

[trebor]

Thanks for the welcome and the hint. It was my first post on joining up!
Know my way round a bit better now.

Nick:D

[p38arover]

Threads merged. FYI, don't post the same question in multiple areas - the answers get split over the posts.

[TerryO]

Plenty of people on here have fitted 265/60x18" tyres to their D3/4's.

I have Cooper AT/3's fitted in that size and they do the job really well both on and off road, plenty of people have had bad experiences with Coopers over the years, but not to many complaints about the new ones like the AT/3's.

cheers,
Terry

[sniegy]

No Issues at all, a good sized tyre.

Cheers

[discotwinturbo]

Picked up my rims from GOE today, and had my oversize 285/60-18 Cooper LTZs fitted.

Cant wait to remove the new look from the tread....but that's a month or so away before I swap the wheels over.

This will be my 6th set of Coopers....so far no issues, flats, etc and plenty of mileage.

Brett....

[Disco4SE]

Picked up my rims from GOE today, and had my oversize 285/60-18 Cooper LTZs fitted.

Cant wait to remove the new look from the tread....but that's a month or so away before I swap the wheels over.

This will be my 6th set of Coopers....so far no issues, flats, etc and plenty of mileage.

Brett....
Hey Brett,
You must post some pics

Cheers, Craig

[Canaussie]

Yes post a few pics please


Sent from Billy's iPhone using Tapatalk

[discotwinturbo]

Will do.....Have them sitting in the shed, and they look great just lying on top of each other.

Won't be a while though for my next offroad jaunt.....but will post pics the minute they are on.

Brett....

[Canaussie]

I was having a browse at Maxxis tyres today and notice that they have a 18" 265. 65 bighorn. OD of 790mm, I wonder if that would be pushing it. It's actually smaller OD than above mentioned
http://www.maxxistyres.com.au/tyredetails.php?id=43&cat=4


Sent from Billy's iPhone using Tapatalk

[~Rich~]

They should fit fine, but as with the with the 285/60 R18 you would have to deflate the spare to get it to fit under the car.
If you have a rear wheel carrier you wont have this problem of course.
I think Gordon from GOE has had these tyres on his RRS.

[Glynhouse]

GOE has a list of 18" tyres available on their site, I think he lists the Maxis as needing a fair bit of modification to fit - not sure what of.
On my iPhone screen too small to go and hunt.

DD

[~Rich~]

I think it's only Rods or LLAMS required.

[Geedublya]

Until your suspension drops to the bump stops and then you need Gordon's emergency kit.

[Disco4SE]

You will need modifications should your tyres exceed 800mm OD.
The 18" Maxxis Bighorns should be fine.

As Rich mentioned, you will need to deflate your spare.

Cheers, Craig

[discotwinturbo]

Had my tyre wheel alignment today, and removed the 20am (26) fuse. The car sat perfectly still....not adjustments by the suspension.....thanks for the tip guys.

Attached are pics of my new touring rubber. Originals go back open again after the weekend. Will alternate as needed.

Normal height so far no rubbing at all...even at -20 with LLAMS. Tried to reverse up a ramp with steering wheel turned at full lock both ways with no rubbing....so far so good. If it does rub its likely only to be minor as others have experienced. Thought I may need to run around on +30 but no need.

Can't wait to hit the beach this weekend, then Israelite Bay over Christmas, then Warren River dunes on Australia Day long weekend....I guess I might leave them on until the 29th January.

Can't seem to attached photos the right way up.....and can't attach more than one!
Pics are correct when I up load them, but upside down when I view them...

Brett.....

[101RRS]

So if you have a suspension problem and it goes down to the bump stops will the wheels still turn and steer??

Garry

[~Rich~]

Front of the rear wheel arch liners will be most likely to rub.
No issue but you may wear through the lining, I have on both sides on mine!
Driving over a million moguls in the Nth Simpson did it for me. :p

[discotwinturbo]

Gary,

I went access height and -20 on LLAMS. Still drove fine, and turned without rubbing.....but I did not try full lock turn. But transportation height may see it rub.

Brett....

[101RRS]

Gary,

I went access height and -20 on LLAMS. Still drove fine, and turned without rubbing.....but I did not try full lock turn. But transportation height may see it rub.

Brett....

That is still only access height - the bump stops are lower and where the car goes if there is an issue. With normal size tyres (and a bit larger) the car will still drive albiet lumpily but with much larger tyres the body may just drop down onto the tyres and not able to move at all - a real issue if out in the boonies.

Garry

[~Rich~]

Mine still drive at that height, yes the ride is very poor but the wheels still turn!

[discotwinturbo]

Hi Gary,

I know it's still not transportation height....but from what I have read it's only 20-25mm difference from access with -20mm on LLAMS....but that could be enough to bugger me.

Not that I can see very well at access and -20mm, but it appears that there is still room.

Any ideas if its possible to trigger transportation height ?

Having the 26k service next Friday....maybe I leave the tyres on and get them to drop it and see.

Brett.....

[101RRS]

Rich has the same tyres and his posts you will still be right if she goes to the stops.

Most people think that if it is OK at Access height then there will be no issue but the worst case scenario needs to be considered but looks like you are fine.

Garry

[Graeme]

Brett, have you tried pressing the red button whilst at -20 (extra low) and access height?

[discotwinturbo]

Hi Graeme....no I have not tried that.

Mate....I can't even recall what the red button was for :o

Brett....

[Graeme]

Primarily the red button gives extra low when on low or extra high when on high. Extra low + access mode is on or is very close to the bump-stops.

[discotwinturbo]

Thanks Graeme....your notes would have said that :(

That's a pretty neat trick....on top of the LLAMS neat tricks :thumbsup:

I shall give it a try tomorrow, but as one of the other guys said, he has been down to his bump stops and been just OK.

About a week ago, I popped into the deli near my home. Two guys pulled up in a hilux and I could hear them talking about how low the disco was and how crappy it would be off road....I was on -20.

When they walked inside I hit the offroad button, and LLAMS +50.

I grabbed my paper and mocha, and hopped back into the disco. They came out, saw the disco 120mm higher than before.....the jaws dropped. A priceless moment.

Brett....

[discotwinturbo]

Well I took my new 285/60-18 Cooper Zeon LTZ's for a sand run.
These tyres have transformed my D4 in soft sand.
I used less throttle as recommended by Gordon which helped, but the D4 felt like I was back in my 33 shod Patrol. It just ate the sand up, and I now have the perfect D4 for me.
Popped the factory tyres back on for town even though the Coopers feel almost as good.
Looking forward now to Israelite Bay over Chrissy, and Callcup in January.
Brett....

[Runnadude]

I must be one of the unlucky ones. I have a set of AT3s on my D3. I've had three punctures in them so far. One of them was due to offroad work, one due to a tech screw on the bitumen and one from a *big* stone from a rough dirt road that is suitable for normal cars. This latest one has me in a quandary. The local tyre shop patched it (illegally as it has cut cords) and put it on as a spare. I'm presently hunting a set of two across Melbourne. New Years Eve is probably not the best time :oops2:

[Graeme]

and one from a *big* stone from a rough dirt road that is suitable for normal cars.This sound like my road. I recently asked the council to make their September's emergency repairs reasonable for normal cars but the chief engineer drove it and said it was possible to get through in a normal car. The big rocks destroyed a truck tyre but my LT Yokos have survived unscathed to date.

[Drizzle]

That is still only access height - the bump stops are lower and where the car goes if there is an issue. With normal size tyres (and a bit larger) the car will still drive albiet lumpily but with much larger tyres the body may just drop down onto the tyres and not able to move at all - a real issue if out in the boonies.

Garry

So what is the largest diameter tyre that can be fitted which won't imobilise the vehicle if it drops to the bump stops?

[Muskie]

the Largest legal wheel for a 2009-2013 D4 is a 20', and for the newer 2014/15 I think that you can go upto 21', but dont quote me...

Best Rgds Paul

[plusnq]

A few sites say 265/65r18 is the biggest without fender modifications for rubbing etc. Gordon at GOE has great info on mods and which tyres fit.

[Drizzle]

Thanks Muskie, but I already have 18" rims. I'm trying to determine what is the overall maximum wheel/tyre diameter that can be fitted and will still turn if the vehicle drops to the bump stops. If the tyre is too big the vehicle will literally sit on the tyre and you'll be stranded.

I have had my D3 drop to the bump stops before but had the standard 255/60R18 tyres and managed to limp home, so I'm a little wary of how big we can go as we do travel to remote areas. We crossed the Simpson last year, planning Cape York this year.

I've since found a thread which Gordon has fitted Mickey Thompson ATZ 265/70R17 which are 802mm total diameter which didn't hit when on the bump stops on a D3. Also stated a slightly larger Super Swamper tyre of the same 265/70R18 size would not fit. Must be slight variations in manufacturers standards?

http://www.aulro.com/afvb/d3-d4-rrs/151811-can-d3-17s-fit-d4-2-7-a-2.html

So from Gordon's experiences, it would seem the limits may be just over 800mm?

But then Graeme indicated his D4 drops about 50mm from access height to bump stops, whereas Gordon's RRS only drop 15mm.

A 285/60R18 tyre (799mm) is slightly smaller in diameter than the 265/70R17 mentioned above.

Currently looking at 285/60R18 tyres and trying to confirm if anyone has had issues with fitting these size tyres and the bump stops.

[discotwinturbo]

I have been down to LLAMS -20, super low setting and access height....no rubbing, but if anything other than a good smooth road, you would not be going well as they car fuel tank is almost touching the road.

Emergency airup kit from GOE is the way to go.

Brett....

[scomac]

I was getting a sore neck :D

[discotwinturbo]

I was getting a sore neck :D

Haha....saw the upside down pic.

That's at standard height.

Brett....