19" Scorpion ATRs fitted on the D4 today.

[Celtoid]

First impressions....they look great. Far more robust looking than the OEMs....far more capable looking too.

Only driven a few Ks on the road....they feel different....not better, just different...I'll have to put my finger on that. Pretty smooth and quiet though.

On the technical side.....the boys fitting them had a mis-hap. It's never been mentioned on this site (that I've read)...but do you need to remove the tow hitch to get the spare in with a Scorpion fitted (standard size)? You didn't have to with the Wrangler....I can attest to that....I've changed three in the last week! :mad:

But the guys broke the winch/cable assembly that retracts the spare, as it got stuck on the tow-hitch....even though I'd told them the key was in the glovebox. :angrylock:

So that leads me to these questions:

Did they screw up or is the added tread on the ATR the problem? Well yes they screwed up, as they obviously tried to force it, but can it be done with the standard hitch in place?


If so (as in the diameter has changed), it must have affected my speedo...right?

Thanks in advance.

Cheers,

Kev.

PS...Oh, yes....they are paying for the broken bits.

[Celtoid]

Using the Spare Wheel Winch (Hot Tip)
When using the spare wheel winch to either remove, refit & just wind up the cable (say when you throw the punctured wheel into the loadspace to be taken for repair) out of the way... You MUST have Tension on the cable at ALL times...otherwise the cables binds in the winder & jams.

Just cut this, from the FAQs...

Was aware of this and briefed the guy before he touched the car. I changed 3 wheels in a week and tensioned the cable every time....no issue!

Guess he forgot.....or forced the buggery out of it trying to get the wheel past the tow-hitch......:(

Cheers.

Kev.

[sniegy]

Hi Kev,
was going to get back & let you know but you beat me too it. Have had a week that nearly every 2nd customer that walks in has said the same thing, hence why i thought i would just do a quick tip.

With regard to the wheel not fitting on std size into the spare wheel cavity, that an interesting one, It "Should" just fit in, regardless whether the tow hitch is in place or not...

Strange one that..:o

Cheers

[bbyer]

I looked up the calculated diameters for the Good Year Wrangler HP 255 55 R19 at 30.0" and for the ATR, 30.3" so that is effectively the same.

I suppose your HP's were worn so the OD would be a bit less and the ATR's could be a bit bigger as well since they are brand new. My guess is however, that since the guys destroyed the winch, that they may be happier working on Tractor Trailer units where a bigger sludge hammer is always the first solution.

I might add however that I watched an Audi mechanic trying to get my Land Rover factory spare, (the funny one), up back into the wheel well. To his credit, rather than fight it, after some struggle, he removed the winch, took it apart, found it to be OK, lubricated it a bit, and then reinstalled.

Then he got a helper and together, the two of them got it up into the well. Since then I have never dropped it down, but always tied a full sized spare into the rear area.

I still have the exhaust shield installed; I know some have removed it to get more space and some remove a rubber donut thing just to the underside of the winch location to get more space - me not.

[Celtoid]

Hi Kev,
was going to get back & let you know but you beat me too it. Have had a week that nearly every 2nd customer that walks in has said the same thing, hence why i thought i would just do a quick tip.

With regard to the wheel not fitting on std size into the spare wheel cavity, that an interesting one, It "Should" just fit in, regardless whether the tow hitch is in place or not...

Strange one that..:o

Cheers

That's no worries mate.

I wasn't there, so I have no idea what he has done. Anyway, I've talked to the owner...who's a good guy, and he knows that if he can't get it working, he's on the hook for a new one.

Of course I'll test it multiple times before accepting that it's fixed.

Do you know anything about the Tight Tolerence Mode? Some folks think it's not neccesary for a D4 alignment...just put it in 'Normal' height.

Regards,

Kev.

[Celtoid]

I looked up the calculated diameters for the Good Year Wrangler HP 255 55 R19 at 30.0" and for the ATR, 30.3" so that is effectively the same.

I suppose your HP's were worn so the OD would be a bit less and the ATR's could be a bit bigger as well since they are brand new. My guess is however, that since the guys destroyed the winch, that they may be happier working on Tractor Trailer units where a bigger sludge hammer is always the first solution.

I might add however that I watched an Audi mechanic trying to get my Land Rover factory spare, (the funny one), up back into the wheel well. To his credit, rather than fight it, after some struggle, he removed the winch, took it apart, found it to be OK, lubricated it a bit, and then reinstalled.

Then he got a helper and together, the two of them got it up into the well. Since then I have never dropped it down, but always tied a full sized spare into the rear area.

I still have the exhaust shield installed; I know some have removed it to get more space and some remove a rubber donut thing just to the underside of the winch location to get more space - me not.

Thanks mate. Good to know he shouldn't have had any issue with it...I was concerned that I'd given him false info regarding not needing to remove the hitch (with a different type of tyre than the Wrangler). But in my defence...he had the key for the hitch, my wife had already told him where it was.

If it fits no worries, I won't be removing anything either.

Cheers,

Kev.

[OzAd4x4]

Your tyre should fit fine...I've just fitted Cooper LTZ's in a 265/70/17 size which is approximately 40mm bigger than those that came with my 2.7D4.

The trick is bend the exhaust guards back a little, drop some pressure out of the spare (mines at 15PSI) and use a bit of soap on all the points that touch. Then as you wind it up, as it starts to meet all the points in which it touches push the wheel upwards towards the back near the exhaust pipes. Following this method and doing it a little bit at a time I've got the brand new spare which is quite a bit bigger sitting in the factory spot ;)

I stopped the tyre guys doing it luckily as they were in the process of just cranking the winder despite it not going :mad:

Hope this helps...

[Celtoid]

Your tyre should fit fine...I've just fitted Cooper LTZ's in a 265/70/17 size which is approximately 40mm bigger than those that came with my 2.7D4.

The trick is bend the exhaust guards back a little, drop some pressure out of the spare (mines at 15PSI) and use a bit of soap on all the points that touch. Then as you wind it up, as it starts to meet all the points in which it touches push the wheel upwards towards the back near the exhaust pipes. Following this method and doing it a little bit at a time I've got the brand new spare which is quite a bit bigger sitting in the factory spot ;)

I stopped the tyre guys doing it luckily as they were in the process of just cranking the winder despite it not going :mad:

Hope this helps...

Thanks mate, I guess I'll find out at 8am tomorrow.

Cheers,

Kev.

[~Rich~]

Your tyre should fit fine...I've just fitted Cooper LTZ's in a 265/70/17 size which is approximately 40mm bigger than those that came with my 2.7D4.

You sure they are LTZ Zions? I thought they only did 18's, 20's, 22's & 24's!

[petera]

my silent armours 265/60/R18 wont fit in the spare area unless i remove the hitch.
Cheers,
Petre

[~Rich~]

My 285 / 60 R18 LTZ's will if I take off the shield, let all the air out and shoehorn it in :)
Mind you to fit the hitch in I need to use a jack to push the hitch up about 5mm to get it to lock!

[WhiteD3]

my silent armours 265/60/R18 wont fit in the spare area unless i remove the hitch.
Cheers,
Petre

Peter, just to clarify, the silent armours do fit ok once the hitch is removed? I ask because I've got a D4 coming and think I'll go with these tyres.

Cheers.

[petera]

Peter, just to clarify, the silent armours do fit ok once the hitch is removed? I ask because I've got a D4 coming and think I'll go with these tyres.

Cheers.

they do fit into the spare recess once the hitch is removed. It is the same degree of difficulty as putting the OEM 255/R19 Wranglers in once the hitch is gone.
I am so far happy with SA's except for gouge as posted previously, but to be fair, i think it could happen with any tyre.
Cheers,
Peter

[Graeme]

I had 19" ATRs on my D4. The trick is to keep the wheel sloping up at the back to ensure it doesn't catch, both when raising and lowering. Even my 30.8" LT245/70-17 Yoko A/T-S fits but needs the rear to be up behind the hitch before the front is wound into place.

[Celtoid]

I had 19" ATRs on my D4. The trick is to keep the wheel sloping up at the back to ensure it doesn't catch, both when raising and lowering. Even my 30.8" LT245/70-17 Yoko A/T-S fits but needs the rear to be up behind the hitch before the front is wound into place.


Thanks Graeme,

Tested the tyre retraction winch (winder) and it works OK now. However, I couldn't get the tyre to go down...as it got stuck between the hitch and the exhaust guards. No issue...probably muck with the tyre a few inches at a time or take the hitch off. If you had two people you may be able to move the tyre up and down easily. Or you could 'adjust', as others have, the tyre bay.

Anyway....I then thought about tyre pressure...as others have said that they needed to decrease for larger tyres. I have been trying to work out the ride difference between the Wranglers and the Scorpions....the Scorpions feel 'firmer'. I figured that was the carcass strength but wasn't sure.

I've got a run of the mill tyre guage and one fitted to my compressor. Neither are top-end but both read in the same range. I checked the tyres, and they are all at 40-42 PSI. It states quite clearly on the tyre that you should not exceed the MAXIMUM pressue of 40PSI....and this is with cool tyres and unloaded! Not happy Jan....:mad:

So....tomorrow's conversation with the tyre guys tomorrow aside....what range of pressures should I run these tyres on?

For example, Wranglers:

Super soft sand < 20 PSI

Soft sand ~ 20 PSI

Normal - As per the placard - 33 & 36 PSI

Heavy - As per the placard - 36 & 42 PSI

Thanks in advance.

Regards,

Kev.

[Graeme]

It states quite clearly on the tyre that you should not exceed the MAXIMUM pressue of 40PSI
I haven't checked my ATRs but I'm surprised at the max pressure as I thought they were 50 or 51. Are you sure that pressure isn't for seating the bead? If I remember, I'll check mine tomorrow.

[Celtoid]

I haven't checked my ATRs but I'm surprised at the max pressure as I thought they were 50 or 51. Are you sure that pressure isn't for seating the bead? If I remember, I'll check mine tomorrow.

Oops. that has just probably saved me an embarrassing conversation....:(

Thanks mate.

Just looked again...at the 'small print' on the tyre. It isn't very clear what they (the manufacturer are getting at) but in light of what you just posted, I think you're right....I think they are fitting instructions only.

There doesn't appear to be any other pressure guidance other than the suggested 'follow the placard'. Obviously was concerned that a one size fits all concept, may be flawed.

Either way, it seems that the tyre pressures that I have are a shed load higher than the placard.

So can I just apply the same range of pressures as the Wranglers?

Appreciate your help.

Regards,

Kev.

[WhiteD3]

I run my R18 scorpions at the placard pressures. Great ride, even wear.

[Graeme]

I used the placard pressures for the ATRs. I have the LT 17s at the same pressures and will monitor how they wear.

[Celtoid]

Thanks for the tyre pressure advice....I'll drop pressure to follow the placard.

Drove in the rain today....grip really well....I'm pretty pleased.

They feel lighter in the steering than the Wranglers but that may be the higher tyre pressure...which could explain the firmness too. I'll see what they are like once I've aired down a bit.

Thanks again.

Kev.

[Graeme]

I only drove about 1 km on the original tyres so cannot say whether the ATRs felt firmer or not.

[Celtoid]

Gave them a bit of a calibrated push in the wet today, round some tight corners and applied reasonably hard braking on some straights....just to get a feel for them. Did this incrementally so that I could control the car should it let go.

Didn't go crazy but certainly felt pretty sure footed. No slippage at all.

Steering is definately lighter than before and if that doesn't change with less tyre pressure, will take a bit of getting used to.

Also drove over some mud and grass at a mate's place (pretty hilly)...Wranglers usually spun but got through OK.....no issue at all....no slips, no spins.

Quite pleased thus far.

[Graeme]

My only complaint about the grip of the ATRs was when on 2 occasions they aquaplaned at 110 kph in very heavy rain. Perhaps I shouldn't have been doing that speed but up until each time they slipped, I felt that I had good control of the vehicle.

[Celtoid]

My only complaint about the grip of the ATRs was when on 2 occasions they aquaplaned at 110 kph in very heavy rain. Perhaps I shouldn't have been doing that speed but up until each time they slipped, I felt that I had good control of the vehicle.


Good to know Graeme, I've gone through lots of water at lower speed (70 - 80) with no issue (Wranglers) and would be inclined to think that the result would be the same at higher speed.

I'll be more careful now with the new boots.

Cheers,

Kev.

[Mike_S]

Had a couple of aquaplaning moments with my ATR's over the last 30,000 miles, always with very heavy rain on the motorway or standing water hit at speed (by that I mean about 80mph).

One thing I have noticed them becoming susceptible to now they're a bit worn is sliding on damp roads, ie after a long period of dry weather followed by very light rain or just a light drizzle in the morning (so possibly linked to cooler road surface as well). I can feel the front end lose grip on tighter corners, just doesn't have the same bite anymore. This doesn't happen when it's rained properly, just when it's a very light rain / drizzle leaving the road surface damp.

Bear in mind they're down to ~5mm now, so probably only another 10,000 miles before I'll be changing them and relegating this set to spares.

[Celtoid]

Had a couple of aquaplaning moments with my ATR's over the last 30,000 miles, always with very heavy rain on the motorway or standing water hit at speed (by that I mean about 80mph).

One thing I have noticed them becoming susceptible to now they're a bit worn is sliding on damp roads, ie after a long period of dry weather followed by very light rain or just a light drizzle in the morning (so possibly linked to cooler road surface as well). I can feel the front end lose grip on tighter corners, just doesn't have the same bite anymore. This doesn't happen when it's rained properly, just when it's a very light rain / drizzle leaving the road surface damp.

Bear in mind they're down to ~5mm now, so probably only another 10,000 miles before I'll be changing them and relegating this set to spares.

We get a lot of those conditions in Queensland. Just about everytime it's been dry, it's pretty greasy after the first bit of rain.

Cheers

[Celtoid]

Dropped the Scorpions to the placard pressures last week.

Much, much better/more comfortable ride. :)

[Celtoid]

Wife went out for dinner tonight with some of her girlfriends, she's got my D4.

She called about 45 minutes ago to say that she has a flat, apparently the sidewall has been torn out of the front LH tyre. She wasn't aware that she had even hit anything.

I've heard that the some ATRs can have side wall issues, including the Scorpions.....but surely an offroad tyre can't be that bad!

I'm stuck here with our kids, so I guess I will have to wait until LR Roadside Assist do their thing and I get to eyeball the tyre.....geeeeezzzzz!!!!!:mad:

$495 a tyre, they've only got about 3000ks on them.........:mad::mad::mad::mad:

[Disco4SE]

Have covered 33K now with the 19" ATR's and I must say, I am extremely happy with them. Great in the wet and dry, and good for light off road as well. I have a second set of wheels with MTR's, so havent tried the ATR's in thick mud as yet.
They seem to be wearing very well and there are no signs of any defects.
Cheers, Craig

[jonesfam]

She wasn't aware that she had even hit anything.

Wives never are!:D

[Celtoid]

Have covered 33K now with the 19" ATR's and I must say, I am extremely happy with them. Great in the wet and dry, and good for light off road as well. I have a second set of wheels with MTR's, so havent tried the ATR's in thick mud as yet.
They seem to be wearing very well and there are no signs of any defects.
Cheers, Craig

Don't get me wrong mate, even though I'd only done 3K on them, I was more than happy.....great, quiet, smooth ride and good wet and dry traction. Haven't done more than a few mud & gravel tracks on them but they poohed all over the OEMs.

I am just paranoid and frustrated that I've had so much bad luck with tyres of late....and at a smash to my wallet!

I've interrogated my wife...LOL....but am no closer to a definative answer. She parked at the kerb, which was full of dead leaves and she was unaware of hitting or driving over anything. However, there was a mini-skip on the pavement, as a renovation or construction was underway.

I've looked at the tyre and something his taken a chip out of the wheel and has cut into the tyre near the rim, penetrating both rubber and carcass. Unfortunately, the 'wound' site is masked, as the deflated, ballooned tyre, must have dragged against the kerb as she went to drive away, causing ragged tearing of the rubber.

Best guess is a piece of steel, maybe rio, was lying next to the skip and hidden by the leaves......

:mad:

[~Rich~]

4wd Action magazine has a test of All Terrain tyre.
The Pirelli ATR came out on top of 9 brands.
Just beating the Cooper STMaxx on the 265 / 75 R16 size.

[Disco4SE]

Women + vehicles, machinery, technology = disaster

[Disco4SE]

4wd Action magazine has a test of All Terrain tyre.
The Pirelli ATR came out on top of 9 brands.
Just beating the Cooper STMaxx on the 265 / 75 R16 size.
Noticed that Gordon from GEO put the ATR's on his own transport

[Plane Fixer]

Saw a grey NSW reg D4 at Canarvon airport today with Scorpions and had obviously towed a van or trailer over dirt roads. The tyres were in very good nick considering. It certainly appears the way to go as the wranglers appear too road orientated for anything but tarmac.
I am currently driving a company Hilux with 'P' tyres and on a good gravel road already had one puncture on the Murchison road.

[Celtoid]

Saw a grey NSW reg D4 at Canarvon airport today with Scorpions and had obviously towed a van or trailer over dirt roads. The tyres were in very good nick considering. It certainly appears the way to go as the wranglers appear too road orientated for anything but tarmac.
I am currently driving a company Hilux with 'P' tyres and on a good gravel road already had one puncture on the Murchison road.


I actually found the Wranglers surprising, in as much as where I got with them....when new. Not very good understandably in mud and probably would get shredded very quickly in sharp rocks.

I think for most drivers they would be OK until they get beyond 40% wear...then they became woefully prone to punctures.

Impressed with the Scorpions so far. :)

[WhiteD3]

I actually found the Wranglers surprising, in as much as where I got with them....when new. Not very good understandably in mud and probably would get shredded very quickly in sharp rocks.

After shredding/ripping 3 Wranglers I put Scorpions on the D3 and never looked back.

Just fitted a set to the D4.

[doyfam]

Had a couple of aquaplaning moments with my ATR's over the last 30,000 miles, always with very heavy rain on the motorway or standing water hit at speed (by that I mean about 80mph).

One thing I have noticed them becoming susceptible to now they're a bit worn is sliding on damp roads, ie after a long period of dry weather followed by very light rain or just a light drizzle in the morning (so possibly linked to cooler road surface as well). I can feel the front end lose grip on tighter corners, just doesn't have the same bite anymore. This doesn't happen when it's rained properly, just when it's a very light rain / drizzle leaving the road surface damp.

Bear in mind they're down to ~5mm now, so probably only another 10,000 miles before I'll be changing them and relegating this set to spares.

Hi all

My D4 oem's have done 31,000 and on a recent trip to Byron Bay through some heavy rain, the aquaplaning was quite scary. There is a fair bit of tread left however I am thinking of changing early. Reading some of the posts, it looks like the scorpion ATR's are about the only viable 19" option.

Are they readily available at the moment?

[Mike_S]

19's you're restricted to either the Scorpion ATR's (not the normal Scorpions you've probably got) or the General Grabber AT's. GG's are cheaper than the Pirelli's I think, just depends what's available at the moment.

[Celtoid]

19's you're restricted to either the Scorpion ATR's (not the normal Scorpions you've probably got) or the General Grabber AT's. GG's are cheaper than the Pirelli's I think, just depends what's available at the moment.

OK, scratching my head....My D4 3.0l came with Goodyear Wranglers....I thought that they all did in Oz.

However at LR in Brisbane one day, there was a wheel with (19") Pirelli Zero's....they looked like the Wrangler equivilent...with maybe a slightly more aggressive tread.

Did LR change suppliers?

[jb747]

I've used Pirelli ATRs on two previous cars (non LR). In both cases they provided dramatically more grip, wet and dry, than the OEM tyres. They will be my first choice for a replacement tyre for the Disco.

[doyfam]

I've used Pirelli ATRs on two previous cars (non LR). In both cases they provided dramatically more grip, wet and dry, than the OEM tyres. They will be my first choice for a replacement tyre for the Disco.

Yesterday I was quoted $511 each fitted, for the Pirellis. Does this seem about right or a bit expensive?

[Celtoid]

Yesterday I was quoted $511 each fitted, for the Pirellis. Does this seem about right or a bit expensive?

Cost me $495 a few months ago....my local mechanic shopped around.

A Bob Jane dealer (who I've always used for my sedans, as they always used to get the best price) were $5 dearer but were going to throw in a wheel alignment. Unfortuately they can't do a proper wheel alignment on a D4, so I went with my local guy and got LR to organise the WA.

What about the GG AT2 (?)....they are a fraction of the cost and have had good write ups on this forum?

Cheers,

Kev.

[doyfam]

Cost me $495 a few months ago....my local mechanic shopped around.

A Bob Jane dealer (who I've always used for my sedans, as they always used to get the best price) were $5 dearer but were going to throw in a wheel alignment. Unfortuately they can't do a proper wheel alignment on a D4, so I went with my local guy and got LR to organise the WA.

What about the GG AT2 (?)....they are a fraction of the cost and have had good write ups on this forum?

Cheers,

Kev.

Thanks Kev, I checked their website and couldn't find them in 19". Looks like its the Pirellis. The price is close enough for me. Thanks for your help.

[DiscoWeb]

Doyfam,

The other option, which is becoming increasingly popular is to order them from Tire Rack in the US.

Seems they will be delivered in a week or two cost is about 60 - 70% of retail here and most who have gone this route seem to suggest it is hassle free. Just need to get someone to fit them.

Might be worth checking out.

George

[elsey]

To be more precise the tyres that you should be looking at in 255 55 19R are General Grabber AT not the AT2. The GG AT is available in the required size albeit in limited at the moment as they are the latest version that supersedes the AT2.

I believe that they are directly imported by Continental. I have found at the moment that most tyre dealers do not have information on them and invariably tell you that they are not available. It is only once you insist that they are and they contact the importer that they get the right (current) information.

When my Wranglers wear a bit more I will be fitting the General Grabber ATs as part of my top-end trip preparation.

Have a look at the posts on this site re the GG ATs

Lou...

[NauticAl]

There are other threads on this but I have just bought a set of General Grabber AT's here in Perth for $320 each. Others have bought them in the eastern states for as low as $270 apeice.

Cheers

Al

[stig0000]

me old man just got some generals AT2 on his disco,,, at 280 a tyre he recons its well worth a shot, the scorpions were 480 cheapest i found around here,

[roamer]

I got Pireli ATRs 255/55/19 from Tirerack US delivered to the door for $328 ea and $15 fit and balance .by local guy about a year ago, and only took 6 days to arrive


Cheers Ken

[jb747]

The US Tire Rack option has become very popular with the performance tyre brigade. Generally, they have the tyres available for immediate shipment, their range is vastly better than what is available in Oz, and it's all very quick. Even including shipping, when you're talking about $500 tyres, they are about 20% cheaper than buying here. Given that I had to wait months last time I ordered the Pirellis here, it's definitely the way I'll go next time I need rubber.

[brad72]

I just got 4 Pirelli Scorpion ATR 255/60R18's fitted to my D4 fitted yesterday and I am very impressed

They steer better, are quieter than the oem Wranglers on both hot melt and 3/4 stone bitumen, and have less wallow going around corners so all in all very happy.

Price was $400 each so not too bad. The main advantage of he scorpions was I could keep the wrangler spare as the tire is the same size. I was going to get the GG AT which were $275 each but since I do 80% onroad driving I didn't want to compromise cabin noise. I have become quiet fond of how quiet it is inside the the D4 cabin and with the Scorpions fitted you can hear a penny drop.

[Celtoid]

I just got 4 Pirelli Scorpion ATR 255/60R18's fitted to my D4 fitted yesterday and I am very impressed

They steer better, are quieter than the oem Wranglers on both hot melt and 3/4 stone bitumen, and have less wallow going around corners so all in all very happy.

Price was $400 each so not too bad. The main advantage of he scorpions was I could keep the wrangler spare as the tire is the same size. I was going to get the GG AT which were $275 each but since I do 80% onroad driving I didn't want to compromise cabin noise. I have become quiet fond of how quiet it is inside the the D4 cabin and with the Scorpions fitted you can hear a penny drop.

On paper the Scorpion is the same size but in reality I think they are a poofteenth larger. It may be the more aggressive tread block than the OEM.

I could easily get the Wrangler in and out of the the spare wheel well without removing the tow hitch, I can't with the Scorpion. I'd either have to remove the hitch or 'modify' the exhaust guards.

I've read that different tyres can cause issues with the TC but I imagine you wouldn't be driving too far with a dissimilar tyre anyway (just till the Scorpion is repaired or replaced), so it should be fine.

I've done 25K+ on mine and they are still looking good. The Wranglers were showing serious signs of wear by then.

I had my car at LR for a service the other week and a guy approached me about the Scorpions, as he had been getting quotes for new Wranglers......$600+ a tyre.

After our discussion, I hope he had a few "what was I thinking?" thoughts going through his head, saved himself some money and got a much better tyre to boot. :)

[101RRS]

The difference (if there is any) will not be an issue. I recently had a flat in my Wrangler 255/60R18s and my spare is a 255/55R18 Wrangler and I drove about 500km on it with no issues.

Garry