Cooper S/TMAXX on Compomotive Rims

[Loderunner]

Range Rover Sport L320 owner here.

Just ordered a set of Compomotive rims for it that I am importing direct from the UK. Now looking at what tyres to put on the rims and looking at the Cooper S/TMAXX. The sizes I am looking at are either the 265/60R18 or 285/60R18. I would prefer to go with the 285s but unsure if they will fit OK without rubbing. The outside diameter of the 265 is 781mm vs OD of the 285 is 804mm. What's the max OD I could go without rubbing/mods being required?

Thanks.

[scarry]

Go the 265/60/18,less problems.

And maybe not the coopers.....

[Loderunner]

Yeah, I know there would be less problems witht the 265s but I've already got 285s on at the moment and I like the width - looks good on the RRS.

What's wrong with the Coopers? I've only heard good things.

Just checked legality for mods with Vicroads and apparently I can increase wheel diameter by a max 50mm. Does anybody know the stock wheel diameter? I'd measure the diameter of my current wheels but they're 285/35/22 on 22inch riims and I don't think they are stock.

[gruntfuttock]

I run coopers and only ever had a flat due to a 6inch tech screw. Never had a problem either. Now unless your running solid rubber that will go through any tyre.

[Graeme]

Std nominal dia on L320 is 29" although lots of owners fit D3/4 30" or thereabouts.

[DiscoClax]

The 285/35R22s are close to 30" diameter. Of course you could always change your tyre placard for one off a D3/4 that shows the bigger stockies... and the 285/60R18s are legal at 31.5". It's basically the same underpinnings.

[DiscoClax]

Or a later model RR/RRS that run 31" tyres stock...

[Loderunner]

Or a later model RR/RRS that run 31" tyres stock...

That means I'd have to buy a new car. Not an option, not for a few years anyway.

[DiscoClax]

That means I'd have to buy a new car. Not an option, not for a few years anyway.Sorry... I meant the tyre placard off one of those, not the vehicle.

The L322 placard shows 30" tyre sizes and says "Range Rover" on it. Just saying...

[Loderunner]

Sorry... I meant the tyre placard off one of those, not the vehicle.

The L322 placard shows 30" tyre sizes and says "Range Rover" on it. Just saying...

:Rolling:Ha! I thought you were hinting I should get a new car with bigger stock wheels.

[DiscoClax]

How'd that be for a first world solution?! LoL [emoji16]

[DiscoClax]

I've got an L320 TDV8 being shipped over from Perth currently. It's got the aforementioned 285/22s on it and will get LT285/60R18 BFGs on Compos pretty much as soon as it lands. The head said just put on 265/65s but the heart said "Yeah, but have you seen how good they look with these fat tyres?" And it already had the 285s so I struggled with the idea of going narrower. Plus I like wider tyres on narrower rims for offroading (rim damage, bead packing, etc) and they were the same price. At the end of the day this isn't a fully rational purchase anyway...

[Loderunner]

I've got an L320 TDV8 being shipped over from Perth currently. It's got the aforementioned 285/22s on it and will get LT285/60R18 BFGs on Compos pretty much as soon as it lands. The head said just put on 265/65s but the heart said "Yeah, but have you seen how good they look with these fat tyres?" And it already had the 285s so I struggled with the idea of going narrower. Plus I like wider tyres on narrower rims for offroading (rim damage, bead packing, etc) and they were the same price. At the end of the day this isn't a fully rational purchase anyway...

Yeah, that's exactly my dilemma. The BFG 285/60R18 have an Diameter of 799mm, it would be interesting to hear how those work on on the RRS as far as fit and rubbing is concerned.

[DiscoClax]

Yeah, that's exactly my dilemma. The BFG 285/60R18 have an Diameter of 799mm, it would be interesting to hear how those work on on the RRS as far as fit and rubbing is concerned.

Based on the experience of many others here (and other forums) it seems there may be some slight rubbing on plastics under heavy articulation and/or tight turning. There is a metal seam at the back that may need to be folded over (under the splash-liner). The vehicle should still be OK to limp home if you lose the air and it's on the bump stops (just). ~Ø31.5" / 800mm is considered the limit to get away with that and it should still go into the spare cavity (albeit deflated and with a decent shove). I'm a big fan of lots of sidewall so I was always going to lean towards the largest tyre on the smallest rim. So I'm starting 'safe' with the 285/60. The extra width of the tyre means the sidewalls are inclined outwards and that aids rim protection and also plushness of ride, at the detriment to sharpness of handling.

Gordon has a tyre fitment guide under the Compomotive section of his GoE website. And he runs 275/65s (~Ø32.1" / 815mm) on his (with a bit of light metal-work and plastic trimming). For 285/60 fitment, refer - http://docs.wixstatic.com/ugd/a34e48_412339061ce4481bac513e52bcd03ff4.pdf

For the larger 275/65 size, refer - http://docs.wixstatic.com/ugd/a34e48_e081caf95b8eb0f83b16c24f5dd70cfb.pdf

Disclaimer: Note this is all based on others reported experience, and there is some variation between tyres and vehicle build. So please do your own due diligence and apply your own acceptance criteria as to what level of compromise you accept.

[Loderunner]

As an after thought, does anyone know if snow chains will fit on 265/60R18s on a RRS?

[DiscoClax]

As an after thought, does anyone know if snow chains will fit on 265/60R18s on a RRS?

Well.... 285/60s fit on Compomotive rims. They are about 1/2" larger profile (from sidewall out and also dia) than the 265/60s. So, if you use a 1/2" chain (15mm or less, low-profile) and you keep the speed down, and don't heavily articulate and limit steering lock, and you are on Compo rims (offset) you might be OK. No idea, but how's that for logic?

[Loderunner]

how's that for logic?

The logic is sound and aligns with my way of thinking. That said, after reading some of the posts re. snow chains in the D3/D4 section you would believe that you would never get snow chains on uness you are running 20" or less OEM rims with stock tyres.

As much as I would love 285s I'm going to have to go with the 265 ST/MAXXs. I don't think there will be a hope in hell of getting snow chains on 285s.

[hibees1972]

Based on the experience of many others here (and other forums) it seems there may be some slight rubbing on plastics under heavy articulation and/or tight turning. There is a metal seam at the back that may need to be folded over (under the splash-liner). The vehicle should still be OK to limp home if you lose the air and it's on the bump stops (just). ~Ø31.5" / 800mm is considered the limit to get away with that and it should still go into the spare cavity (albeit deflated and with a decent shove). I'm a big fan of lots of sidewall so I was always going to lean towards the largest tyre on the smallest rim. So I'm starting 'safe' with the 285/60. The extra width of the tyre means the sidewalls are inclined outwards and that aids rim protection and also plushness of ride, at the detriment to sharpness of handling.

Gordon has a tyre fitment guide under the Compomotive section of his GoE website. And he runs 275/65s (~Ø32.1" / 815mm) on his (with a bit of light metal-work and plastic trimming). For 285/60 fitment, refer - http://docs.wixstatic.com/ugd/a34e48_412339061ce4481bac513e52bcd03ff4.pdf

For the larger 275/65 size, refer - http://docs.wixstatic.com/ugd/a34e48_e081caf95b8eb0f83b16c24f5dd70cfb.pdf

Disclaimer: Note this is all based on others reported experience, and there is some variation between tyres and vehicle build. So please do your own due diligence and apply your own acceptance criteria as to what level of compromise you accept.

I run 275/65/18 STT Pro with compomotive rims. Looks great and had to do all the trimming etc that Gordon advises. Still slight rubbing on full lock.

[Loderunner]

I run 275/65/18 STT Pro with compomotive rims. Looks great and had to do all the trimming etc that Gordon advises. Still slight rubbing on full lock.

They're 820mm diameter. I want! I actually didn't think there would be any chance of those fitting. No chance of getting snow chains on them though.

[hibees1972]

[QUOTE=Loderunner;2793480]They're 820mm diameter. I want! I actually didn't think there would be any chance of those fitting. No chance of getting snow chains on them though.[/QUOTE

You won’t need them 😂😂

[Loderunner]

You won’t need them 😂😂

Now if only I could make the park Rangers believe that... [thumbsupbig]

[Loderunner]

My Compomotives arrived today. Getting ST/MAXXs fitted this afternoon. Can't wait. [biggrin]

Finally getting rid of the Toorak Tractor wheels.

[Armitage_Shanks]

My Compomotives arrived today. Getting ST/MAXXs fitted this afternoon. Can't wait. [biggrin]

Finally getting rid of the Toorak Tractor wheels.
Pics?

[DiscoClax]

...or it never happened [emoji14]

[Loderunner]

...or it never happened [emoji14]


Pics?

Some pics of the Compomotives running the ST/Maxx's. Needs a bit of a clean...

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