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D4 Landmark - Compomotive 18" Wheels or smaller + spacers
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 5784

United Kingdom 2016 Discovery 4 TDV6 Landmark LE Auto Waitomo GreyDiscovery 4
D4 Landmark - Compomotive 18" Wheels or smaller + spacers

I'm delighted with my Landmark, but in rural Hampshire where the potholes grow every day, I find the ride unacceptably harsh. It's currently on 20" wheels shod with Pirelli Zeros

It has been suggested that the ride could be improved by decreasing tyre pressures all round by 2 psi. -That certainly improves things, but nowhere as much as I would like.

Question by how much can I reduce the recommended tyre pressures without compromising Safety and/or Tyre life ?

Second question what are the smallest wheels I can fit in place of the 20" ones.

Everyone agrees 19" are OK, and it's suggested if one wants to go smaller the choice is either the 18" Compomotive PD1881, or an ordinary JLR 18" wheel & spacers.

In which case can anyone confirm the size of spacers needed. I'd like to fit 285/60/18 General Grabber AT3s which AJS have in stock at £155.15 but understand that this wheel/tyre combination will probably not fit in the spare wheel aperture. If this is the case I will probably go for the same wheels with a slightly lower aspect ratio tyre for the spare only, does anyone know if 255 60 18 might fit ?

Interestingly the Land Rover tyre pressure data-plate fixed to the trailing edge of the driver's door on my Landmark appear to infer that wheels & tyres between 235/70/R17 & 255/50/R20 could be fitted:-


Click image to enlarge
 2016 Discovery 4 Landmark
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel 
 
Post #18224304th Jun 2017 2:11 pm
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 8558

England 2016 Discovery 4 3.0 SDV6 SE Tech Auto Loire BlueDiscovery 4

I've just looked at my tyre calc app, and I have 275/45x21's fitted, and one of these just squezes into the spare wheel space (its tight), and if you try and go with 285/60x18's they are bigger than my tyres by almost another 1 inch (30.7 Inches for mine, 31.5 for yours) so I would say one of these wouldnt fit.

I thought 255/50x18 was the standard tyre fitted to an 18" rim on the D3, so these would/should fit - if you didnt have the adblue tank, so not sure from that point of view

Al
 MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD

If you think you are too small to make a difference - you've never shared a bedroom with a mosquito 
 
Post #18225244th Jun 2017 6:03 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Somewhere.
Posts: 57921

United Kingdom 2011 Discovery 4 3.0 SDV6 HSE Auto Zermatt SilverDiscovery 4

255 60 18 is standard. Thumbs Up
 

11 D4 HSE - just Dee, no more Double Disco. Sad

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Post #18225444th Jun 2017 7:01 pm
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 5784

United Kingdom 2016 Discovery 4 TDV6 Landmark LE Auto Waitomo GreyDiscovery 4

Del

Quote:
255 60 18 is standard


255/50x18 ? I thought I couldn't go below 19" unless I used spacers or Compomotive PD1881s.

Confused....

NJSS
 2016 Discovery 4 Landmark
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel 
 
Post #18226014th Jun 2017 8:43 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Somewhere.
Posts: 57921

United Kingdom 2011 Discovery 4 3.0 SDV6 HSE Auto Zermatt SilverDiscovery 4

al cope wrote:
I thought 255/50x18 was the standard tyre fitted to an 18" rim on the D3


Was thinking of the that. They are the same rolling circumference as the D4 standard 255 55 19 so should be fine for D4 on Compmotives. Thumbs Up
 

11 D4 HSE - just Dee, no more Double Disco. Sad

Old Dee 🇬🇧🇫🇷🇹🇳🇪🇸🇦🇩🇧🇪🇳🇱🇱🇺🇩🇪🇮🇹🇩🇰🇸🇪🇳🇴🇫🇮🇵🇱🇸🇰🇨🇿🇱🇹🇱🇻🇧🇼
New Dee 🇬🇧🇫🇷🇧🇪🇳🇱🇩🇪🇩🇰🇸🇪🇮🇸 + 🇵🇱🇫🇮 next 
 
Post #18226034th Jun 2017 8:47 pm
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 8558

England 2016 Discovery 4 3.0 SDV6 SE Tech Auto Loire BlueDiscovery 4

soory, my mistake, its 255/60x18 as standard (on D3), then 255/55x19 (D3&D4), then 255/50x20 (D4)

Al
 MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD

If you think you are too small to make a difference - you've never shared a bedroom with a mosquito 
 
Post #18228375th Jun 2017 2:44 pm
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 5784

United Kingdom 2016 Discovery 4 TDV6 Landmark LE Auto Waitomo GreyDiscovery 4

Thanks everyone.

So far no one has commented on what spacers I would require to fit 18" wheels, other than Compomotives, to the D4.

Clearly they must be hubcentric but what thickness; and what's a 100% reliable brand please?

NJSS
 2016 Discovery 4 Landmark
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel 
 
Post #18228435th Jun 2017 3:17 pm
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swansty
 


Member Since: 21 Sep 2008
Location: Northern Ireland
Posts: 653

Northern Ireland 2010 Discovery 4 3.0 TDV6 XS Auto Zermatt SilverDiscovery 4

Is the wheel diameter limitation not due to the size of the brakes in which case spacers wont really help? the compomotive wheel is designed to clear the brakes by being wider on the inside than other 18" rims. I think although I might be totally wrong...

Spacers tend to be used to allow fitting of different offset wheels to clear the suspension struts.

The 17" wheels mentioned on the tyre pressure label would only apply to the 2.7L engine versions which IIRC had the smaller D3 brakes fitted.
  
Post #18228465th Jun 2017 3:26 pm
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SafariDave
 


Member Since: 19 Nov 2011
Location: NYC & LA
Posts: 498

United States 2005 Discovery 3 4.4 V8 SE Auto Bonatti GreyDiscovery 3

Do the diesels D4's have a larger caliper than the US V8 4.4? Is it the same calipers as the US V8 5.0 or V6 SC?
Dave
 LR3 2005 V8 SE Bonatti Grey "The Rhino"
De-tangoed Headlights, LR4 14-16 Style Grille, LR4 19" Wheels/ Bridgestone Alenza 
 
Post #18228575th Jun 2017 3:58 pm
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lespes
 


Member Since: 17 Sep 2009
Location: Sitting Down
Posts: 1919

Guernsey 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

Might be worth a conversation with Devon 4x4, they do a lot of spacer options so might know more
 D4 HSE MY12 Marmais Teal: Gone. Missed a lot!
Freelander 2 SD HSE MY11 Silver:Thankfully gone.
D4 HSE MY11 Silver: Gone missed !
Range Rover Sport MY06 HSE Buck Blue: Gone missed!
Discovery D2 TD5 Facelift MY Red Gone Missed!
Discovery D2 TD5 Cobalt Blue: Gone Missed!
Discovery D1 Auto Oxford Blue Not missed at all!
Discovery D1 Avalon Blue First LR! missed!

Now driving a rather nice Black Van (joined Club Landmark) 
 
Post #18234106th Jun 2017 5:45 pm
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ijay
 


Member Since: 07 Nov 2016
Location: Essex
Posts: 11

England 2005 Discovery 3 TDV6 HSE Manual Zambezi SilverDiscovery 3

Spacers are not needed for any of the tyre/wheel sizes listed on the label, they will all fit (using LR wheels) as long as the front brakes are not the V8 upgrade ones, in which case the smallest rim you can fit is the 18". Once you start going up in width it gets a bit more complicated, but 275 will definitely fit without modifications. Google 'tyre size calculator' and find out what your size will be equivalent to. As long as you stick to <3% difference in overall size you should be OK. Also remember that your speedo will be off too.
  
Post #18234806th Jun 2017 8:04 pm
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 8558

England 2016 Discovery 4 3.0 SDV6 SE Tech Auto Loire BlueDiscovery 4

@ ijay - he's got a D4, 19's are the smallest genuine LR rim you can fit ASAIK

Al
 MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD

If you think you are too small to make a difference - you've never shared a bedroom with a mosquito 
 
Post #18235607th Jun 2017 7:14 am
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ijay
 


Member Since: 07 Nov 2016
Location: Essex
Posts: 11

England 2005 Discovery 3 TDV6 HSE Manual Zambezi SilverDiscovery 3

Seems a bit odd that LR have the standard tyre size sticker pictured on the car if sizes won't fit. I know it's right for D3 and presume D4 is the same.
  
Post #18239677th Jun 2017 11:08 pm
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marsie
 


Member Since: 28 Feb 2010
Location: Sheffieldish
Posts: 1334

England 2012 Discovery 4 3.0 SDV6 HSE Auto Indus SilverDiscovery 4

I have just removed the 20" wheels from my D4 and fitted 18" compomotives for the very same reason. The roads around here are horrendous and as good as the 20s looked they were no match for our local roads

The ride on the 18s is a revelation but they have only been on a couple of hours Mr. Green

The sticker in the door probably covers all D4 models including the commercial like my neighbour has. That has a 2.7 engine, smaller brakes and 18" wheels as standard so maybe they were even available with 17"?
next door neighbour is similar to this one
https://www.gumtree.com/p/vans/no-vat-land...1190085882

My car with the old wheels ( which are now for sale on this forum Thumbs Up )

Click image to enlarge


The new wheels

Click image to enlarge

Paul
 Previous Discos
1989 200tdi 3dr
1994 300tdi ES
1995 3.9 ES (x3)
2000 4.0 adventurer
2001 4.0 ES
2005 D3 HSE (zambesi silver)
2007 D3 SE (Lugano teal)
2011 D4 XS (Baltic Blue)
2008 D3 ES PREMIUM (buckingham blue)
2009 D4 XS (Nara bronze)
2006 D3 Metropolis (Java Black)
*current*2012 D4 HSE (indus silver) 
 
Post #18239717th Jun 2017 11:26 pm
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LT
 


Member Since: 31 Dec 2005
Location: South West
Posts: 7799

2016 Discovery 4 3.0 TDV6 Landmark LE Auto Santorini BlackDiscovery 4

Compomotives and Pirelli ATR's. Vast improvement all round. Thumbs Up



 2006 D3 HSE (Original & still the best)-GONE
2010 D4 HSE (A bit bling)-GONE
2014 D4 HSE (Almost too bling)-GONE
2015 D4 HSE (A heated what?)-GONE
2016 D4 Landmark (Written Off)-GONE
2016 D4 Landmark (Surely the last!) 18" Compomotive PD1881 rims. 
 
Post #18242498th Jun 2017 7:21 pm
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