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Different size spare
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sasdiscos
 


Member Since: 22 Feb 2013
Location: Northants
Posts: 490

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Bali BlueDiscovery 4
Different size spare

I’m currently on the look out for a full size spare as my 275 45 20 tyres now don’t match the spare.

In the mean time, if the worse happens, can I use the spare with a small discrepancy? Ie for short distances. I know all about gearbox and diff problems but would it get me off the motorway for instance.

Steve
 You remind me of a younger me, not much younger mind...perhaps even a little older!  
Post #202320729th Jan 2019 8:34 am
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 2022

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

What size is the spare?
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #202320929th Jan 2019 8:50 am
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 9171

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

in short - yes you can. A long time ago I had 265/50x20's on and had a puncuture - had to use my 255/55x19 to get home (OK only about 10 miles). Didnt seem to give me any problems as it was "close enough" to the size of my 20's

Al
 MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
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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 
 
Post #202321129th Jan 2019 8:51 am
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J@mes
 


Member Since: 10 Nov 2008
Location: Bomber County
Posts: 4238

England 2014 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4

I've got 275 45 20 on mine with a 255 55 19 spare, the size difference is negligible in reality.

1%, or 6 revolutions per mile. Can't see why the diff wouldn't cope with that.
 2014 D4 XS
2005 D3 SE - Gone 
 
Post #202321729th Jan 2019 9:07 am
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J@mes
 


Member Since: 10 Nov 2008
Location: Bomber County
Posts: 4238

England 2014 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4

 2014 D4 XS
2005 D3 SE - Gone 
 
Post #202321829th Jan 2019 9:07 am
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DG
Site Moderator 


Member Since: 12 Dec 2005
Location: The Gaff
Posts: 46614

United Kingdom 
Re: Different size spare

sasdiscos wrote:

In the mean time, if the worse happens, can I use the spare with a small discrepancy? Ie for short distances. I know all about gearbox and diff problems but would it get me off the motorway for instance.

Steve


I've driven on a space saver, a 19" and two 18"s all at the same time before now ...as long as your are sensible it won't cause any issues Thumbs Up
  
Post #202322029th Jan 2019 9:10 am
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sasdiscos
 


Member Since: 22 Feb 2013
Location: Northants
Posts: 490

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Bali BlueDiscovery 4

I have the standard space saver. That would equate to the 255 50 that were fitted. Ok, that’s great. It will give me time to save up some cash. I’ll check the space saver size tho just in case it’s miles out. I’ll check on the tyre size calculator.

Many thanks guys.

Steve
 You remind me of a younger me, not much younger mind...perhaps even a little older!  
Post #202328329th Jan 2019 1:28 pm
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sasdiscos
 


Member Since: 22 Feb 2013
Location: Northants
Posts: 490

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Bali BlueDiscovery 4

So, if the 255/50/20 are replaced with 275/45/20, the spare space save on the originals would be 175/80/19 i believe. I need to check mine but assume its right.

So the space saver is the same as the 255.

In this case the difference is 1%.


Click image to enlarge



I assume then that this will be ok to use as a spare as the diffs would not wind up on such a small discrepancy, I suppose in theory a slightly flat tyre could cause the same effect.

Steve
 You remind me of a younger me, not much younger mind...perhaps even a little older!  
Post #202335729th Jan 2019 6:08 pm
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DG
Site Moderator 


Member Since: 12 Dec 2005
Location: The Gaff
Posts: 46614

United Kingdom 

Diff wind up is not an issue on the Disco as far as I recall Thumbs Up
  
Post #202335929th Jan 2019 6:22 pm
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