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One irreparable tyre - do I need to replace all 4?
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Rich_S
 


Member Since: 12 Mar 2013
Location: London
Posts: 120

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4
One irreparable tyre - do I need to replace all 4?

Rear tyre suffered a puncture yesterday. Unfortunately it's right at the edge.

Quick question to the learned panel:

The tyres currently on the car are
PIRELLI 255/55 R19 SCP VERDE 111V

with approx 20K miles on them. Can I replace just the two rear tyres with new Pirelli Verde, or is that a bad idea? If I should replace all four tyres I have been looking at the Michelin crossclimate for no other reason than they might be a better all-around tyre? Any views on these currently? Most of my driving is on road - with about 5% off-road.

Any thoughts much appreciated.

R.
  
Post #210273930th Nov 2019 3:46 pm
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adam
 


Member Since: 20 Sep 2005
Location: Home and Happy
Posts: 6917

United Kingdom 

Go to a decent independent tyre dealer - preferably one that also works on truck tyres - and ask for a quote for a vulcanised repair if the tyre still has enough tread. Shouldn’t pay more than £30 - £35 and takes about 3 days.

Before all the naysayers pipe up about safety, it’s 100% safe if you go on the recommendations of a reputable fitter.
 Now Golf GTI PP, 7 speed DSG.
Ex D3 and D4 
 
Post #210275730th Nov 2019 4:47 pm
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riverblanche
 


Member Since: 31 Aug 2010
Location: retford'ish
Posts: 2206

England 2008 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Hi,
whats on your spare wheel Question

have just had a puncture inside edge so replaced it (forgot about "Major repairs") spare was also brand new, so now has 2 new tyres on the rear (one bought one was spare) and spare now has 5mm, as do the fronts.

All are same Pirelli's

Would try to match thread depths on same axle but would not replace all 4 Shocked

so also what are threads depths Question 20k miles depends how you drive ours has 30k and still 5mm.

Thumbs Up
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Post #210277930th Nov 2019 5:43 pm
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Rich_S
 


Member Since: 12 Mar 2013
Location: London
Posts: 120

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

adam wrote:
Go to a decent independent tyre dealer - preferably one that also works on truck tyres - and ask for a quote for a vulcanised repair if the tyre still has enough tread. Shouldn’t pay more than £30 - £35 and takes about 3 days.

Before all the naysayers pipe up about safety, it’s 100% safe if you go on the recommendations of a reputable fitter.


yep, already tried that earlier today, but it's right on the "corner" so there is actually a slight bulge and the guys said that although it was repaired it probably wasn't a good idea to use it except as a spare.
  
Post #210280830th Nov 2019 7:29 pm
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Rich_S
 


Member Since: 12 Mar 2013
Location: London
Posts: 120

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

riverblanche wrote:
Hi,
whats on your spare wheel Question



sadly it's not a Pirelli, but the original from new (can't remember off the top of my head what it is)

I currently have 5mm of tread on the Pirellis so perhaps the compromise it to get two new rear tyres so that they at least match (the other rear has also had a puncture repair last year) each other. They just won't match the tread on the fronts. If I were to do that, would it be a bad idea to change to a different tyre set altogether for the rears? Just asking!

thanks.
  
Post #210281230th Nov 2019 7:42 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8043

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

20k miles = how much tread depth left? - mileage is irrelevant it what tread depth is left, I would be looking at a new pair fitted to the front and keep the “good” as a spare.
I’ve got some “spare” tyres with about 4mm left on them £30 each if that’s any help.
Edit: I must learn to type faster.
So the spare tyre is 6 years old?- It’s time it was used, buy another to match it Thumbs Up
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #210281530th Nov 2019 7:49 pm
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leeds
 


Member Since: 30 Aug 2010
Location: West Yorkshire
Posts: 4311

United Kingdom 2016 Discovery 4 3.0 TDV6 Landmark LE Auto Yulong WhiteDiscovery 4

Whilst tread depth and wear is important when deciding when to replace tyres there is another very important factor the AGE of the tyre.

As tyres get older the rubber degrades for many different reasons from oxidisation, thermal, salt, UV etc.

As tyres age they start showing signs of ageing be it cracking between tread blocks or circumferential cracking on the side walls.

As tyres get old, rubber hardens and they are more susceptible to punctures.

Week and year of manufacture of tyres are marked on the sidewalls.

Once tyres become 6-7 years old they are getting to the end of their useable safe working life and retirement should be considered.
  
Post #210285030th Nov 2019 10:59 pm
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Rich_S
 


Member Since: 12 Mar 2013
Location: London
Posts: 120

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

so what I am hearing here is that the spare is now getting to the end of its useful life, so....

I should get two new tyres

Fit both to the front,

move the front to the back

take the remaining usable tyre that is on the back (right) and use that as my "new" spare....as it's younger....

does that sound about right! Shocked
  
Post #21028541st Dec 2019 12:00 am
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garrycol
 


Member Since: 06 Dec 2010
Location: Canberra
Posts: 1114

Australia 

Just replace the damaged tyre with the same make and size. If the new one is the same as the old tyre the difference in tread thickness will not make a scrape of difference. Not enough to cause any issues witn the car's systems or drivetrain.

Try not to over think these things.

Garry
  
Post #21028591st Dec 2019 12:58 am
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
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Ukraine 

+1. ^^^ Thumbs Up
   
Post #21028601st Dec 2019 1:03 am
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pagoda
 


Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923

Canada 2016 LR4 3.0 SDV6 Landmark LE Auto Yulong WhiteLR4

+1

Don't repair if the advice is not to. Take a look at the others. Maybe a rotation will produce a tyre that is worse off than the others. That way at least you can replace two at once. If you replace one you'll be forever chasing your tail.
 PAGODA  
Post #21028611st Dec 2019 1:18 am
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LT
 


Member Since: 31 Dec 2005
Location: South West
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United Kingdom 2016 Discovery 4 3.0 TDV6 Landmark LE Auto Santorini BlackDiscovery 4

Just remember if you’re only replacing one or two, always fit new tyres on the rear axle. Regardless of what drive system the vehicle is. 👍
 2006 D3 HSE (Original & still the best)-GONE
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Post #21028621st Dec 2019 1:23 am
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PCT3
 


Member Since: 13 May 2017
Location: Kent
Posts: 144

England 2007 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

It’s the rolling circumference on these type of 4x4s that should be the deciding factor, front and rear diffs are simple open diffs but the centre ‘diff’ is no longer a diff it’s a clutch which looks at the different axle speeds.
Prior to changing all 4 tyres (big miss match of manufacture and wear) certain high speed bends could cause the centre diff to start engaging as it saw different axle speeds.
BMW I believe allow 10% differential as the max in tyre wear, as it can damage the Transfer box, Land Rover use the same styner transfer box although LRs have the low ratio added
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Post #21028861st Dec 2019 8:28 am
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
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Ukraine 

My D3 lasted 166k miles on all sorts of mismatched tread depths, though usually the same tyre type, and it never had any issues with diff wear or centre diff thingie. In addition to the abuse she got on assorted off-roading jollies throughout her life. There are bigger and more expensive things to worry about. Whistle Whistle
   
Post #21028901st Dec 2019 8:38 am
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KrisC
 


Member Since: 19 Jan 2018
Location: Ayrshire
Posts: 85

United Kingdom 2011 Discovery 4 3.0 SDV6 HSE Auto Galway GreenDiscovery 4

LT wrote:
Just remember if you’re only replacing one or two, always fit new tyres on the rear axle. Regardless of what drive system the vehicle is. 👍


+1 Thumbs Up
  
Post #21028931st Dec 2019 8:59 am
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