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Using GAP or AP200 tool when increasing tyre size?
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Garwood56
 


Member Since: 24 Jun 2021
Location: West Sussex
Posts: 436

United Kingdom 2005 Discovery 3 TDV6 SE Auto Cairns BlueDiscovery 3
Using GAP or AP200 tool when increasing tyre size?

Running standard 255 60 18 Goodyear Wranglers on my 2005 Disco 3. However have been offered a very good deal on almost new Michelin Latitude tyres 255 70 18. So question because I’m going from 60 to 70 should I use my AP200 to enter new tyre size and has anyone done this successfully.
  
Post #233921612th Jun 2023 4:47 pm
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Shamrock
 


Member Since: 16 Jun 2022
Location: South Kerry
Posts: 114

Ireland 2011 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4

In my humble opinion, 255/70R18 are far too large ! It's about 1" increasing the radius and +6.7% on the circumference (3% max. allowed).
But, in order to answer the question, you should modify some values in CCF (width, ratio, rim size, tyre circumference).
  
Post #234222915th Jul 2023 8:31 am
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Garwood56
 


Member Since: 24 Jun 2021
Location: West Sussex
Posts: 436

United Kingdom 2005 Discovery 3 TDV6 SE Auto Cairns BlueDiscovery 3

Agree so ended up with Cooper Discoverer AT3’s 265/65/18. Perfect fit, no rubbing. Haven’t made any alterations with AP200 yet. Minimum speed difference compared to original 255/60/18. Very happy with them
  
Post #234229516th Jul 2023 2:06 am
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Shamrock
 


Member Since: 16 Jun 2022
Location: South Kerry
Posts: 114

Ireland 2011 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4

265/65R18 seems to me still pretty too large (more than 5% above approved sizes).
Did you check space in fender when on bump stops, even steering wheels ? They're more than 19mm bigger on radius... But apologise if some difference between D3 and D4 about this point, I have only experience of my car.
  
Post #234231216th Jul 2023 8:40 am
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Moo
D3 Decade 


Member Since: 13 Aug 2010
Location: UK
Posts: 14345

Ukraine 2005 Discovery 3 TDV6 S Manual Zambezi SilverDiscovery 3

I've often wondered what insures make of out of spec tyres in any claims? Anyone have any experience?
 New Defender L663 110 SE (known as Noddy!)

Sold Volvo XC90 R-Design (known as Basil)

Sold - D4 HSE (Known as Gerty)

No longer the Old Buses original owner Sad
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control 
 
Post #234231916th Jul 2023 9:09 am
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Shamrock
 


Member Since: 16 Jun 2022
Location: South Kerry
Posts: 114

Ireland 2011 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4

Hi Moo,
You're right. I have no real experience but I just guess that they shouldn't care except if this point is in any way the cause of an accident and/or if there are personal injuries.
By example, if a tyre burst because rubbing on a screw head, I think that would become a serious problem ! By my side, I prefer to don't take too much useless risk...
  
Post #234241517th Jul 2023 7:44 am
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2802

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

Moo wrote:
I've often wondered what insures make of out of spec tyres in any claims? Anyone have any experience?


I had a non-fault accident when stationary at a junction in my D3 back in 2015.
The supposedly like for like courtesy car I was offered was a LWB Shogun.
I rejected it on two counts, firstly that it didn't have a Towbar, and secondly that it wasn't fitted with AT tyres like my D3.
Both were needed to Tow my boat/trailer across the field where it was stored if wet.

My insurer would not supply a vehicle with either as they were not fitted as standard to the D3.
In the end I had a Golf for a few weeks and enjoyed driving it whilst the boat had a rest.

I had a lengthy conversation with an actually quite helpful customer service guy who was happy to make a note on my policy that the D3 had a LR Towbar fitted, and was a little surprised a colleague had made such a fuss about it.

However, regarding the tyres, they were initially seen as a modification that hadn't been notified, and I had to provide details of what was fitted.
They were happy in the end that the GG AT's fitted were an acceptable replacement fitment in the correct size and spec for the D3, but I've always been convinced it may have caused a delay had I been claiming on my own policy.
I do know that a different non-standard tyre size would have been an issue that they would have expected to have been declared as a modification.
And as we know, insurance companies like to know about mods before you need to make a claim, as they'll use any excuse not to pay out.
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #234241917th Jul 2023 8:08 am
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10773

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Waitomo GreyDiscovery 4

Simon - I have a VERY comprehensive of all mods to each car which I submit to insurers at renewal.

The V8 MG one runs to 5 A4 pages. Insurers never say "We don't want that much detail", but I doubt that they read it all !

NJSS
  
Post #234242617th Jul 2023 9:18 am
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Nasher
 


Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2802

England 2016 Discovery 4 3.0 TDV6 HSE Lux Auto Loire BlueDiscovery 4

Nigel hi.

Yep, better to tell them too much and record you've told them.
 Heaven doesn't want me, and hell is afraid I'll take over.  
Post #234243117th Jul 2023 9:35 am
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Moo
D3 Decade 


Member Since: 13 Aug 2010
Location: UK
Posts: 14345

Ukraine 2005 Discovery 3 TDV6 S Manual Zambezi SilverDiscovery 3

I do the same. I'm a bit OCD on insurance, whatever its for. I had a colleague at a previous company who had a house fire that wasn't paid out on the contents because he was under insured. Confused

Anyway, I see many LR of all types on a multitude of different wheel and tyre combinations so just curious.
 New Defender L663 110 SE (known as Noddy!)

Sold Volvo XC90 R-Design (known as Basil)

Sold - D4 HSE (Known as Gerty)

No longer the Old Buses original owner Sad
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control 
 
Post #234245517th Jul 2023 12:37 pm
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Shamrock
 


Member Since: 16 Jun 2022
Location: South Kerry
Posts: 114

Ireland 2011 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4

I recall an example... In the far past, a work friend had a terrible accident on a highway with an Alfa Romeo GTV when a tyre bursted. It appears that a mechanics who previously changed the tyres placed chambers in Tubeless type tyres, arguing he couldn't make them airtight on the rims...
It has been a long, complex and harrowing trial and I don't remember how that ended.
  
Post #234258118th Jul 2023 10:35 am
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