X2 Michelin Latitude N1 295/35/R21 swap or sale

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pmg
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Post by pmg »

SAC1 wrote: Sun Jan 02, 2022 12:01 pm Porsches are designed and developed in Germany where they have a lot of deristricted autobans. Hence their preoccupation with tyres and their potential for running at 150 mph+:speeds for many kilometres at a time. Big tyre heat build up as a result.

A 35-series tyre on a 2 ton SUV has a lot of stresses on the sidewall, so the OE spec load rating is important even here in the UK.
Agreed I found it very interesting watching Harry's Garage Youtube video where he does 200 mph in his Jaguar Protect 8 with the car sending him warnings to increase pressures before he tries very high speeds

https://www.youtube.com/watch?v=w1Bfi065bAM
2019 Macan S Porsche code PKW8WKI8

Bluesnose1812
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Post by Bluesnose1812 »

pmg wrote: Sun Jan 02, 2022 12:01 pm
Bluesnose1812 wrote: Sun Jan 02, 2022 11:46 am I just find it incredible that miniscule differences in construction can affect ride, handling and invalidate the warranty. When we all know that tyre pressure is the most important factor. If porsche could charge for it they would. Next thing will be you can only use Nitrogen otherwise you invalidate the "Warranty". If they sense it at a service they will deflate, refill and there's an extra £100 thanks. Then 5 years on will insist on new boots all round as they have lasted so well. Why has common sense and technical reality gone out of the window ? Why's it all about fleecing the consumer now?
I agree that the whole N tyre approval thing is a factor a find negative about owning a Porsche. It is anti-competitive and stops progress and innovation.

There are other issues. In the UK climate ( over than those who live in the Highlands and around the Northern Pennines for whom summer and winter tyre sets are best) the best most efficient tyre for UK Use is one of the modern all seasons like Michelin Cross Climate but none have N approval
Makes it worthwhile to have a second set for regular use and keep the N rated just for visits to the dealer. That's what make the whole warranty issue Stoopid, it is easy to bypass.
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GTB
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Post by GTB »

As a Newbie to this forum been very interesting reading about all the Tyre comments and N Rating etc, summer, winter and all season tyres and when it comes to warranty issues.

As I will be keeping my new GTS for at least three years and staying in Scotland Im attracted to purchasing a winter wheel/tyre set as I think wear across both sets as well as benefits will work for me.

Now having driven Mercs for nearly 20 years and they have a MO stamp on their tyres certainly on the better specced E class models, when I first went to change one, tyre fitting company ( Not the Merc dealership) wouldnt fit a non MO tyre to my car unless I signed a disclaimer!! He showed me his online ordering/fitting system and basically the system only physically showed one approved make withich were Mitchellans for my car.

He said my choice he could fit another brand with same speed rating but I would need to sign the disclaimer which also stated my insurance may no longer be valid. On taht occassion and checking prices the local Merc Dealership were cheaper to supply and fit the MO rated tyres.

I then made a call to my insurer and asked their views, the response and I did get it in writing............... its my choice as the vehicle owner what tyres I fit!!!!!! However if the tyres/wheels/suspension/braking were seen as the reason for the accident claim and I had not MO rated tyres fitted on the car, it was very unlikely they would pay out as the Manufacturer Mercedes had specifically developed the MO tyres for that car.
So from then on I always fitted MO Tyres.

Bluenose 1812, I totally get what you are saying reading how Porsche OPC's apply tyre ratings for the warranty on the car, but doing waht you suggest would you be confident your insurare would happily pay out if the tyres etc they though were contributing to the accident?

Lots of car manufacturers doing this now with tyres, but if it wasnt for my local tyre dealer warning me about what the MO meant I wouldnt have ever known, and I dont think every tyre dealer would be so honest, many will just replace tyres on size and speed rating and ignore manufacturers specific detail

Cheers GTB
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Neil1911
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Post by Neil1911 »

Bluesnose1812 wrote: Sun Jan 02, 2022 11:46 am I just find it incredible that miniscule differences in construction can affect ride, handling and invalidate the warranty. When we all know that tyre pressure is the most important factor. If porsche could charge for it they would. Next thing will be you can only use Nitrogen otherwise you invalidate the "Warranty". If they sense it at a service they will deflate, refill and there's an extra £100 thanks. Then 5 years on will insist on new boots all round as they have lasted so well. Why has common sense and technical reality gone out of the window ? Why's it all about fleecing the consumer now?
Here, here. I'd like to see the computer printouts from the test rig used to analyse these differences and am VERY sceptical of our fellow Macaners being able to detect these differences, sorry guys! As for the "new boots" it's already set at 6 years. It's a minefield and there has to a marketing/profit motive driving it, the differences between Jaguar, Audi, Merc and Porsche models in weight and performance can't be significant enough to require a completely different tyre and I don't see Michelin complicating their production process to that extent and keeping everything the same except for two digits stamped/stuck/moulded onto the sidewall.
Yours,
Cynical Sceptic of Sheffield.
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Bluesnose1812
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Post by Bluesnose1812 »

GTB wrote: Sun Jan 02, 2022 1:01 pm
Bluenose 1812, I totally get what you are saying reading how Porsche OPC's apply tyre ratings for the warranty on the car, but doing waht you suggest would you be confident your insurare would happily pay out if the tyres etc they though were contributing to the accident?

Cheers GTB
I would be very confident that any non N rated tyre that was the correct size, speed rating and load factor, correctly inflated would not invalidate my insurance. What measurable factor could they say contributed? The diameter of the steel wire used in the ply? The coefficient of elasticity used in the compound? Every loss adjuster knows that the cause of most claims is a loose nut - behind the wheel.
Currently
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GTB
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Post by GTB »

Bluenose 1812,
As I said Im not disagreeing with your approach, the whole thing is around the small print and terms and conditions of the policy either insurance or warranty. That the user/owner shall only ever fit manufacturers approved replacement parts and for that vehicle.

Tyres I had to fit were : Michelin Primacy 3 ZP 275/35 R19 100Y XL *, MOE, runflat.

Just read Neil1911 most recent post and I agree a tyre manufacturer aint going to change production set up just for low numbers of tyres, with Scottish blood Im certainly just as sceptical over this whole issue as its not just premium car manufacturers doing this now. From my research MO Tyres will not be any diffrent ( I think) to non MO tyres. the MOE because they are runflats and should get me Max 50MPH for so many miles to a repair/replacement facility also those tyres have rim guards which I find does help prevent my better half scarping the alloys.

I did at the time check a number of insurers and they all told me the same, its just I dont ever want to be in that situation where they reject the claim on something like tyre choice, and what I can only assume would be an absolute nightmare to get them to change their minds, because that aint going to be on an ordinary every day prang where no real suspicions or investigation, I see it only in major accidents where there has been fatalities/life changing injuries and the insurer is looking for wiggle room. So paying the higher cost per tyre even though it goes against my Scottish generosity is a small price to pay.

GTB
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Jon A
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Post by Jon A »

All very confusing. My take on this is if you are only changing tyres every 18 to 24 months and they cost another £50 per wheel to meet “warranty requirements”, then no big deal in the scheme of things I think?
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Bluesnose1812
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Post by Bluesnose1812 »

I understand the desire to cover yourself against worst case scenarios. My point is that if your tyres were 100% legal then your insurers have no case. The fact that Porsche "recommend" N rated and have the option to invalidate your warranty should a part fail due to non-N rated tyres being used, in no way also invalidates your insurance. There is plenty of consumer protection law to use against such coercion.

Ask your insurance company to specify in writing whether the use of non-N all season tyres invalidates the policy.
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Bluesnose1812
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Post by Bluesnose1812 »

Jon A wrote: Sun Jan 02, 2022 3:18 pm All very confusing. My take on this is if you are only changing tyres every 18 to 24 months and they cost another £50 per wheel to meet “warranty requirements”, then no big deal in the scheme of things I think?
I agree on the cost point.

PMGs point was does fitting all season invalidate the warranty and your insurance even though they are safer than N rated summer tyres used in the winter.
Currently
S|Leather|Air Susp|Chrono |Surround Camera|BOSE|14 way | AILPG |
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Next Project GTS March 2025
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SAC1
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Post by SAC1 »

Bluesnose1812 wrote: Sun Jan 02, 2022 3:32 pm
Jon A wrote: Sun Jan 02, 2022 3:18 pm All very confusing. My take on this is if you are only changing tyres every 18 to 24 months and they cost another £50 per wheel to meet “warranty requirements”, then no big deal in the scheme of things I think?
I agree on the cost point.

PMGs point was does fitting all season invalidate the warranty and your insurance even though they are safer than N rated summer tyres used in the winter.
Porsche GB no longer supply All Season tyres as an option to brand new cars. However some tyre brands still produce N-rated All Season like Michelin. I know someone who has them fitted to his Macan and they passed the 111 warranty inspection at his local OPC.
Steve

2020 GTS in Sapphire Blue
(sold) 2017 SD in Rhodium Silver
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