Speed Index H tyres OK instead of Speed Index V?

54and56

Hi all,

I purchased a used VW 2013 Touareg which came with 275/45/20 110V XL's but I just noticed that the replacement tyres I had fitted are 275/45/20 110H XL's.

Having checked the Speed Index it seems H permits speed up to 210km and V is up to 240km. Given I never go over 150km even on long motorway spins I'm assuming fitting H rated tyres instead of V rated is fine?

biko

Yeah, it's fine.

ironclaw

Y drive so slow?

:pac:

Joking

serious3

Tyres should be rated higher than the maximum design speed of the vehicle.

enumbers

serious3 wrote: »

Tyres should be rated higher than the maximum design speed of the vehicle.

care to elaborate on this statement. seems like the poster would be well within the speed limits of his chosen tyre

CiniO

serious3 wrote: »

Tyres should be rated higher than the maximum design speed of the vehicle.

While that rule applies in many countries on the Continent, it doesn't apply in Ireland.
Anything with speed rating above 120km/h will do in Ireland.


Also considering wording from Vienna Convention 1968 which generally rules international traffic in Europe and beyond, every car should be technically compliant with requirements in country of registration, so Irish registered car capable of doing 200km/h will be grand on German autobahn on tyres with speed rating N of 140km/h as such tyres would be legal in Ireland.
However worth remembering, that you can't exceed that 140km/h while on such tyres.

54and56

CiniO wrote: »

However worth remembering, that you can't exceed that 140km/h while on such tyres.

Are you saying that H rated tyres shouldn't be driven at speeds in excess of 140km P/H or are you just referring to the national speed limit and saying that regardless of the fact that H rated tyres technically permit speeds up to 210km you can't (legally) drive at speeds above 140km so whether the tyre is rated H or V doesn't really matter?

serious3

CiniO wrote: »

While that rule applies in many countries on the Continent, it doesn't apply in Ireland.
Anything with speed rating above 120km/h will do in Ireland.


Also considering wording from Vienna Convention 1968 which generally rules international traffic in Europe and beyond, every car should be technically compliant with requirements in country of registration, so Irish registered car capable of doing 200km/h will be grand on German autobahn on tyres with speed rating N of 140km/h as such tyres would be legal in Ireland.
However worth remembering, that you can't exceed that 140km/h while on such tyres.

What a surprise it's not applicable here... ffs.... why fit 140kmh tyres to a car that'll do 200kmh? tyres are rated for certain speeds for a reason.

serious3

enumbers wrote: »

care to elaborate on this statement. seems like the poster would be well within the speed limits of his chosen tyre

They may well be ok but it's best practice to fit the correct speed rated or above that's specified for your vehicle. God forbid the wrong speed rated tyres are fitted and your involved in an accident, insurance companies will and do check everything and will use anything t get out of paying a claim. Them 4 bits of rubber is all that keeps you and your family safe

enumbers

serious3 wrote: »

They may well be ok but it's best practice to fit the correct speed rated or above that's specified for your vehicle. God forbid the wrong speed rated tyres are fitted and your involved in an accident, insurance companies will and do check everything and will use anything t get out of paying a claim. Them 4 bits of rubber is all that keeps you and your family safe

I presume you are trolling, the slight reduction in speed rating will have no affect on the inherent safety of the tyre. His new rating is still well within the speeds he intends to reach where do you purpose that the ratings will present an issue. I would be much more concerned with the quality of the tyre rather than a speed rating which is well beyond what the vehicle will see

pa990

My tyres are rated higher than my car is capable of doing, but doing 220+ for more than 10min makes me wary.

They only test the tyres for a certain speed for 10min at a time afaik.

Don't want to test faith anymore than I do.

(Que, widespread condemnation)

.... btw.. I only do it to clear out the dpf

CiniO

Je_suis_Jean wrote: »

Are you saying that H rated tyres shouldn't be driven at speeds in excess of 140km P/H or are you just referring to the national speed limit and saying that regardless of the fact that H rated tyres technically permit speeds up to 210km you can't (legally) drive at speeds above 140km so whether the tyre is rated H or V doesn't really matter?

No.
I was saying about N rated tyres which is speed index to 140km/h.
It was just an example, unrelated to OP's tyre specs.
That was purely for example purposes, as I don't thing it would be possible to get N rated tyres nowadays in any popular sizes.

54and56

serious3 wrote: »

God forbid the wrong speed rated tyres are fitted and your involved in an accident, insurance companies will and do check everything and will use anything t get out of paying a claim.

I assume you are either taking the pi$$ or just ill informed. Yes insurance companies will renege on a policy if you have defrauded them somehow e.g. not declaring a modification to the car but replacing V rated tyres which facilitate speed up to 240km PH with H rated tyres which permit speed up to 210km PH would only be an issue if I was doing in excess of 210km AND that level of speed somehow didn't contribute to the damage I was claiming for.

If I'm ever doing 210km PH and there's an accident the H or V rating of the tyre will be the least of my problems!!

As I stated in my OP I never ever speed above 150km as I just don't enjoy travelling faster than that so if something goes pear shaped and the car has tyres rated up to 210km PH I don't think the H rating of the car will be something the insurance company will use to renege on their obligation.

serious3

Je_suis_Jean wrote: »

I assume you are either taking the pi$$ or just ill informed. Yes insurance companies will renege on a policy if you have defrauded them somehow e.g. not declaring a modification to the car but replacing V rated tyres which facilitate speed up to 240km PH with H rated tyres which permit speed up to 210km PH would only be an issue if I was doing in excess of 210km AND that level of speed somehow didn't contribute to the damage I was claiming for.

If I'm ever doing 210km PH and there's an accident the H or V rating of the tyre will be the least of my problems!!

As I stated in my OP I never ever speed above 150km as I just don't enjoy travelling faster than that so if something goes pear shaped and the car has tyres rated up to 210km PH I don't think the H rating of the car will be something the insurance company will use to renege on their obligation.

I'll type this slowly so you'll understand.....
You have a car with a max design speed of 210kmh, you decide to get new tyres so to save money because it's the end of month/kids need shoes/holiday/bills etc you fit a cheaper tyre that's rated to 170kmh....... you have an accident at 100kmh.... insurance companies ask you to declare your vehicle is standard and not altered from manufacturers specifications.......this includes tyres.......

KERSPLAT!

Could you type slower, I still don't understand.

54and56

serious3 wrote: »

I'll type this slowly so you'll understand.....
You have a car with a max design speed of 210kmh, you decide to get new tyres so to save money because it's the end of month/kids need shoes/holiday/bills etc you fit a cheaper tyre that's rated to 170kmh....... you have an accident at 100kmh.... insurance companies ask you to declare your vehicle is standard and not altered from manufacturers specifications.......this includes tyres.......

I don't know what the max design speed of my car is but given your positive assertion that it's 210kmh let's assume you are correct.

This tyre speed index confirms that H rated tyres are good for 210kmh (not the 170kmh you incorrectly stated) and when I enter the year and model info of my car here it produces a range of recommended tyres which are a combination of H and V rated tyres.

FYI I did not save money or seek to save money (as you incorrectly asserted) when I purchased new tyres. I understand the difference between price and value and I value my and my families safety so I consult with my local tyre centre, seek their recommendation and go with what they recommend. They are trained specialists and members of http://www.itia.ie. I trust their advice.

They recommended 275/45/20 110H XL's and fitted them.

If I can't trust trained professionals to fit the right tyres who can I trust?

serious3

Je_suis_Jean wrote: »

I don't know what the max design speed of my car is but given your positive assertion that it's 210kmh let's assume you are correct.

This tyre speed index confirms that H rated tyres are good for 210kmh (not the 170kmh you incorrectly stated) and when I enter the year and model info of my car here it produces a range of recommended tyres which are a combination of H and V rated tyres.

FYI I did not save money or seek to save money (as you incorrectly asserted) when I purchased new tyres. I understand the difference between price and value and I value my and my families safety so I consult with my local tyre centre, seek their recommendation and go with what they recommend. They are trained specialists and members of http://www.itia.ie. I trust their advice.

They recommended 275/45/20 110H XL's and fitted them.

If I can't trust trained professionals to fit the right tyres who can I trust?

.... that comment wasn't aimed at you, it's a general comment to get my point across, my local tyre place recommended fullway tyres for my Audi TT, made by Michelin in Bridgestones factory by Pirelli blah blah blah....95e a corner... bought 4 uni royal rainsport 3 for 340e delivered so I'd take anything they say with a large pinch of salt, they'll all you what they make the most money on

mikeecho