 Poster: A snowHead
|
|
About to swap my wheels. Just spotted on the internet that they should now be fitted with a tyre pressure monitoring system!
|
|
|
|
|
|
Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
|
| Quote: |
Just spotted on the internet that they should now be fitted with a tyre pressure monitoring system!
|
well mine certainly aren't - and to judge from some of the posts on winter tyres they're a damned nuisance.
|
|
|
|
|
|
Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
|
|
Depends on your car - if it has a puncture detection system that uses a sensor inside the rim then yes. Otherwise no.
|
|
|
|
|
|
You need to Login to know who's really who.
You need to Login to know who's really who.
|
|
Oh, My BMW snow wheels are booked in tomorrow to have them added!!
|
|
|
|
|
|
Anyway, snowHeads is much more fun if you do.
Anyway, snowHeads is much more fun if you do.
|
|
|
|
You'll need to Register first of course.
You'll need to Register first of course.
|
| Quote: |
should now be fitted with a tyre pressure monitoring system!
|
I think that depends on the age of your vehicle ...
|
|
|
|
|
|
|
|
|
My previous car peougeot 407sw had a tyre pressure monitoring system .When the valves which monitor the pressure became very corroded I had them replaced with normal valves and got the main dealer to modify the software so no tyre warning lights came up. It has passed the mot for the last 5 years like this .
|
|
|
|
|
|
|
|
I didn't know I had one until a little light came up. It was quite correct and I did have a puncture. I now want an improved system that mends it 
|
|
|
|
|
|
You'll get to see more forums and be part of the best ski club on the net.
You'll get to see more forums and be part of the best ski club on the net.
|
| jbob wrote: |
| About to swap my wheels. Just spotted on the internet that they should now be fitted with a tyre pressure monitoring system! |
Since 1/11/14 all cars newly-registered in the EU MUST have a system which is capable of telling the driver that the pressure in a tyre has changed from the 'norm'. The idea is to maximise MPG and minimise tyre wear by ensuring pressures are correct.
Plenty of cars have had an 'indirect' ABS-based system which compares the rotation speeds of the wheels to detect a puncture (flabby tyres tend to have smaller rolling circumference than fully-inflated ones) .
If your car has an ABS-based system, I believe it should work with any wheels. I have no problems with my Seat Leon.
The new 'direct' TPMS uses a valve in each tyre to measure the internal pressure and inform the car of any increase or decrease in pressure over & above certain pre-set parameters. Some systems are more sophisticated than others.
The new system has come about because the ABS-based systems cannot tell that a run-flat tyre has been punctured. Continuing to drive at 'normal' speeds on a punctured run-flat invariably ends with a catastrophic blow-out.
If your car has the 'direct' TPMS system, all road wheels must be fitted with the TPMS valves and they must talk to the car. A "TPMS failure" warning light is an MOT failure - I imagine that means the insurers would look to use it as a way out of any claim you might make while the system was non-functioning.
Some (most, I believe) cars need to have the valves' id_codes uploaded to the car's systems so that the car knows what it's listening for. That's usually done by the dealers (for a fee, of course!) but some replacement valves can be 'cloned' - ie. they can be programmed to transmit the same id_codes as the original valves so the car is none the wiser.
Some cars (Mrs RL's Mini, for example) are allegedly 'self-learners' and should accept a signal from a new valve without prior notice of id_codes or 'cloning' being necessary.
Sadly, our Mini is either deaf or stupid - or both - and I am currently trying to resolve the issue
|
|
|
|
|
|
|
|
It does rather kill the idea of 'just get some cheap steel rims for the winter' unfortunately.
I just had winter tires switched on to my regular alloys because this put the numbers over the top for me.
|
|
|
|
|
|
snowHeads are a friendly bunch.
snowHeads are a friendly bunch.
|
| Quote: |
Continuing to drive at 'normal' speeds on a punctured run-flat invariably ends with a catastrophic blow-out.
|
 Gosh. I never knew that. More and more high tech things I don't have and don't want - runflat tyres. That you can use to go a little way, rather slowly. Progress is a wonderful thing.
|
|
|
|
|
|
And love to help out and answer questions and of course, read each other's snow reports.
And love to help out and answer questions and of course, read each other's snow reports.
|
|
@jbob, What make is the car? If it's a VAG then the TPMS is done via the abs system as Red Leon says (hi RL, I had a 370bhp Cupra!) and can be reset on the dashboard....
|
|
|
|
|
|
|
|
| KenX wrote: |
| I had a 370bhp Cupra.... |
|
|
|
|
|
|
You know it makes sense.
|
|
Technology getting in the way of benefit?
|
|
|
|
|
|
Otherwise you'll just go on seeing the one name:
Otherwise you'll just go on seeing the one name:
|
I have TPMS in my toy car (as opposed to the family daily), and it's nice to know when the tyre is a bit low.
It's not so nice that after 7 years I have to buy new valves as the batteries have died, and they're going to cost me close to £100 per wheel 
That car does barely 3000 miles per year. Anyone want to work out the MPG saving cost/benefit? I fear it's not in my favour...
|
|
|
|
|
|
Poster: A snowHead
|
| KenX wrote: |
| @jbob, What make is the car? If it's a VAG then the TPMS is done via the abs system as Red Leon says (hi RL, I had a 370bhp Cupra!) and can be reset on the dashboard.... |
My car is a 2013 Passat. I've always assumed that it was a direct system but now I'm not sure. It doesn't work when I have my winters on, but no warning light, I just tell it I have winters on. It's clever, and I like it a lot, it can figure out itself when I change the wheels for one corner to another.
|
|
|
|
|
|
Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
|
An update on my TPMS travails:
According to all the literature and the 'experts' I've spoken to, Mini stopped using TPMS valves manufactured by HUF in March 2014 and started using ones made by VDO. My car was registered in Sept 2014 so the valves supplied with my new wheels / winter tyres were programmed up to act as VDO's but it now seems my car (which rolled off the production line in late August 2014) was fitted with the old HUF valves.
It seems that buying valves remotely (eg over the web) is a very hit-and-miss affair because you can't take anything for granted. It appears the only way to avoid problems altogether it is to get the original valves scanned to obtain their id_codes prior to ordering the new valves. Most tyre centres, including Kwik Fit, have the necessary tech and it takes 5 minutes to scan the valves but I'm sure they won't be happy to do it for free if they know there's no work likely to accrue.
There should be no issue when people come to replace valves because the battery has died. The tyre centre supplying the new valve will be able to get the codes from the old one (even if they have to remove the tyre to do so).
But buying a set of rims, tyres & valves without obtaining the codes beforehand is liable to be problematic
As an aside, scanning the new valves this morning indicated that the new valves aren't transmitting!! So, even if they had been programmed like the old HUF ones, the car still wouldn't be able to find them
|
|
|
|
|
|
Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
|
| jbob wrote: |
My car is a 2013 Passat. ........ it can figure out itself when I change the wheels for one corner to another. |
If it can tell you have moved a wheel from one location to another, I think it must be a direct TPMS system. I've certainly not read of an ABS-based system which can do that but I'm happy to be corrected.
|
|
|
|
|
|
You need to Login to know who's really who.
You need to Login to know who's really who.
|
|
Just go to a specialist and get them coded out I've done it on several cars due to leaking valves, plus I'm not willing to pay stealership prices to code new valves.
|
|
|
|
|
|
Anyway, snowHeads is much more fun if you do.
Anyway, snowHeads is much more fun if you do.
|
|
Our Merc has TPMS which work fine with the summer wheels.For the winter tyres theres a way of turning the system off so it doesn't keep flashing at you
|
|
|
|
|
|
You'll need to Register first of course.
You'll need to Register first of course.
|
| skribble wrote: |
| Our Merc has TPMS which work fine with the summer wheels.For the winter tyres theres a way of turning the system off so it doesn't keep flashing at you |
Don't take it for the MOT in that state!
|
|
|
|
|
|
|
|
FAQ
If I have a puncture (and over the years I've had a few, and managed to detect them without technology) I change the wheel and carry on. 
