MOT rules (2012 onwards), tyres, run-flats and TPMS
Discussion
Bonefish Blues said:
So is the necessity for a TPMS a misunderstanding on the part of the tyre fitters?
No.1. If you have runflats you really ought to have TPMS - otherwise you won't know if you have a puncture and risk eventual disintegration of a punctured tyre. The strengthened sidewall can only take a limited amount of punishment.
2. TPMS, where fitted, will become an MOT failure on newer cars if it's not working. (Irrespective of what type of tyre is fitted).
Ozzie Osmond said:
Bonefish Blues said:
So is the necessity for a TPMS a misunderstanding on the part of the tyre fitters?
No.1. If you have runflats you really ought to have TPMS - otherwise you won't know if you have a puncture and risk eventual disintegration of a punctured tyre. The strengthened sidewall can only take a limited amount of punishment.
2. TPMS, where fitted, will become an MOT failure on newer cars if it's not working. (Irrespective of what type of tyre is fitted).
Do you know the answer to my earlier question as to whether it's required by law to be a remote monitoring TPMS or if this would be OK (as I've said earlier it's the local hack so a daily check will be fine, I think) http://www.tyre-pressure-alert.co.uk/index.html
Bonefish Blues said:
My question is whether this little device would satisfy that requirement (and the upcoming MOT): http://www.tyre-pressure-alert.co.uk/index.html or whether I need an in-car monitoring system.
You can buy systems that'll give you a readout on a display box you keep in the car for about £95I'm pretty sure there is no specific legal requirement to have tpms when running runflat tyres it is just a strong recommendation by the tyre manufacturers .
Many tyre shops will be certified as an 'official' runflat approved tyre fitter by one or more tyre manufacturer, these certificate will require that they only fit them to vehicle with tpms.
They will also most likely be required to only fit them to rims with an EH2 or EH2+ inside bead, if your car never had runflats as an option then it may not have the right rim construction, which would mean there is a risk of the tyre coming off the rim while corning with a deflated tyre, especially when there is no warning to tell you to slow down when the tyre has deflated
those tyre pressure monitors linked to are not really suitable for alerting you to a flat runflat, because they won't let you know while your driving, also they are for detecting low pressure not zero pressure, i would not be surprised if they deactivate when they detect no pressure or the battery would go flat if you removed them for a couple of weeks
Many tyre shops will be certified as an 'official' runflat approved tyre fitter by one or more tyre manufacturer, these certificate will require that they only fit them to vehicle with tpms.
They will also most likely be required to only fit them to rims with an EH2 or EH2+ inside bead, if your car never had runflats as an option then it may not have the right rim construction, which would mean there is a risk of the tyre coming off the rim while corning with a deflated tyre, especially when there is no warning to tell you to slow down when the tyre has deflated
those tyre pressure monitors linked to are not really suitable for alerting you to a flat runflat, because they won't let you know while your driving, also they are for detecting low pressure not zero pressure, i would not be surprised if they deactivate when they detect no pressure or the battery would go flat if you removed them for a couple of weeks
Why would you want run-flats anyway. I've never had a puncture that slowly deflated while I was driving, I've had a few blowouts that result in instantaneous deflation normally accompanied by large holes or a completely destroyed tyre, would a run-flat still work? If I ever approached my car and found a deflated tyre before moving off I'd change it.
Bonefish Blues said:
OK, thanks.
Do you know the answer to my earlier question as to whether it's required by law to be a remote monitoring TPMS or if this would be OK (as I've said earlier it's the local hack so a daily check will be fine, I think) http://www.tyre-pressure-alert.co.uk/index.html
Just don't worry about it - only MOT the car with summer wheels & tyres on (that have TPMS).Do you know the answer to my earlier question as to whether it's required by law to be a remote monitoring TPMS or if this would be OK (as I've said earlier it's the local hack so a daily check will be fine, I think) http://www.tyre-pressure-alert.co.uk/index.html
hi,i own a 2006 lexus gs 300 which tpms valves are fitted as standard,and yes u guessed it ive been warned that any info lights on dash such as low tyre warning light,will be a fail tried taking out all the tpms valves it still shows on dash ,checkd out tpms valves 3 out of four don't work,more good news to replace and fit 200 quid ,then you think replacing tyres just as well as they charge for refitting old tyres on top of new tpms sensers/balancing etc.bloody ridicolous,you know when you got a flat tyre or one that's lower than the rest. point of all this law says 2012 cars mines 2006,but the dash warning lights wont go out,ive tried, so is there a way round this,anyone know. thanks guys brian.
rickalfas.thanks for that,theyr dear enough but the catch is the tpms resetting tool over 100 quid,call out a guy bit more,so its a stup out the money time,unless another way round,to me its not a safety feature ,youd have to be dumb not knowing you got low pressure tyres,thanks brian.
a13bhw said:
rickalfas.thanks for that,theyr dear enough but the catch is the tpms resetting tool over 100 quid,call out a guy bit more,so its a stup out the money time,unless another way round,to me its not a safety feature ,youd have to be dumb not knowing you got low pressure tyres,thanks brian.
I’ve not had to reset any - BMW, Merc, Suzuki. Just drive around for a bit and the new sensors sort themselves out. Yours might be different, but i havent needed any special tools.Exige77 said:
If you buy an old executive car full of tech cheap, you should expect some of the tech to need fixing.
This issue is not exactly big money is it ?
Wait until the ABS light comes on.
It's normally just Hall effect sensors or connections. This issue is not exactly big money is it ?
Wait until the ABS light comes on.
What I wonder is how long airbags really are supposed to last? Some must be knocking on 30 years old now.
So can we assume that either TPMS is so clever, it knows if the tyre is run flat or not? If the pressure is the same, and it should be, the the tyre /valve monitor will monitor the air pressure as normal. If the monitor system relies on rolling diameter, that will also be the same. (as mine are).
My 5 series hasn't had run flats for years and the MOT has never recorded a fail. Some enterprising tyre salesman trying to earn a few quid extra.
My 5 series hasn't had run flats for years and the MOT has never recorded a fail. Some enterprising tyre salesman trying to earn a few quid extra.
Gassing Station | General Gassing | Top of Page | What's New | My Stuff