[Yokel]

I'm about to change the front tyres on my i30 CRDi. It's got the original factory Kumhos fitted but I want to change to something that generates less road noise.

What worries me is the TPMS. I've already had one valve break which the dealership changed under warrenty (confirmed that cold weather made the valves brittle) but I'd prefer to go to a tyre specialist to avoid the high cost that the dealer wants to charge me for new tyres.

Anybody had any problems with the TPMS and aftermarket tyres? Should it be reasonably straightforward to refit the TPMS unit inside the wheel hub and not cause a problem with the monitoring system?

P.S. Any recommendations on a decent low noise tyre @ 225/45 R17?

[Mike SX]

For road noise and fuel economy, Continental came out best overall.

[sparki30]

Yokel are you changing the weels as well ? If your just changing the tyres there won't be a problem as you do not remove the TPMS transmitter.

[eye30]

prefer to go to a tyre specialist to avoid the high cost that the dealer wants to charge me for new tyres.

Have you asked for a price from the Dealer?

Just for info what mileage do they have now that they due for replacement?

I had my 4 replaced recently and believe it or not the Dealer was as competitive as independent tyre places.

They would get me a price on various makes etc so I was able to compare like with like.

ps Welcome Yokel

[Shambles]

Sparki is right. The transmitter is embedded in the valve stem and won't get touched during a tyre change.

Also agree with eye30, in that the dealer will have bulk buyers power and should be able to do you a great deal.

[Surferdude]

The TPMS may be embedded in the valve, but you should be aware that it is normal practice to replace the valve whenever you replace the tyres, to avoid developing slow leaks around the valve base where it snaps into the rim, as the rubber ages and goes hard.
If the tyre fitter isn't aware of the TPMS he's likely to rip the old valve out without looking.
I'm not sure what its like in the UK (assuming that's where you are) but car dealers are generally more expensive than a specialist tyre dealer.
I'd go and talk to a specialist place which sells a few good brands and ask their advice, tell them you will be shopping around (and do so). Also ask them what they know about TPMS and base your buying selection on how they answer you. Not worth saving a few dollars/ pounds on the tyres only to have the TPMS damaged. Having said all that, car dealers' service departments aren't normally known for having top line tyre technicians on staff either.

[Lakes]

The TPMS may be embedded in the valve, but you should be aware that it is normal practice to replace the valve whenever you replace the tyres, to avoid developing slow leaks around the valve base where it snaps into the rim, as the rubber ages and goes hard.
If the tyre fitter isn't aware of the TPMS he's likely to rip the old valve out without looking.
I'm not sure what its like in the UK (assuming that's where you are) but car dealers are generally more expensive than a specialist tyre dealer.
I'd go and talk to a specialist place which sells a few good brands and ask their advice, tell them you will be shopping around (and do so). Also ask them what they know about TPMS and base your buying selection on how they answer you. Not worth saving a few dollars/ pounds on the tyres only to have the TPMS damaged. Having said all that, car dealers' service departments aren't normally known for having top line tyre technicians on staff either.

Surferdude, i know this is off topic, but what do you think of steel tubless valve that have like ruber o ring sealing metal to rim? they are hi performance i know, but do you think they are safer than the stock ruber type tubless valves? ( good to have you to ask )

[Lorian]

On ebay you can find a TPMS service kit, which includes new seals, seems to be recommended you replace the valve seals whenver the tyre is replaced.

[Surferdude]

The TPMS may be embedded in the valve, but you should be aware that it is normal practice to replace the valve whenever you replace the tyres, to avoid developing slow leaks around the valve base where it snaps into the rim, as the rubber ages and goes hard.
If the tyre fitter isn't aware of the TPMS he's likely to rip the old valve out without looking.
I'm not sure what its like in the UK (assuming that's where you are) but car dealers are generally more expensive than a specialist tyre dealer.
I'd go and talk to a specialist place which sells a few good brands and ask their advice, tell them you will be shopping around (and do so). Also ask them what they know about TPMS and base your buying selection on how they answer you. Not worth saving a few dollars/ pounds on the tyres only to have the TPMS damaged. Having said all that, car dealers' service departments aren't normally known for having top line tyre technicians on staff either.

Surferdude, i know this is off topic, but what do you think of steel tubless valve that have like ruber o ring sealing metal to rim? they are hi performance i know, but do you think they are safer than the stock ruber type tubless valves? ( good to have you to ask )

They are worthwhile, but seem to have fallen out of favour (cost?) in recent years. There was a time when we used to insist on fitting them to alloy wheels because the rubber snap-in type is distorted to fit the thicker alloy rim and there is a possibility of them splitting. Also at speed they can distort with centrifugal force, with the same result.
Because the metal ones screw up like a nut and bolt they adapt to the thickness of the rim and won't distort at speed. However these days a lot of dealers just fit the rubber ones. If I had alloys I'd go for the metal ones. In fact, although I haven't seen a TPMS (well, I have but not the ones on Hyundais) I'd guess they probably are metal valve stems.

Sparki is right. The transmitter is embedded in the valve stem and won't get touched during a tyre change.

My concern would be that, in demounting the old tyre, or in mounting the new one, the tyre bead can be wedged against the inside of the valve and damage the sender unit, if the technician isn't careful about how he does it. Goodyear had a technical bulletin which they circulated to their dealers when the BMW Mini came out with run flat tyres. BMW Europe had developed the bulletin and circulated it all over the world because they were concerned about damage in this way.

[Lakes]

thanks for that Surferdude, i will fit the metal ones to my SLX alloys.
i had a friend experience, what you are talking about. with an R1 yamaha that was streamlined to do speed trials on the salt lake in SA ( Lake Garner ) he was at high speed the rubber tubeless valve distorted & broke letter all air from rear tyre, he was lucky to get away with just a broken collarbone.
i always run steel on my bikes