New tires without tpsm mg4

chukasto said:

Hi, is anyone driving around with normal tires without tpsm? Wondering if that is possible, or will it keep showing a warning light. Also just resetting the light like in other cars would be welcome. Also read that switching a wheel front to back will result in the same light. So any information or experience is welcome

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The sensors stay with the wheels when a new tyre is fitted. Unless your tyre place throws it out or something.

This does mean that the locations become inaccurate if the wheels are switched, as you note.

If you're changing the tyres, the tpms valves can remain in place, so you'd have no warning light problems.

Yes, my mistake. I meant wheels. I would like to have 2 sets of wheels-winter and summer. Currently buying new ones and wondering if I need the tpsm.

Bam Bam said:

This does mean that the locations become inaccurate if the wheels are switched, as you note.

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So just the locations become inaccurate, there is no warning light when switching?

chukasto said:

Yes, my mistake. I meant wheels. I would like to have 2 sets of wheels-winter and summer. Currently buying new ones and wondering if I need the tpsm.



So just the locations become inaccurate, there is no warning light when switching?

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Oh I think I misunderstood. I've had some tyres replaced and some wheels were switched in the process, but I haven't changed the wheels themselves.

If you got new wheels why couldn't you put the sensors in the new wheels? You'd ideally want the sensor to end up in the same place as it was previously.

It's possible to get replacement TPMS sensors and code them with the same IDs as the current sensors. Fit the new ones to the new wheels and all should be OK (subject to wheel positioning, as mentioned).

Search this board for Autel.

Bam Bam said:

If you got new wheels why couldn't you put the sensors in the new wheels? You'd ideally want the sensor to end up in the same place as it was previously.

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Because the sensors cost 200€ and I am not sure if they are already coded to the car so it might cost even more. Also if I have to take the car to the shop every time I switch wheels (twice per year) I will go bankrupt.

I thought maybe someone cheapened out and already tried this. In other cars I've dealt with you just turned it off/reset the sensor. It really isn't necessary if you pay attention to how the car behaves.

Bam Bam said:

Oh I think I misunderstood. I've had some tyres replaced and some wheels were switched in the process, but I haven't changed the wheels themselves.

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So for an example your front left wheel ended up on the back right? Have you had any problems regarding that? Does it just show up as a front left problem even if you back right has low pressure?
Or, if you don't have this problem, since I imagine you didn't do it yourself, do you know if the shop reprogrammed them to their new position?

siteguru said:

It's possible to get replacement TPMS sensors and code them with the same IDs as the current sensors. Fit the new ones to the new wheels and all should be OK (subject to wheel positioning, as mentioned).

Search this board for Autel.

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Right, thanks. If you have experience: that works for the new ''blank'' ones. If I switch the wheels can I change the codes so it is actually showing me the wheel having problems? (If I deal with all this it might as well show me the correct tire)


So to be clear. No-one has driven the car with wheels that do not have TPMS? Or there is no way to turn off the TPMS sensor, so it doesn't show the warning light?

Thank you all very kindly for your replies

I wonder if this car could be somehow coded to completly disable tpms system (perhaps some models might not have tpms, where it's not required?) or coded to work with abs instead (less likely i'd say).

See my comments here from an earlier post.
I'll find out what valves my garage fitted.
They charged me £10 per valve.

I'm no techi, and I think I've misunderstood what the garage did when my wheels were changed.
First the garage kept the sensors for the wheels.
This I understand are the ones that were on the wheels originally.
The valves screw or attach to the sensor in some way, and apparently there is more than one type.

So when my wheels were taken of and replaced the original sensors (the clever electronic bit) was the same as fitted to my vehicle originally, it was the air valve that was replaced as the original air valve had to be cut off and hence unusable.

But my experience is still that whatever corner of the vehicle the TPMS sensor is at, a slow dive for a short distance lets the TPMS system recognise the new position and record the tyre pressure correctly.

My apologies if I've misled anyone because of my misunderstandings.

Funks said:

So when my wheels were taken of and replaced the original sensors (the clever electronic bit) was the same as fitted to my vehicle originally, it was the air valve that was replaced as the original air valve had to be cut off and hence unusable.

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Yes thats how they work, they just replace the valve stem and screw back on the original hard coded TPMS sensor (you dont actually need to remove or replace the valve, they just do to maximise profit), the problem arises if you have a spare set of wheels (e.g. winter set) or rotate the typres, as the TPMS serial code is programmed to each corner.

To overcome this issue you can get new reprogrammable TPMS sensors (£10 unbranded to £30 Autel each), which allow you to copy and paste the old code onto the new code. I have an Autel TS508 to do it myself, but all tyre shops will also have something similar, which they will charge to do (I expect around £40 per corner incl sensor) - the otherway of doing it is via OBD, but I've found that my TS508 doesn't communicate with the MG4, but this was a year ago, so it may have been updated. Of course, your MG dealership will also do this, I think its around £160 for all 4 wheels.

Tig170 said:

(you dont actually need to remove or replace the valve, they just do to maximise profit),

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The reason my valves were replaced was because my set of wheels were in for powder coating, so had to be striped back to bear metal, cleaned and eventually baked to give the wheels their new look. So I had to have new valves.
But I agree, if its only fitting a new tyre or a repair, there is no need for new valves.