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Re:Re:Re:Swapping Tyres Around For Even Wear
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Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
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Rainer from sunny and warm Vienna
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If it's indirect swapping tyres around will not cause issues.
There are two different types of systems being used today: Direct TPMS and Indirect TPMS.
Direct TPMS uses a sensor mounted in the wheel to measure air pressure in each tire. When air pressure drops 25% below the manufacturer’s recommended level, the sensor transmits that information to your car’s computer system and triggers your dashboard indicator light.
Indirect TPMS works with your car’s Antilock Braking System’s (ABS) wheel speed sensors. If a tire’s pressure is low, it will roll at a different wheel speed than the other tires. This information is detected by your car’s computer system, which triggers the dashboard indicator light
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- Bill Portland
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RainerK wrote: I have the 5 original tires, all with TPMS and I made the 5 tire change as per manual and the TPMS did not show anything.
Rainer from sunny and warm Vienna
It would only show up something when a tyre is low on pressure. So swapping tyres might result in the system telling you the front nearside tyre is low, but in reality it could be rear offside tyre depending on the rotation you have done.
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I presume it doesnt monitor the spare tyre pressure?
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So, I would think that the original reserve tire also hat a pressure measurement. If it is „connected“ while mounted on the door I do not know. But that would be nice because also the spare tires might loose pressure.
I once had this on my other car, but luckily I had a compressor.
In the manual is written that after using the reserve tire the TPMS light will light for 10min. I did not observe this.
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If the G4 shows actual individual tyre pressures then it implies it's a Direct TPMS system. I don't know for sure as I don't own a G4.
If it's direct TPMS various systems exist with single or more receiving nodes, going as far as individual identification of each wheel with a unique ID number logged with the ECU. This system requires the ID to be reprogrammed to the ECU if you rotate the tyres as it will no longer accurately reflect it location on the car. So it will still work post rotate, but it will just tell you the wrong location for the tyre.
I don't know which system the G4 uses, but if someone with a G4 swaps the tyres around and let's one down we will soon know if it's a problem or not. I hate gadgets
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- Bill Portland
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My car shows 4 individual tyre pressures (in psi) and its position, no mention of a 5th. Suggests 4 transmitters and 4 receivers. So moving 4 wheels shouldn't be an issue. Introducing the spare shouldn't be an issue either, provided it also has a transmitter. But it looks like the spare isn't monitored even if it has a transmitterRainerK wrote: I am not sure that there is something in the weel arches that measure the individual tires. And there is only a yellow light in the instrument cluster to show that some tire pressure is to low.
So, I would think that the original reserve tire also hat a pressure measurement. If it is „connected“ while mounted on the door I do not know. But that would be nice because also the spare tires might loose pressure.
I once had this on my other car, but luckily I had a compressor.
In the manual is written that after using the reserve tire the TPMS light will light for 10min. I did not observe this.
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Doubt very much if I will bother, unless two start wearing faster.
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there
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