Tyre Pressures

[Stephen211297]

Hi Guys,

Ive just got my new MG4 EV SR but when looking a the tyre pressures they seem to be different in what they say. Online some sites say 41 PSI which i think is way to high. Currently they are at 35/36 PSI. Can someone advise please as im not good at this.

 

[AndyM]

37psi all round. 41psi rears when fully loaded.

Mine was delivered at 35/36psi and I was getting warnings. I inflated to 40psi using the compressor in the boot which seemed to give 37psi allowing for some deflation by the time I managed to get the valve unscrewed. No warnings since. I much prefer the toggle clamp inflators as you can get them off quicker.

 

[Stephen211297]

thank you very much i will inflate them to 37 psi all round as i never usually fully load the vehicle

 

[Oberoy]

thank you very much i will inflate them to 37 psi all round as i never usually fully load the vehicle

There is a label on the driver door Pilar, open the door and look near the latch, for future reference if you need it out and about.

 

[Ian Key]

There is a label on the driver door Pilar, open the door and look near the latch, for future reference if you need it out and about.

I also put a label on the pump with the pressures on

 

[WonkoTheSaneUK]

I also put a label on the pump with the pressures on

I got a pump that works like the forecourt ones (it was the cheapest in stock at argos when I needed it).
You tell it what pressure you want before you start it, and it stops ~0.5psi higher to allow for unscrewing the hose. It also remembers what it was last set to, so I don't have to.

 

[Hallix73]

I got a pump that works like the forecourt ones (it was the cheapest in stock at argos when I needed it).
You tell it what pressure you want before you start it, and it stops ~0.5psi higher to allow for unscrewing the hose. It also remembers what it was last set to, so I don't have to.

Have you tried it on the MG4 tyres? I have same pump that stops at set pressure and did all 4 wheels on mine and the readings from the car TPS where all different??
Which tells me dont trust the MG's TPS. A few have had problems with them as well.

 

[WonkoTheSaneUK]

Have you tried it on the MG4 tyres? I have same pump that stops at set pressure and did all 4 wheels on mine and the readings from the car TPS where all different??
Which tells me dont trust the MG's TPS. A few have had problems with them as well.
View attachment 13019

Sadly, my MG4 is somewhen in the future. I just run around all 4 with the compressor when the Renault complains that one tyre is low. The key is to be wrong consistently!

 

[siteguru]

Just got mine today (details/photos to come in a new thread) and the pressures were all slightly low ... ~34/35 psi. I have my own compressor and it let's me set target pressures - when I got home I set the target to 37.5 psi (to account for a little loss of pressure as you disconnect the clamp) and did all my tyres.

The iSMART app still shows low pressures (2.4/2.5 bar) but I think I'll need to drive the car for a bit for the pressures to be properly updated.

 

[tsedge]

Just got mine today (details/photos to come in a new thread) and the pressures were all slightly low ... ~34/35 psi. I have my own compressor and it let's me set target pressures - when I got home I set the target to 37.5 psi (to account for a little loss of pressure as you disconnect the clamp) and did all my tyres.

The iSMART app still shows low pressures (2.4/2.5 bar) but I think I'll need to drive the car for a bit for the pressures to be properly updated.

How exciting! Can’t wait to see the photos.

 

[Stephen211297]

Hi Guys, I have the warning coming on about pressure low when i start the car however they are at 38 psi all of them so im just wondering is this a fault or just a system glitch?

 

[the briggie]

Is that 38 as displayed in the ismart app?

 

[Stephen211297]

Is that 38 as displayed in the ismart app?

on the app it is saying all tyres 2.4 bar which im assuming is about 37/38 psi

 

[the briggie]

Try taking it up a on each wheel then take a drive to help the pressure control unit to calibrate the readings. If that doesn't do the trick then

 

[Ian Key]

on the app it is saying all tyres 2.4 bar which im assuming is about 37/38 psi

2.4 bar is 34.8 psi
They need to be 2.5 bar / 37 psi

 

[Stephen211297]

Sound daft but when i went to the gas station to pump the tyres up the pump doesnt fit on due to the alloys being to thick is there any other way to solve this?

 

[Stephen211297]

2.4 bar is 34.8 psi

ah brilliant thank you Ian so it should be about 2.8 Bar?

 

[WonkoTheSaneUK]

ah brilliant thank you Ian so it should be about 2.8 Bar?

38psi is 2.6 bar. 2.8 would be ~40psi

 

[the briggie]

That sounds like a garage pump issue not the car re not fitting given no one else has mentioned it. Have you tried it with the valve in different parked locations?

 

[Ian Key]

ah brilliant thank you Ian so it should be about 2.8 Bar?

According to the manual 2.5 bar / 37psi but some have found a couple of psi higher is beneficial