Pump up your tyres!

C

CCMG

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MG ZS EV
I just pumped up the tyres on my MG ZS EV LR. They wern't low enough to trigger any warning, they were at 2.6-2.7 bar. But pumping them up to just above the recomended 41 psi (2.8-2.9 bar) has noticably increased the efficiency on the same journey at the same time of day/bad weather from 3.3ish mi/kWh to 3.6ish mi/kWh.
It's worth checking them every so often as it really does make a difference to efficiency.
 
CCMG said:
I just pumped up the tyres on my MG ZS EV LR. They wern't low enough to trigger any warning, they were at 2.6-2.7 bar. But pumping them up to just above the recomended 41 psi (2.8-2.9 bar) has noticably increased the efficiency on the same journey at the same time of day/bad weather from 3.3ish mi/kWh to 3.6ish mi/kWh.
It's worth checking them every so often as it really does make a difference to efficiency.
Click to expand...

I have the same model. I was surprised that my tire pressure was with higher reading of 3.2 and 3.1 when I collect my brand new car last year. I have not pumped at all for 4k miles driving in 12 months. I just have reading of 2.6, just like yours. I thought annual service will help but it seems dealer did not do anything.
 
Although inflating the tyre pressures may improve the efficiency slightly, this can make the ride feel very choppy and uncomfortable.
Also it has the tendency to produce uneven tyre wear in the centre of the tyres.
The contact surface between the tyre and the road is naturally reduced.
This condition will affect traction from the driving wheels and also increase the cars stoping distances.
Especially in wet driving conditions.
Under inflated tyre pressures throw up a different set of concerns and problems.
 
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CCMG said:
I just pumped up the tyres on my MG ZS EV LR. They wern't low enough to trigger any warning, they were at 2.6-2.7 bar. But pumping them up to just above the recomended 41 psi (2.8-2.9 bar) has noticably increased the efficiency on the same journey at the same time of day/bad weather from 3.3ish mi/kWh to 3.6ish mi/kWh.
It's worth checking them every so often as it really does make a difference to efficiency.
Click to expand...
Now you pumped them up that far you grip will have gone and the middles will ware out rapidly as that's all that will be touching the road. I have mine at 2.3 bar which improves grip and handling and they last 40k miles without issue and ware is even and I get the same m/pwh on my 44kwh MK1 unit. I don't know why they say they need to be higher on the MK2 but I do know the default tyres on the MK2 are not great.
 
damo2929 said:
Now you pumped them up that far you grip will have gone and the middles will ware out rapidly as that's all that will be touching the road. I have mine at 2.3 bar which improves grip and handling and they last 40k miles without issue and ware is even and I get the same m/pwh on my 44kwh MK1 unit. I don't know why they say they need to be higher on the MK2 but I do know the default tyres on the MK2 are not great.
Click to expand...
You need to be a little careful running 20% lower pressure than the manufacturer recommends. In the event of a serious accident the insurance company could suggest running lower pressures could have contributed to the accident.
 
It's not high. It's what's recommended. So no issue with grip or wear.

Mk1 and mk2 have different recommended pressures
The mk2 is at 41psi. If you have a Mk1 then it's lower as I assume it has got different tyres.

damo2929 said:
Now you pumped them up that far you grip will have gone and the middles will ware out rapidly as that's all that will be touching the road. I have mine at 2.3 bar which improves grip and handling and they last 40k miles without issue and ware is even and I get the same m/pwh on my 44kwh MK1 unit. I don't know why they say they need to be higher on the MK2 but I do know the default tyres on the MK2 are not great.
Click to expand...
 
ched said:
You need to be a little careful running 20% lower pressure than the manufacturer recommends. In the event of a serious accident the insurance company could suggest running lower pressures could have contributed to the accident.
Click to expand...
You should be running the pressure the tyre company recommends for your car as such am not under pressure at all am over pressure as it says take -2 psi for summer. In my case am running quality tyres Michelin Primacy 4 will be e.Primacy in 5k miles not the cheap and nasty maxxis that's on the mk2 I have had maxxis tyres in the past on other cars and they are shockingly poor in the wet and ware horrible they come up as cracking on the 1st mot and I seen plenty of people switch them out back to Primacy 4 for a mk2
 
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Having had a two year secondment at a car assembly plant many years ago, I found that the manufacture of the car, will install what ever make of suitable tyre, that are able to secure a really good deal on at that point of time.
Huge batches of say Good Years, used for months on end, to be suddenly switched out for say Bridgestones etc.
They hold no loyalty to any one tyre manufacturer TBH.
This action can be clearly seen on the Gen2 ZS EV model, as the initial batch of cars came through with the Mich Primary that we have on our car, then they switched over to fitting the Maxxis for a while.
Bulk buying at its best !.
Bridgestones are a hard compound tyre and produce a lot of road noise, together with poor traction when pulling away.
Not on my list of favourite tyres TBH.
 
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