Run flats

[Everest]

One of the (hopefully) final pieces in my "what-do-I-need-to-know-before-buying-an-MG4" knowledgebase is tyres. Being not that young and living in the countryside, I'd far rather have run-flats tyres than a repair kit that the MG4 appears to come with as standard.

Is that possible and, if so, what tyres are people using? Do Trophy LR models have 17" or 18" tyres - a pic I saw on an advert showed 235/45-18's, but the manual says 215/50-17's. Were 18's an option on purchase?

Also, coming from (cover your ears, @Rolfe) a BMW, where I recently had two 225/45-17 Continental Run-flats fitted for under £230, I'm finding the price of the 235/45-18's more than double and the 215/50-17's non existent... Am I missing something here?

 

[siteguru]

The 1st phase of Trophy cars had 17" wheels; later versions have 18" wheels.

 

[Tig170]

One of the (hopefully) final pieces in my "what-do-I-need-to-know-before-buying-an-MG4" knowledgebase is tyres. Being not that young and living in the countryside, I'd far rather have run-flats tyres than a repair kit that the MG4 appears to come with as standard.

I guess I'm of a similar age and a country bumpkin, , I find run flats very hard, what I've done on my BMW Z4 (and also on the MG4), is purchased a 2nd hand get me home wheel & tyre), which are only used on journeys away from home (i.e. away on holiday) - touch wood in nearly 35+ years of driving never had an issue with roadside punctures.

 

[ReintjeWA]

The only 235/45R18 run-flat with the correct load bearing capacity I’ve found here in Australia was a Pirelli. Which is a non-repairable brand (here anyway). I don’t particularly care about them being repairable, but it is a consideration for some, as it potentially means more waste from your car, and increase cost every time you pick up someone’s lost and found hardware.

I’m keen to get run-flats put on my MG4, especially some time next year when we move and my daily commute will be 110km round trip out of the city. But I’ll be getting some alloys to go with them so I have more options, and will likely get some ev-rated run-flat Michelins with the foam liner.

 

[kenneth104]

There are 6 common models in China, except XPOWER, all others are equipped with 17-inch tires

1, LFP415
2, LFP425, LFP425+L2
3, NMC520, NMC520+L2
4, XPOWER

 

[KiwiMG4]

Just had my first on road puncture. I’m sitting in the tow truck as I type. The factory puncture sealant was a dismal failure.

Has anyone found a suitable alternative repair kit? Or am I getting towed with every flat I get?

 

[MG Clive]

Has anyone found a suitable alternative repair kit? Or am I getting towed with every flat I get?

Post in thread 'I should have kept that space saver from the Golf.'

Mar 29, 2025

Oh bad luck Rolfe, didn't the car's tyre repair system work, or didn't you give it a try.

Like other members on here, I've carried one of these in the boot of my cars for many years.

• MG Clive

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[Rolfe]

Don't start me.

Thread 'I should have kept that space saver from the Golf.'

Mar 29, 2025

Several times I moaned about having let my written-off Golf go to Copart without keeping the space saver wheel, because I didn't know it would fit the MG4. Well.

A week ago I decided that since it was a nice day and I'd never been to the Lake District, I'd have a day out there and drive the Wrynose/Hardknott pass road. I had seen a video of someone doing it in a Morgan and thought an EV would handle it very well. I set off in the morning, stopped at Tebay for lunch and a charge, then headed across to Ambleside. It wasn't as nice a day as the forecast had predicted, which disappointed me a...

• Rolfe
• ev mg4 puncture rescue saver space saver
• Replies: 76
• Forum: MG4 EV Forum

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[Kithmo]

I bought the official MG ZS EV space saver kit, which also fits SWBO's MG5 and my MG4, back in 2020 and have not used it yet.
I also carry one of those kits in @MG Clive's post, also a kit for inserting rivet shaped plugs, a can of puncture repair goo that came with the ZS Super guard paint protection kit as well as the goo and pump that came with the MG4, this sort of guarantees I won't get a puncture and need to use any of them.
Edit: do you think I should get a full size spare as well to be on the safe side ?

 

[T1 Terry]

I bought the official MG ZS EV space saver kit, which also fits SWBO's MG5 and my MG4, back in 2020 and have not used it yet.
I also carry one of those kits in @MG Clive's post, also a kit for inserting rivet shaped plugs, a can of puncture repair goo that came with the ZS Super guard paint protection kit as well as the goo and pump that came with the MG4, this sort of guarantees I won't get a puncture and need to use any of them.
Edit: do you think I should get a full size spare as well to be on the safe side ?

Where did you get the rubber rivet repair plug kit? We used these a lot before steel belted tyres, but they also work great for a sidewall small hole to get to somewhere a serious fix or replace can be made ...... added with the over fill of "Slime" they work a treat to get that few hundred kms to the next service place when travelling in the Great Australian Outback, read anywhere more than a few hundred kms for the coast

T1 Terry

 

[DixieTGS]

Just had my first on road puncture. I’m sitting in the tow truck as I type. The factory puncture sealant was a dismal failure.

Has anyone found a suitable alternative repair kit? Or am I getting towed with every flat I get?

This video is worth a watch if you're considering other methods.

Post in thread 'Puncture.' Puncture.

Although I don't expect to use them if I get a puncture, I carry a tyre string kit and a few tyre screws now just in case.

 

[Tuareg]

Where did you get the rubber rivet repair plug kit? We used these a loy before steel belted tyres, but they also work great for a sidewall small hole to get to somewhere a serious fix or replace can be made ...... added with the over fill of "Slime" they work a treat to get that few hundred kms to the next service place when travelling in the Great Australian Outback, read anywhere more than a few hundred kms for the coast

T1 Terry

I bought several kits for my motorbikes and cars from aliexpress, great choice there.

 

[pjmmk]

Amazon have loads of these things of different types. All of them probably far better than those cans of goo they expect you to spray in via the valve. Even if that horrible muck does seal the hole, which is unlikely, you'll be looking at a new valve and tyre, and possibly a new pressure sensor as well.
In theory, the tyre fitter could clean the goo out of the tyre and repair it, but they won't and I don't blame them.

 

[Kithmo]

Amazon have loads of these things of different types. All of them probably far better than those cans of goo they expect you to spray in via the valve. Even if that horrible muck does seal the hole, which is unlikely, you'll be looking at a new valve and tyre, and possibly a new pressure sensor as well.
In theory, the tyre fitter could clean the goo out of the tyre and repair it, but they won't and I don't blame them.

Some aftermarket goo is water based and easy to clean out for repairs.
Unfortunately the MG supplied one isn't, so it's a new tyre job after inserting the official goo.
The goo is a waste of time anyway, if it's a blowout or large hole, it wont work and if you have a small puncture the electric pump in the kit is handy, you can usually just leave the nail or screw in and pump the tyre up to get you to the nearest tyre place or at least a place of safety.

 

[T1 Terry]

The mushroom headed units can be sticked together in a side wall tear if it's not to serious, a bottle of "Slime" that is water based, will keep the mushroom plugs sealed long enough to get to somewhere a tyre replacement can be organised.

The problem with these type of tyre repair is the steel belts will cut the plug in the hole to shreds, so it relies on the piece inside the tyre remaining in place to keep the air in the tyre, without the plug in the hole, the tyre will go flat very quickly as the nail or whatever that created the hole is no longer there for tyre to seal against ....

T1 Terry