Spare Wheel in Australia

The spare wheel is the same even though the alloy sizes differ.
? There has to be considerable difference in tyre diameter between 17" and 18" alloy wheels.

Are you saying that all the GS, HS, MG5 etc use the same spare wheel rim size? And there are different profiles of space saver tyres to fit that same to equal the diameter of the various main tyres? Is this a 17" rim for 125 mm temporary (space saver) tyres?

A centimetre difference in diameter might not look like much, but if you try to drive at 80 km/h, I'm sure it could be quite dangerous. You mightn't even be able to steer at all.

I guess that one inch difference in rim diameter is pretty close to 12.5 mm in radius, which is 10% of 125 mm, the width of the space saver tyre. So if the right size tyre for a ZS EV is T125/90 R16, you could get the same diameter from a T125/80 R17 (on a 17" rim, obviously).

There is also the offset to consider. But hopefully, all the MG models discussed have the same offset. For a temporary tyre, the offset probably doesn't matter too much, as long as the rim clears the hub.

How to read tyre sizes.
 
? There has to be considerable difference in tyre diameter between 17" and 18" alloy wheels.

Are you saying that all the GS, HS, MG5 etc use the same spare wheel rim size? And there are different profiles of space saver tyres to fit that same to equal the diameter of the various main tyres? Is this a 17" rim for 125 mm temporary (space saver) tyres?

A centimetre difference in diameter might not look like much, but if you try to drive at 80 km/h, I'm sure it could be quite dangerous. You mightn't even be able to steer at all.

I guess that one inch difference in rim diameter is pretty close to 12.5 mm in radius, which is 10% of 125 mm, the width of the space saver tyre. So if the right size tyre for a ZS EV is T125/90 R16, you could get the same diameter from a T125/80 R17 (on a 17" rim, obviously).

There is also the offset to consider. But hopefully, all the MG models discussed have the same offset. For a temporary tyre, the offset probably doesn't matter too much, as long as the rim clears the hub.

How to read tyre sizes.
There may not be much difference in total wheel size between 17" and 18" rims as larger rims tend to have lower profile tyres.
 
There may not be much difference in total wheel size between 17" and 18" rims as larger rims tend to have lower profile tyres.
Yes, agreed. But I worry about mismatched tyres on the same axle, especially at the front where it will affect steering.
 
Yes, agreed. But I worry about mismatched tyres on the same axle, especially at the front where it will affect steering.
I believe the manual says the spare has to be on the rear axle. If you have a puncture on the front you are supposed to swap a rear wheel over.
 
Ok, thanks. I've relaxed a bit now.

It seems to me that a space saver for any HS that comes with a T125/80 R17 or T125/90 R16 tyre should work, and should have the 5x112 bolt pattern. It seems that space savers are often lower diameter than standard tyres, and that this is acceptable for emergencies.
 
I meant to add to the above: So I wonder if we can find an Indian ZS EV VIN number, and buy a known-suitable space saver as a spare part from our local MG parts dealer?
 
Follow this link to my option for a full sized spare.
 
Arrgh! It turns out that the demonstrator I thought was a HS was in fact a petrol ZS. So I must have suffered from confirmation bias when I decided that the spare tyre from that "HS" would fit a ZS EV. In my weak defence, holding the spare next to the wheel of a vehicle, it's hard to judge whether they line up, because one has a tyre under load, and the other has 420 kPa in it (hard as a rock).

Worse, the salesperson tells me that there are 8 (eight) versions of the HS! Some have 18" wheels, others 17" wheels. The different sized wheels have the same pattern of alloy wheels, and 18:17 is only 1.059:1. So I have no idea which if any versions of the HS are compatible with the ZS EV.

The HS PHEV have no spare tyre, and come with the same 8 A EVSE (in Australia) that we get in the ZS EV.

Fortunately, the Chinese are known for their meticulous documentation of their various products, so I'll have no trouble sorting this out. Oh, wait, the other thing... o_O

The spares I saw in HS models were T125/80 R17 99M. The ones with 17" wheels had 215/60 R17 tyres, which are a little taller than the 215/50 R17 tyres found on Australian ZS EVs. So that indicates to me that even the spares for the 17" HS would be too big. We could possibly get a space saver with a lower profile, to better match our tyre diameters. And my ZE EV tells me that the spare tyre size "if required" is T125/90 R16.

Wheels!

giphy.gif
Yep, a PITA isn’t it?

I’m in Brisbane Australia as well, gen 1 ZS EV, may upgrade to a face lift … but the lack of spare wheel kit in this country!?

FWIW, so happens that I have overheard BS from salesperson to elderly couples in both instances - one with a BYD Atto 3 & the other with a Volvo C40 (even more bizzare, diff. size wheel front & back). The usual lying spell - you don’t need a spare, no one gets flats, there’s roadside assist etc etc. Never driven on country roads or had a sidewall puncture from a pothole?

Even in the MG manual it states that the repair kit should not be used for a side wall puncture. Then there’s the goo itself & if used practically makes the tyre unusable & needs to be replaced.

A couple of things I’ve gleaned: I) really need to carry a tyre plug kit - so much more useful for the ‘ideal puncture’ & doesn’t kill the tyre. Tesla drivers mention this a lot. And ii) apparently it is possible to have a space saver kit made up at one of the national tyre centres, may be well worth while.
 
Have a look at my post on the space saver tyre here in OZ !!
I haven't had a flat (yet) and since October last year have travelled 12K.. with no issues :)
far cheaper and I know it works (y)
 
I was unable to get hold of a space saver kit in Australia. To buy the UK kit via eBay involved very high shipping expenses, so in the end I had to buy a rim from MG in Australia for $AUS446. I put on a cheapish Maxxis tyre ($119.00) and added a scissor jack and wheel brace for $55.00. All of this fits comfortably in the wheel well and there is still room for a type two cable and two chargers. So for just over $600 I guess this is the best I could come up with:View attachment 2634
I am selling it at the moment spare wheel original MG rim and tyre maxxis original MG for $250 17inch and 95 thread i have upgraded my wheel to 19" + delivery fee around Australia around $50 -$60 for each wheel please PM if anyone need one in Australia . I have posted in sale area
 

Attachments

  • wheel1.jpg
    wheel1.jpg
    417.5 KB · Views: 64
  • wheel2.jpg
    wheel2.jpg
    431.5 KB · Views: 61
Support us by becoming a Premium Member

Latest MG EVs video

New EVs from MG: MG S9 & MG9 plus hot topics from the forums
Subscribe to our YouTube channel
Back
Top Bottom