And as others have said, most cars, not just MGs, seems to have this problem.
I agree.
Most of the VAG models look terrible after a short while, the hub ( not the disc itself ) will go rusty and it looks unsightly through the rear alloys.
You could always rectify this problem by removing the wheel and treating the outer drum of the disc with a silver heat resistant paint.
But the small problem is, when they install the alloys wheels, onto the mild steel hubs, after a short while corrosion take place because of the dissimilar materials.
Making it very difficult to remove the road wheel due to the build up of white furry corrosion.
Of course, this could be totally avoided by the use of a slight smear of grease around the hub before the wheels are installed.
But that’s WAY to easy !.
Every car I have owned with alloy wheels, I have removed them almost straight away and cleaned the surface rust from the hubs, then applied a thin film of copper grease, around the steel boss, before refitting the road wheels.
I learnt this lesson many years ago when travelling to work at 5.00 am one morning and got a puncture in the O/S/R tyre.
The car was a VW Golf and was less than 9 months old,after jacking up the car and removing the bolts, do you think I could get that alloy wheel off the car !.
Managed to get a lift into work and then returned at diner time with a 2lb copper and hide hammer !.
After turning and beating the tyre from back, after about 3 minutes, the wheel finally released from the hub.
White corrosion had fixed the rim solid to the hub in that very short time.
Mind you, the car could have been built ages before I bought it of course.
Picture this, you are unlucky enough to get a puncture, hey …. but not to worry because you have invested in either a space saver or a full sized rim for your ZS EV !.
Here is the frustrating part, you can’t get the alloy off the car in order to fit the bloody spare !.
“Top Tip”.
Eliminate this by doing what I have done folks, you will thank me when it happens.
The longer that alloy is on the car, the less chance you have of getting it off at the side of the road, trust me I know !.
Remember, the dealer is very unlikely to remove the road wheels UNLESS you have a problem that necessitates there removal.
Brake pad wear is inspected without the wheels being removed.
In theory, if you are puncture free, then the first people to remove any wheels, is likely to be a tyre shop when they replace your front tyres.
Our yourself if you get a puncture that is.
Of course, you could leave it to the AA.
But if you have purchased a spare, you are likely to tattle the job yourself and be back on the move as quickly as possible.
Depending on your driving style and usage, it could be over two years+ before the wheels are removed for the very first time,
from the wheels being first installed at the factory.
Good luck with that one !.
I have removed road wheels from cars I have owed and pre treated with copper grease after 3 years and the wheel just falls off the car.
They are SO free from corrosion, it is a good idea to leave one bolt slightly holding on the road wheel onto the hub, until you are ready to finally release the wheel from the hub.