Front wheel design

Hello all just a quick question that’s bugging me it might have been answered before I just couldn’t find out

Why is the front wheel on uk domestic transport trucks kind of like cone shaped (ish) but international ones are more like a flat surface.

Also the tyre on those looks bit different not that balloon side but flat as well

Thanks for your time

More than likely you’re noticing ones with almost a super single type tyre fitted. Plenty of domestic lorries run them too.

Like this?

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