after trying the TGR mirror riser, which wasn't so much a sliding fit as a major interference fit requiring the services of a light hammer, I gave up and removed the mirror altogether. I then recalled a small stick on mirror I had bought when I was teaching my lad to drive. Lo and behold it fits the hole where the original mirror was perfectly and the view through it is fine. No major vibration issues. So it looks as though I could have fixed the issue at nil outlay (I think the mirror originally cost around £3.50.

View attachment 11981

Looks lower than the standard one so doesn't seem to have solved the issue?

can the arm be adjusted?

 

Might just be the angle of the pic but it goes up a fair way and, more importantly, it’s less than half the width.....

 

I thought the GR Yaris mirror was big till I saw a granny driving the precious gen Yaris hybrid and the mirror was absolutely massive. Don’t know if it was aftermarket but it was ridiculous