That inspired me to record some measurements for other i owners to compare.
At 28,097km in my i the tyre treads measure :-
depths in mm
groove left 2 3 right
RR 4.8 5.8 5.7 4.7
LR 4.9 5.8 5.7 4.4
RF 3.6 4.3 4.3 4.2
LF 3.5 4.6 4.7 3.8
Tread wear indicators are at 1.6mm
I run these tyres at 39psi with plenty of 100km/h 1 person work.
The tyre wear suggests tyres are not over inflated.
The side wear probably reflects my enjoyment of cornering with the i's low COG.

If other i owners can make measurements then we can get a picture of tyre wear and life expectancy.
It would be good to get a 'new' depth measurement by the same method.
