Excess front tyre wear on the inner 'edge' around the rolling circumference of a tread is likely a symptom of excessive toe-out.
Outer 'edge' wear is likely excessive toe-in. (I don't think Jazz has any camber adjustment.)
Without an adjustment to correct toe setting, any new tyres fitted will wear out 'unevenly' and prematurely just the same as the old.
The excess wear can be on just an inch across the tread (as mine was) or over a 'quarter' (more or less) across the tread around the whole of the tyre's rolling circumference. If you look at it closely enough, the tread may appear 'scuffed/scrubbed/ feathered' in one direction or t'other across the tyre. Again, the wear - inch/quarter/whatever - is around the whole of the tyre's rolling circumference. (Otherwise the uneven wear may be caused by something else.)
At just £26 by an independent tyre fitter, the price of my front wheel tracking/alignment was well worth it.
The very curious thing for me was that the Honda dealer technicians, on two separate occasions a few months and a few thousand miles apart, pronounced the (obvious) tyre wear as within 'acceptable' limits. Well, I didn't consider the wear 'acceptable' at all and I didn't want to pay £45 for them to 'track/align' it without a second opinion and quote.
And so that second time I immediately drove a couple of miles to an independent tyre fitter who showed me the extent of the misalignment which he defined as 'slight.' However, unlike Ozzie's feedback of '1mm,' I can't recall by how much/little it was 'out.' It was too long ago - March 2011.
If I were ever to take a car to one dealer/indie/tyre fitter who then pronounces the tracking/alignment as 'OK' in the face of uneven tread wear around the rolling circumference, I'd go to another for a second opinion and a second check. Premature front tyre wearout due to incorrect alignment is just unnecessarily poor value for me. Tyre 'scrub' due to misalignment adds to rolling resistance and therefore consumes more fuel, too.
OE Dunlops on a 1.2SE 59 Jazz... My front tyres would have been illegal by 18,000 miles, easily so. Yet now, with no change to driving style or to mix of roads travelled, they will likely do 30,000 miles albeit they were rotated to the rear when the alignment was done. While the evenly worn rears were rotated to the front... to be able to check their wear as a result of the realignment job. 11,500 miles later and the wear is absolutely even across the tread and they, too, will do 30,000. (I don't usually rotate my tyres... except at tyre fitting when new tread ALWAYS goes on the REAR.)
If front tyres are wearing unevenly across the tread it's so worthwhile getting front wheel alignment checked/done! At least in my experience.
