You might taking corners faster--that would tend to eat the outer edges
and even out the wear pattern.  :-)

A good alignment matches wheel angles with driving style. Aggressive
cornering requires aggressive camber settings. Front-to-rear rotation is
a good idea, too; I recommend every 3000 miles for summer performance
tires and every 6000 for all-seasons. Tire pressure should be about 28
psi all around in most cases.

I bought a new 2004 in March and now have 24,000 miles on it.  I had to
replace the tires last week as they had no tread left on them ( I did not
check them as often as I should have - just assumed that tires would last
longer than this and only rotated once).

Can someone help me understand if this is something that I can look forward
to forever (this is my first Miata and I love it!!).  I have 205/45/16 size
tires.  I would prefer to replace them next time with higher profile and
smaller size, any recommendations??  I use the car more as a fun commuter
(about 100 miles per day) but do occasionally enjoy taking 30mph corners at
70mph, and also occasionally exceed 100mph during the commute.

Thanks for your help!

JohnnyA
'04Silver