15x10 Keizer
http://www.keizerwheels.com/results.asp?category=11
http://www.systemstrategies.com/miata/Wheels/index.html looks like 10 lbs or so for less than 200 a wheel on a 15*10 not to horrible,

 

The wheels weigh between 10 and 11 lbs on the scale. Keizer said 10.5 so thats what I would quote.

Your link took me to wide-5 wheels. For the autocross wheels I am running its
http://www.keizerwheels.com/results.asp?category=32

And the cost is listed as $350 not <$200. Those were the lightest 15x10 I could find. You should check with the manufacturers but if I remember correctly the Kodiaks were ~12.5 lbs and the Bogarts ~14.4

My tire guy nicked the silicon when mounting them, so two of them leaked and had to be remounted. One is fixed, the other is in the process of being completely re-siliconed. Just something to watch out for on any multi part wheel. Clearances are really tight on the wheels so be sure to test fit the Keizers before you mount tires on them, as thats when the warrenty (but not the support) officially ends.

BTW 275s are cool!

 

oh that is you wow that sucks 350 is to much for me. sorry abou the leakage issues