I know from the drag coefficient that the Miata won't go faster than 121 which is why the chart for the 4.10 on 22.7's stops there. Not sure what kind of drag resistance I'll meet but those numbers for the 5.38 are very impressive.
Yeah but 64lbs total is too much rotational mass for that Miata drive train made for a 15lb wheel and 20lb tire. My 12lb wheels with these 24lb tires gets me 32" tires with only 36 lbs total rotational mass! Hopefully this will keep my axle shafts intact