This really annoys me when people say that 19s are bigger than 17s..... it makes no difference to the height of the vehicle because the rolling diameter is the same... don't beleive me , check this handy link http://www.miata.net/garage/tirecalc.html on topic , I think you may have STD height in the front . I have SL front and rear and it is a lot lower than yours looking at the pics.