Well first to kill the reborn question.. It was just an advertisement scheme to call it civic reborn, otherwise it is known as 8th generation civic.
Secondly regarding your question of 16" rims.. whenever you deviate from the original recommended size of the wheels for any given car, you sacrifice your ride, economy, and suspension. however only 3 percent difference with respect to the original setup is allowed.
If at all you want to move on to 16" then you have to reduce the aspect ratio of the tyres that you would be using.. for calculating all this goto http://www.miata.net/garage/tirecalc.html
One thing that you should keep in mind is that the lesser the aspect ratio, lesser would be the ride quality and also more stress on the suspension... On the other hand the lesser the aspect ratio better would be the car handling but keep the original figures as standard.
Hope this makes the site useful for you.