I dont think the frontal area would increase that much. Normally the tire is fitted like a donut so its much wider than actual contact patch. Then it just goes back to same width as the contact patch. More wider part would come on the higher proportion so its almost behind the front bumber or front tire spats.
https://www.facebook.com/photo.php?f...type=3&theater
Center of the tire is low rolling resistance compound and outer edges more grippy...