New Car: 2013 BMW 135is Coupe & Convertible

BMW will extend its “is” badging to the 1-series starting this fall, when dealers begin taking deliveries of the 2013 135is coupes and convertibles. Whereas the 335is and Z4 sDrive35is are perhaps halfway between normal models and M cars—sort of M Performance cars before such a thing existed—the 135is is more like a 135i with existing off-the-shelf upgrades. Engine output for the 135is is