First rumors of a supersport version of the BMW 135i Coupe surfaced almost a year ago. While BMW has never confirmed its existence, several reports followed with some details regarding this model.

The 135i Supersport was said to be a performance addition to the 1 Series family, a vehicle using lightweight materials, such as a Carbon Fibre Roof and bootlid ,upgraded suspension and brakes, lightweight glass and all the creative and performance comforts created for the M variant, but not under full MotorSport badge.

Around the same time, sources close to BMW mentioned that a different body kit will differentiate the SuperSport 1 Series from the regular BMW Performance Package.

Almost a year later and some spy photos of a prototype, rumored to be the 135i Supersport, have been posted on 1addicts.

We’re not yet ready  to jump to a full conclusion, so we will report on what we see in these photos. Clearly the prototype sports a carbon fiber roof, along with bigger fenders. The rear drilled brakes disk are also a clue that we’re looking at a higher-end sportier vehicle.

With the first test mules hitting the road, we expect to hear more news on this model in the upcoming months and of course, some new spy photos as well.