BimmerFile Exclusive: According to some very well placed sources, electronic differential and specialized DSC currently found in the 135i will eventually make it ‘s way to a special performance variant of the 335i expect in the next few years. Look for the 335i to follow along the tradition of the 330i Performance Package that was offered over the last several model years of the E46 ‘s model life-cycle (US only) complete with many of the components found in the newly released “BMW Performance ” catalogue.