The B-model of the Porsche 356 was produced from autumn 1959 to 1961 as a coupé, convertible/hardtop and roadster. A distinction is made between the T5 and T6 models.
From 1960 Karmann also produced the «hardtop» in Osnabrück with a permanently welded roof, which differed from the «classic» Porsche Coupé in that it had a stepped roof line (almost like a notchback), narrow B-pillars and a large rear window, and was similar to the convertible hardtop .
The 356 B stood out from the A model primarily through its higher headlights and a line of fenders that was less rounded at the front. The bumpers were also placed higher, which enabled air inlets for the new light metal drum brakes in the front apron. The Porsche crest was embossed on the hubcaps. The Super 90 and Carrera were given a compensating spring on the rear axle to reduce oversteer and counteract the rear of the car breaking out when cornering quickly. It was a single leaf spring that supported itself in the middle against the differential and both ends of which were attached to the axle tubes via tie rods and rubber elements.