Profile, weight, ideal pressure and all other characteristics have remained the same. But not the driving behavior. We've done everything on more than 200km of intense test drives to get the Schwalbe Jumbo Jim Addix out of the serenity. Can not be so difficult! But he can not only do everything better than his hundredfold predecessors. He can even do it really well! Whether the hard, dry surfaces, wet roots or mud - where the former Jumbo Jim was quickly overburdened, the new tire shows a top performance. He grabs greedily and transfers steering and braking commands reliably to the ground. In particular, the handling on slippery floors has improved considerably - and exactly where FATBICs need it most. The new roller also rolls as lightly as you know it from the Jumbo Jim. And he also remains exemplary in the subject of auto- moting: there is no pressure to be felt with sufficient pressure.