That makes sense, thanks for this deeper explanation!
Originally Posted by CooperMan
The problem with the OE solution of limiting suspension travel by fitting a chunk of rubber under the 'hoop' for the Differential casing to hit is flawed from the off...
The hard rubber pad is not progressive (it was not even fitted during build on my previous S1 Roadster) As we all know the axle is highly unlikely to travel an equal amount each side as it hits a bump, ie stay horizontal So, in real world driving, by the time the hoop bumpstop limits travel, the wheel travelling up into the arch will be allowed to go too far up hence the witness marks in peoples photos This also concentrates much more load onto one sides leaf spring & shock absorber (I have seen shocks bust the internals as they bottom out)
Rogers solution addresses this by being both progressive and limiting travel independently at each end of the Diff
