On all the IVP 's I've flown all have the same issue with the main gear vibrating quite badly when you brake to turn while taxiing. We recently removed the high energy Cleveland brakes and installed a set of Matco multiple disk brakes. Absolutely no vibration with the Matco's and they have better stopping power. Only draw back is they don't disipate heat very well as they are internal to the wheel. Three stop and goes produces enough heat to melts the resin attaching the pads to thier disks. So don't do multiple stop and goes.

Barney Britton