The tires are a bit fragile. You are playing a ride vs comfort game. If you want comfort, you lower the tire pressure to the lowest spec, and then your rims are at risk. It may be a good idea for you to switch to the smaller wheels, where the tires have a taller profile and thus more compliance. I'm hardly a fan of Bentley Motors, but, with tires rated for over 200mph, and the resultant high tire pressures and low profile, one either sacrifices ride or comfort. I've taken to keeping mine at exactly the highest advised pressure for full speed running.