Studying the P47's dive performance in DCS, I noticed how it's easy to damage the engine bearings if you windmill the prop at high speed. Doing some research, I discovered that all radial engines are prone to this type of damage.
If, because of insufficient gas load (manifold pressure), the propeller is allowed to drive the engine, the resultant force on the crankshaft is applied to the opposite side of the crankpin, where the oil supply is not optimised, and may quickly damage the bearing. This damage worsens over time and eventually the bearing will fail. Failure may occur several hours after the initiating event, and therefore a pilot may inadvertently damage the bearing without seeing any immediate symptoms requiring maintenance intervention. The engine is designed to cope with some reverse loading for brief periods, for example when the propeller is driven at lower airspeed when landing, but critical damage may occur quickly at higher speeds
Source: AAIB Bulletin: 10/2021 / G-INVN / AAIB-26839 (PDF)
I can't understand at 100% why V, Inline , boxer ecc.. engines don't suffer of this problem too. Probably the reason is due the load distribution that's completely different, but not sure.