e46 320d 03my strange noise/ resonance 65mph

[crossroadsg]

My 03 plate 320d has a strange noise/resonance at or around 65-70mph, seems to emanate from nearside of vehicle can be driven through but obviously at motorway limit is very annoying, have checked tyres,wheel balance,propshaft front and rear suspension etc but found no fault is not a wheel bearing noise sounds like when tyres run over rumble strip but has no heavy vibration. Any help appreciated!!