I have Dunlop tyres all round, maybe the ride is too harsh with these tyres on 33 psi.I can feel every bump on the road especially in town.on 29.5 psi the ride gets settled and only the worst bumps cause some noise in the cabin.Rayaans I will try on 37 psi.Have you got Dunlop tyres as well.How is your mpg.
Read in a blog that Michelin tyres are quiet and improves ride quality of Rx.
Hcimc you could try lowering tyre pressure to 29.5 psi and see if it makes the ride comfortable in your Rx.