Ride quality of 21 inch wheel?

[promtber]

Anyone not happy with the ride quality? Just installed BMW M 310 wheels and it's a totally different ride. Not sure if I totally like it yet. The tires I have are Dunlop Sport Max Run Flat. Maybe it's the tires that are killing the ride. Car feels rougher, louder and and not smoother in handling. But have to love the stability and turning of the car. Any suggestions or comments on your ride?

[Alan l.]

its the RFTs. I have 22" non RFTs and honestly the ride feels better than 20" RFTs.

Alan

[promtber]

What tires do you have? I guess tires in that size are limited.

[lowlevelhell]

Two immutable rules of wheels and tires:
1. Larger wheels will ride more harshly, given a constant rolling circumference.
2. RFTs will ride more harshly than an equivalent Non-RFT.