yangxbo0

I dropped off my 500H at dealer and got a loaner RX350, noticed that RX is quieter than my TX 500H on the same road and highway. Does RX have better noise isolation or active noise cancellation than TX? Or just because TX has a bigger cabin and larger wheels? Is there a way to adjust its active noise control by ourselves?

mhoran89

this could be any number of things. the TX has more glass than the RX and glass is more noisy than the rest of the car. larger wheels ride differently, but a lot of it also may have to due with the actual tread and brand of tire.

as far as I know there is no way to adjust the active noise cancelation in the TX, but I have only played around with the menus and also carista which is somewhat limited.

yangxbo0

Thanks! I do feel that the road noise pitch is quite different between TX 500H and the RX, the tire tread is definitely one of the factors. it is louder for sure but still much quieter than most of other cars.

sheetmetalfab

Is the noise difference hybrid to non hybrid?

yangxbo0

Hybrid is a little more quieter than non-hybrid when starting from stop, at high speed they are almost the same. I think TX is a little louder than RX is due to having more glass panels.