Hello,

I just purchased a 2013 Lexus GS350 AWD with the navigation package. I am finding that the ride is very firm, compared to the luxury model I test drove.

I my car is equipped with 18in Michellin Primacy Touring tires, I have dropped the tire pressure to 30psi, and i still find it firm my model is not equipped with the adjustable suspension.

Is it possible to add the AVS adjustable dampers on this model?

As well, it is worth downgrading the tire size to 225-50-17?

Thanks

Richard