wcl77

I recently purchased an 11 ls460 with 19" tires. The car has new Pirelli all season grand touring tires which are highly rated. The car doesn't ride as well as my previous 06 LS460 especially on rough surfaces. I keep air at 35# rather than the door sticker recommended 33# air pressure Any input will be appreciated.

jagtoes

Many factors will make ride firm. Higher tire pressures are one of those. Also the tire design and age. Then there is suspension . Try lowering air pressure and see if it makes a difference.