14k/10k, people compliment how smooth my F is. its almost too smooth. i'll be getting 16/12 myself because of the next stage of my car.

 

Thank you, thats exactly what I want to hear

 

Seems like KW is your best comfort option. Hks suspension on the isf hyper max 4 is a claimed luxury coilover kit.

 

Mine is '08
I did springs initially, ride didn't improve
I then did 16/12 BC's, wasn't entirely happy. Some improvement over springs but not great.
Finally did KW V3 and it was night and day over BC. Should have gone KW from the start. Ride is MUCH smoother than stock and rebound improvement is especially evident over the other setups.

Just my experience, based on wasting a lot of time and money!

 

I recently had the 2013 shocks and springs put on my 2008. The ride is still very firm, but noticeably better.

I know KW makes a Street Comfort line of coilovers, might be the best for a comfortable ride, but I'm not sure if they offer them for the IS-F.

 

LOL I came to the ISFfrom an LS460. I know the car rides pretty relatively stiff but you will adapt and get used to it......then again I live in AZ with glass smooth roads . The first month I had the car I would just laugh at the bumpiness. It made the car feel serious but yeah it rides like ****.

Id suggest stick with Michelins and dont drop the car. Its going to ride like ****. If you put coil overs on it and soften it the car will handle like crap. Its the nature of the beast....literally. Id just put some PSS on and give it time