By the way if you feel that the ride is rough, you may want to check if the spacers have been removed. There have been a lot of complaints about the rough ride until they found out that the spacers have not been removed. These spacers are installed so as not to damage/scrape the underside during the shipping process. This applies to the Nismo 370Z models. Search for the sticky under Nismo owners.
Nismo Z Suspension: All Nismo 370Z Owners Check Here FIRST!