Koni Test Drive Z Owner Ian Stewart’s Impressions

“Hello everyone, my 260Z was used as the test vehicle for the new Koni struts. The car was the perfect candidate as I had already rebuilt the suspension with new ball joints, Urethane bushings throughout (both front and rear), stiffer springs and Illumina struts. The only change that was made for the testing was replacing the Illumina’s with the Koni’s.

The Koni’s are an improvement over the Illumina’s in my opinion. You need to get used to not having a way to tell where you are at as the Koni does not have an indicator, but the adjustment range is much wider and you can really feel the difference when you make a change. I never really noticed differences when I adjusted the Tokico’s, whereas I can definitely feel the difference when I adjust the Koni’s. My car is fitted with 160in-lb front and 180in-lb rear springs that lower it about 1.5 inches from stock. Note that these spring rates are similar to most aftermarket spring sets for Z-Cars, at roughly 2X stiffer than stock springs. At full stiff on the Koni adjustment the car is too harsh, but at full soft, it is comfortable (to me) for street use, I like the ride. I have not auto-crossed the car yet, but expect the full stiff setting will work very well.”

Ian Stewart.