Dont have a vert or a 128 but my car with these run flats is a rough riding beast. My Z51(stiffer, sport susension) Corvette is Caddy smooth in comparison. Im thinking like you, the vert with the run flats is the issue. Theres no give in them and they make for alot of jolting and jossling. Im thinking of replacing mine and only 5K miles on em.
Last edited by NYC6; 08-19-2010 at 02:33 PM..
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