The 1993 sc 400 weighs 3495 lbs. obviously a little heavier than the v6 sc300
I was planning on the 225/40/18 but if your expertise says otherwise I will go with the 45's
any knowledge of how it might look/feel/rife/handle...also do you recommend z rated tires as a must or will a lower speed rated tire feel close to the same???
thanks for the response...
kent