Which Kumhos do you have? I have the 712 Estca Supras... I like them. Fair dry traction and good water traction. If money was no option i would buy Firestone SZ50 EPs. Those tires are like drag radials that can take corners and handle in the rain.
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96 M6 Arctic White Z28
"SLOW LT1"
Blue 2005 Acura TSX