whats the diff??
The NT555R is a D.O.T. - approved competition drag radial designed for maximum flexibility. You can drive your car to the strip and launch with extreme grip down the track - all without changing your tires. The NT555R features a high grip compound and a large contact patch for dry handling. The specially formulated soft racing compound is molded at 6/32 of an inch to provide improved traction. With grip and control, the NT555R is the perfect performance radial for the street or strip.
The NT555RII is a D.O.T. - approved competition radial, designed with the road racer in mind. The NT555RII is designed to help you get the power from your muscle car transferred to the ground quickly and effectively. Steel sidewall inserts keep the sidewall rigid even under extreme lateral acceleration. Additional construction modifications were made to improve cornering feedback, controllability and stability to ensure your performance goals are met in the most demanding competition conditions.
Those are the only tires Nitto lists on thier site in the "NT555" line . . . .
The NT555R is a D.O.T. - approved competition drag radial designed for maximum flexibility. You can drive your car to the strip and launch with extreme grip down the track - all without changing your tires. The NT555R features a high grip compound and a large contact patch for dry handling. The specially formulated soft racing compound is molded at 6/32 of an inch to provide improved traction. With grip and control, the NT555R is the perfect performance radial for the street or strip.
The NT555RII is a D.O.T. - approved competition radial, designed with the road racer in mind. The NT555RII is designed to help you get the power from your muscle car transferred to the ground quickly and effectively. Steel sidewall inserts keep the sidewall rigid even under extreme lateral acceleration. Additional construction modifications were made to improve cornering feedback, controllability and stability to ensure your performance goals are met in the most demanding competition conditions.
Those are the only tires Nitto lists on thier site in the "NT555" line . . . .

