The modeling of dynamic contact forces between a tire tread and a road surface is an essential input for the prediction of absolute tire/road noise levels. Here, an original approach called the Two-scale Iterative Method (TIM) is presented for the analytical prediction of the contact force distribution between a rough road surface and a tire. It is based on an approximate relation between the normal contact force and the relative displacement at the tip of each punch, on which a contact law is known analytically or calculated numerically. The relation takes into account the interacting effect between the punches. Then pressure distribution on each individual punch can be calculated by traditional numerical methods at a local scale. The calculation is much faster than other existing methods, and real 3D contact patches with a large number of asperities can be calculated. An experimental validation is performed using a digital pressure sensing device (Tekscan©). Static contact pressure distributions are measured and simulated for a slick tire on eight different road surfaces. A fair agreement is obtained between measurements and calculation of contact area, mean pressure and pressure distribution in the contact patch. Thus, the use of this model for tire-road noise modeling is very encouraging.