We adopted Sampling Moire Method to measure the rotating tire sidewall strain when cornering and braking. This method, taken by two separate cameras at the same time the portion attached with grid sheet and analyzed the images can be gained the 3D shape. With this method, we can measure the tire deformed shape and surface strain with practical accuracy. To verify this, we measured two tires with different construction. The two results are clearly different, the measurement method was validated.