Get distance covered by a wheel using a gyroscope placed on it
Your gyro isn't giving degrees per second. The total plot is over 13 seconds duration, at an average of about 4 degrees per second, that's about 52° total, but the wheel circumference is only just over 1 metre. I think it is giving radians per second, 52 radians is about 8.3 full rotations, which will give you the right answer.