-// Left real diameter: 0.12808
-#define STEP_PER_M_LEFT 5606.7
-// Right real diameter: 0.121
-#define STEP_PER_M_RIGHT 5934.8
+// Left real diameter: 0.12808, Right real diameter: 0.121
+#define STEP_PER_M 5770.8
+#define STEP_PER_M_LEFT (STEP_PER_M)
+#define STEP_PER_M_RIGHT (STEP_PER_M)