diff --git a/server/test_mode.py b/server/test_mode.py
index 982eb53..2167e32 100644
--- a/server/test_mode.py
+++ b/server/test_mode.py
@@ -87,9 +87,9 @@ class TestDataGenerator:
         struct.pack_into("<f", buf, 244, random.uniform(-5000, 5000))
         struct.pack_into("<f", buf, 248, random.uniform(-50, 50))
         struct.pack_into("<f", buf, 252, random.uniform(-5000, 5000))
-        struct.pack_into("<f", buf, 20, steering * 9.81 * 2)   # lateral G
-        struct.pack_into("<f", buf, 24, 0.0)
-        struct.pack_into("<f", buf, 28, (throttle - brake) * 9.81 * 2)  # longitudinal G
+        struct.pack_into("<f", buf, 20, (steering * 9.81 * 2.5) + random.uniform(-1.2, 1.2))   # lateral G + jitter
+        struct.pack_into("<f", buf, 24, random.uniform(-0.5, 0.5))  # vertical bounce
+        struct.pack_into("<f", buf, 28, ((throttle - brake) * 9.81 * 2) + random.uniform(-1.5, 1.5))  # longitudinal G + jitter
         struct.pack_into("<f", buf, 256, speed_mps)
         struct.pack_into("<f", buf, 260, hp * 745.7)
         struct.pack_into("<f", buf, 264, torque)