diff --git a/server/test_mode.py b/server/test_mode.py
index c576246..982eb53 100644
--- a/server/test_mode.py
+++ b/server/test_mode.py
@@ -87,6 +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, 256, speed_mps)
         struct.pack_into("<f", buf, 260, hp * 745.7)
         struct.pack_into("<f", buf, 264, torque)