diff --git a/selfdrive/car/chrysler/interface.py b/selfdrive/car/chrysler/interface.py
index f4881dd363..6112ded880 100755
--- a/selfdrive/car/chrysler/interface.py
+++ b/selfdrive/car/chrysler/interface.py
@@ -91,7 +91,6 @@ class CarInterface(CarInterfaceBase):
 
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_cam)
-    self.sp_update_params()
 
     self.CS.button_events.extend(create_button_events(self.CS.distance_button, self.CS.prev_distance_button, {1: ButtonType.gapAdjustCruise}))
     self.CS.button_events.extend(create_button_events(self.CS.lkas_enabled, self.CS.prev_lkas_enabled, {1: ButtonType.altButton1}))
diff --git a/selfdrive/car/ford/interface.py b/selfdrive/car/ford/interface.py
index b0a1c15f34..7d8d5754e3 100644
--- a/selfdrive/car/ford/interface.py
+++ b/selfdrive/car/ford/interface.py
@@ -72,7 +72,6 @@ class CarInterface(CarInterfaceBase):
 
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_cam)
-    self.sp_update_params()
 
     self.CS.button_events.extend(create_button_events(self.CS.distance_button, self.CS.prev_distance_button, {1: ButtonType.gapAdjustCruise}))
     self.CS.button_events.extend(create_button_events(self.CS.lkas_enabled, self.CS.prev_lkas_enabled, {1: ButtonType.altButton1}))
diff --git a/selfdrive/car/gm/interface.py b/selfdrive/car/gm/interface.py
index 4a1e459722..9bba662906 100755
--- a/selfdrive/car/gm/interface.py
+++ b/selfdrive/car/gm/interface.py
@@ -204,7 +204,6 @@ class CarInterface(CarInterfaceBase):
   # returns a car.CarState
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_cam, self.cp_loopback)
-    self.sp_update_params()
 
     distance_button = 0
 
diff --git a/selfdrive/car/honda/interface.py b/selfdrive/car/honda/interface.py
index af294a63a7..70124a8892 100755
--- a/selfdrive/car/honda/interface.py
+++ b/selfdrive/car/honda/interface.py
@@ -266,7 +266,6 @@ class CarInterface(CarInterfaceBase):
   # returns a car.CarState
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_cam, self.cp_body)
-    self.sp_update_params()
 
     self.CS.button_events = [
       *create_button_events(self.CS.cruise_buttons, self.CS.prev_cruise_buttons, BUTTONS_DICT),
diff --git a/selfdrive/car/hyundai/interface.py b/selfdrive/car/hyundai/interface.py
index 72a12b0ba8..f0d0154d69 100644
--- a/selfdrive/car/hyundai/interface.py
+++ b/selfdrive/car/hyundai/interface.py
@@ -203,7 +203,6 @@ class CarInterface(CarInterfaceBase):
 
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_cam)
-    self.sp_update_params()
 
     self.CS.button_events.extend(create_button_events(self.CS.cruise_buttons[-1], self.CS.prev_cruise_buttons, BUTTONS_DICT))
     self.CS.button_events.extend(create_button_events(self.CS.lfa_enabled, self.CS.prev_lfa_enabled, {1: ButtonType.altButton1}))
diff --git a/selfdrive/car/interfaces.py b/selfdrive/car/interfaces.py
index b8ca13ec86..0a88762e57 100644
--- a/selfdrive/car/interfaces.py
+++ b/selfdrive/car/interfaces.py
@@ -239,16 +239,10 @@ class CarInterfaceBase(ABC):
     self.gear_warning = 0
     self.cruise_cancelled_btn = True
     self.acc_mads_combo = self.param_s.get_bool("AccMadsCombo")
-    self.is_metric = self.param_s.get_bool("IsMetric")
-    self.below_speed_pause = self.param_s.get_bool("BelowSpeedPause")
-    self.pause_lateral_speed = int(self.param_s.get("PauseLateralSpeed", encoding="utf8"))
     self.prev_acc_mads_combo = False
     self.mads_event_lock = True
     self.gap_button_counter = 0
     self.experimental_mode_hold = False
-    self.experimental_mode = self.param_s.get_bool("ExperimentalMode")
-    self._frame = 0
-    self.reverse_dm_cam = self.param_s.get_bool("ReverseDmCam")
     self.mads_main_toggle = self.param_s.get_bool("MadsCruiseMain")
     self.lkas_toggle = self.param_s.get_bool("LkasToggle")
     self.last_mads_init = 0.
@@ -429,6 +423,8 @@ class CarInterfaceBase(ABC):
 
     self.CS.button_events = []
 
+    self.CS.sp_update_params()
+
     # get CarState
     ret = self._update(c)
 
@@ -472,7 +468,7 @@ class CarInterfaceBase(ABC):
       else:
         events.add(EventName.wrongGear)
     if cs_out.gearShifter == GearShifter.reverse:
-      if not self.reverse_dm_cam and cs_out.vEgo < 5:
+      if not self.CS.reverse_dm_cam and cs_out.vEgo < 5:
         events.add(EventName.spReverseGear)
       elif cs_out.vEgo >= 5:
         events.add(EventName.reverseGear)
@@ -634,9 +630,9 @@ class CarInterfaceBase(ABC):
     if self.CP.openpilotLongitudinalControl:
       self.toggle_exp_mode(gap_button)
 
-    lane_change_speed_min = get_min_lateral_speed(self.pause_lateral_speed, self.is_metric)
+    lane_change_speed_min = get_min_lateral_speed(self.CS.pause_lateral_speed, self.CS.sp_is_metric)
 
-    cs_out.belowLaneChangeSpeed = cs_out.vEgo < lane_change_speed_min and self.below_speed_pause
+    cs_out.belowLaneChangeSpeed = cs_out.vEgo < lane_change_speed_min and self.CS.below_speed_pause
 
     if cs_out.gearShifter in [GearShifter.park, GearShifter.reverse] or cs_out.doorOpen or \
       (cs_out.seatbeltUnlatched and cs_out.gearShifter != GearShifter.park):
@@ -669,7 +665,7 @@ class CarInterfaceBase(ABC):
         if self.gap_button_counter > 50:
           self.gap_button_counter = 0
           self.experimental_mode_hold = True
-          self.param_s.put_bool_nonblocking("ExperimentalMode", not self.experimental_mode)
+          self.param_s.put_bool_nonblocking("ExperimentalMode", not self.CS.experimental_mode)
     else:
       self.gap_button_counter = 0
       self.experimental_mode_hold = False
@@ -735,17 +731,6 @@ class CarInterfaceBase(ABC):
 
     return events, cs_out
 
-  def sp_update_params(self):
-    self.experimental_mode = self.param_s.get_bool("ExperimentalMode")
-    self._frame += 1
-    if self._frame % 100 == 0:
-      self.is_metric = self.param_s.get_bool("IsMetric")
-      self.below_speed_pause = self.param_s.get_bool("BelowSpeedPause")
-      self.pause_lateral_speed = int(self.param_s.get("PauseLateralSpeed", encoding="utf8"))
-    if self._frame % 300 == 0:
-      self._frame = 0
-      self.reverse_dm_cam = self.param_s.get_bool("ReverseDmCam")
-
 class RadarInterfaceBase(ABC):
   def __init__(self, CP):
     self.rcp = None
@@ -786,6 +771,13 @@ class CarStateBase(ABC):
 
     self.button_events: list[capnp.lib.capnp._DynamicStructBuilder] = []
 
+    self._frame = 0
+    self.experimental_mode = self.param_s.get_bool("ExperimentalMode")
+    self.sp_is_metric = self.param_s.get_bool("IsMetric")
+    self.below_speed_pause = self.param_s.get_bool("BelowSpeedPause")
+    self.pause_lateral_speed = int(self.param_s.get("PauseLateralSpeed", encoding="utf8"))
+    self.reverse_dm_cam = self.param_s.get_bool("ReverseDmCam")
+
     Q = [[0.0, 0.0], [0.0, 100.0]]
     R = 0.3
     A = [[1.0, DT_CTRL], [0.0, 1.0]]
@@ -848,6 +840,17 @@ class CarStateBase(ABC):
 
     return bool(left_blinker_stalk or self.left_blinker_cnt > 0), bool(right_blinker_stalk or self.right_blinker_cnt > 0)
 
+  def sp_update_params(self):
+    self.experimental_mode = self.param_s.get_bool("ExperimentalMode")
+    self._frame += 1
+    if self._frame % 100 == 0:
+      self.sp_is_metric = self.param_s.get_bool("IsMetric")
+      self.below_speed_pause = self.param_s.get_bool("BelowSpeedPause")
+      self.pause_lateral_speed = int(self.param_s.get("PauseLateralSpeed", encoding="utf8"))
+    if self._frame % 300 == 0:
+      self._frame = 0
+      self.reverse_dm_cam = self.param_s.get_bool("ReverseDmCam")
+
   def update_custom_stock_long(self, cruise_button, final_speed_kph, target_speed, v_set_dis, speed_diff, button_type):
     customStockLong = car.CarState.CustomStockLong.new_message()
     customStockLong.cruiseButton = 0 if cruise_button is None else cruise_button
diff --git a/selfdrive/car/mazda/interface.py b/selfdrive/car/mazda/interface.py
index 2bd4f71c78..7b9c6120ec 100755
--- a/selfdrive/car/mazda/interface.py
+++ b/selfdrive/car/mazda/interface.py
@@ -37,7 +37,6 @@ class CarInterface(CarInterfaceBase):
   # returns a car.CarState
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_cam)
-    self.sp_update_params()
 
     # TODO: add button types for inc and dec
     self.CS.button_events.extend(create_button_events(self.CS.distance_button, self.CS.prev_distance_button, {1: ButtonType.gapAdjustCruise}))
diff --git a/selfdrive/car/nissan/interface.py b/selfdrive/car/nissan/interface.py
index 4a9e5a9125..661ac668a5 100644
--- a/selfdrive/car/nissan/interface.py
+++ b/selfdrive/car/nissan/interface.py
@@ -32,7 +32,6 @@ class CarInterface(CarInterfaceBase):
   # returns a car.CarState
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_adas, self.cp_cam)
-    self.sp_update_params()
 
     self.CS.button_events = create_button_events(self.CS.distance_button, self.CS.prev_distance_button, {1: ButtonType.gapAdjustCruise})
 
diff --git a/selfdrive/car/subaru/interface.py b/selfdrive/car/subaru/interface.py
index 7eefeb66eb..185ee8e54d 100644
--- a/selfdrive/car/subaru/interface.py
+++ b/selfdrive/car/subaru/interface.py
@@ -116,7 +116,6 @@ class CarInterface(CarInterfaceBase):
   def _update(self, c):
 
     ret = self.CS.update(self.cp, self.cp_cam, self.cp_body)
-    self.sp_update_params()
 
     self.CS.mads_enabled = self.get_sp_cruise_main_state(ret, self.CS)
 
diff --git a/selfdrive/car/toyota/interface.py b/selfdrive/car/toyota/interface.py
index 1b0528d12c..5214cc1265 100644
--- a/selfdrive/car/toyota/interface.py
+++ b/selfdrive/car/toyota/interface.py
@@ -207,7 +207,6 @@ class CarInterface(CarInterfaceBase):
   # returns a car.CarState
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_cam)
-    self.sp_update_params()
 
     distance_button = 0
 
diff --git a/selfdrive/car/volkswagen/interface.py b/selfdrive/car/volkswagen/interface.py
index d965cf2e8b..0d57539a1b 100644
--- a/selfdrive/car/volkswagen/interface.py
+++ b/selfdrive/car/volkswagen/interface.py
@@ -113,7 +113,6 @@ class CarInterface(CarInterfaceBase):
   # returns a car.CarState
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_cam, self.cp_ext, self.CP.transmissionType)
-    self.sp_update_params()
 
     self.CS.mads_enabled = self.get_sp_cruise_main_state(ret, self.CS)