diff --git a/pyproject.toml b/pyproject.toml
index b9a9fcab55..ce763d152d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -259,6 +259,7 @@ lint.flake8-implicit-str-concat.allow-multiline = false
 "tools".msg = "Use openpilot.tools"
 "pytest.main".msg = "pytest.main requires special handling that is easy to mess up!"
 "unittest".msg = "Use pytest"
+"pyray.measure_text_ex".msg = "Use openpilot.system.ui.lib.text_measure"
 
 [tool.coverage.run]
 concurrency = ["multiprocessing", "thread"]
diff --git a/selfdrive/ui/layouts/settings/settings.py b/selfdrive/ui/layouts/settings/settings.py
index b3d28b0adf..1afa4f8f4a 100644
--- a/selfdrive/ui/layouts/settings/settings.py
+++ b/selfdrive/ui/layouts/settings/settings.py
@@ -9,6 +9,7 @@ from openpilot.selfdrive.ui.layouts.settings.software import SoftwareLayout
 from openpilot.selfdrive.ui.layouts.settings.toggles import TogglesLayout
 from openpilot.system.ui.lib.application import gui_app, FontWeight
 from openpilot.system.ui.lib.label import gui_text_box
+from openpilot.system.ui.lib.text_measure import measure_text_cached
 from openpilot.selfdrive.ui.layouts.network import NetworkLayout
 
 # Import individual panels
@@ -97,7 +98,7 @@ class SettingsLayout:
     close_color = CLOSE_BTN_PRESSED if pressed else CLOSE_BTN_COLOR
     rl.draw_rectangle_rounded(close_btn_rect, 1.0, 20, close_color)
 
-    close_text_size = rl.measure_text_ex(self._font_bold, SETTINGS_CLOSE_TEXT, 140, 0)
+    close_text_size = measure_text_cached(self._font_bold, SETTINGS_CLOSE_TEXT, 140)
     close_text_pos = rl.Vector2(
       close_btn_rect.x + (close_btn_rect.width - close_text_size.x) / 2,
       close_btn_rect.y + (close_btn_rect.height - close_text_size.y) / 2,
@@ -124,7 +125,7 @@ class SettingsLayout:
       is_selected = panel_type == self._current_panel
       text_color = TEXT_SELECTED if is_selected else TEXT_NORMAL
       # Draw button text (right-aligned)
-      text_size = rl.measure_text_ex(self._font_medium, panel_info.name, 65, 0)
+      text_size = measure_text_cached(self._font_medium, panel_info.name, 65)
       text_pos = rl.Vector2(
         button_rect.x + button_rect.width - text_size.x, button_rect.y + (button_rect.height - text_size.y) / 2
       )
diff --git a/system/ui/lib/button.py b/system/ui/lib/button.py
index 9ca82c9732..024e360448 100644
--- a/system/ui/lib/button.py
+++ b/system/ui/lib/button.py
@@ -1,6 +1,7 @@
 import pyray as rl
 from enum import IntEnum
 from openpilot.system.ui.lib.application import gui_app, FontWeight
+from openpilot.system.ui.lib.text_measure import measure_text_cached
 
 
 class ButtonStyle(IntEnum):
@@ -99,7 +100,7 @@ def gui_button(
 
   # Handle icon and text positioning
   font = gui_app.font(font_weight)
-  text_size = rl.measure_text_ex(font, text, font_size, 0)
+  text_size = measure_text_cached(font, text, font_size)
   text_pos = rl.Vector2(0, rect.y + (rect.height - text_size.y) // 2)  # Vertical centering
 
   # Draw icon if provided
diff --git a/system/ui/lib/inputbox.py b/system/ui/lib/inputbox.py
index 367e0dc7e4..ae036c03c2 100644
--- a/system/ui/lib/inputbox.py
+++ b/system/ui/lib/inputbox.py
@@ -1,6 +1,7 @@
 import pyray as rl
 import time
 from openpilot.system.ui.lib.application import gui_app
+from openpilot.system.ui.lib.text_measure import measure_text_cached
 
 
 PASSWORD_MASK_CHAR = "•"
@@ -60,7 +61,7 @@ class InputBox:
     padding = 10
 
     if self._cursor_position > 0:
-      cursor_x = rl.measure_text_ex(font, display_text[: self._cursor_position], self._font_size, 0).x
+      cursor_x = measure_text_cached(font, display_text[: self._cursor_position], self._font_size).x
     else:
       cursor_x = 0
 
@@ -141,7 +142,7 @@ class InputBox:
     if self._show_cursor:
       cursor_x = rect.x + padding
       if len(display_text) > 0 and self._cursor_position > 0:
-        cursor_x += rl.measure_text_ex(font, display_text[: self._cursor_position], font_size, 0).x
+        cursor_x += measure_text_cached(font, display_text[: self._cursor_position], font_size).x
 
       # Apply text offset to cursor position
       cursor_x -= self._text_offset
@@ -182,7 +183,7 @@ class InputBox:
         min_distance = float('inf')
 
         for i in range(len(self._input_text) + 1):
-          char_width = rl.measure_text_ex(font, display_text[:i], font_size, 0).x
+          char_width = measure_text_cached(font, display_text[:i], font_size).x
           distance = abs(relative_x - char_width)
           if distance < min_distance:
             min_distance = distance
diff --git a/system/ui/lib/label.py b/system/ui/lib/label.py
index 00a4eda7c6..82533660de 100644
--- a/system/ui/lib/label.py
+++ b/system/ui/lib/label.py
@@ -1,5 +1,6 @@
 import pyray as rl
 from openpilot.system.ui.lib.application import gui_app, FontWeight, DEFAULT_TEXT_SIZE, DEFAULT_TEXT_COLOR
+from openpilot.system.ui.lib.text_measure import measure_text_cached
 from openpilot.system.ui.lib.utils import GuiStyleContext
 
 
@@ -14,7 +15,7 @@ def gui_label(
   elide_right: bool = True
 ):
   font = gui_app.font(font_weight)
-  text_size = rl.measure_text_ex(font, text, font_size, 0)
+  text_size = measure_text_cached(font, text, font_size)
   display_text = text
 
   # Elide text to fit within the rectangle
@@ -24,13 +25,13 @@ def gui_label(
     while left < right:
       mid = (left + right) // 2
       candidate = text[:mid] + ellipsis
-      candidate_size = rl.measure_text_ex(font, candidate, font_size, 0)
+      candidate_size = measure_text_cached(font, candidate, font_size)
       if candidate_size.x <= rect.width:
         left = mid + 1
       else:
         right = mid
     display_text = text[: left - 1] + ellipsis if left > 0 else ellipsis
-    text_size = rl.measure_text_ex(font, display_text, font_size, 0)
+    text_size = measure_text_cached(font, display_text, font_size)
 
   # Calculate horizontal position based on alignment
   text_x = rect.x + {
diff --git a/system/ui/lib/text_measure.py b/system/ui/lib/text_measure.py
index 9cdd566409..c172f94251 100644
--- a/system/ui/lib/text_measure.py
+++ b/system/ui/lib/text_measure.py
@@ -4,10 +4,11 @@ _cache: dict[int, rl.Vector2] = {}
 
 
 def measure_text_cached(font: rl.Font, text: str, font_size: int, spacing: int = 0) -> rl.Vector2:
+  """Caches text measurements to avoid redundant calculations."""
   key = hash((font.texture.id, text, font_size, spacing))
   if key in _cache:
     return _cache[key]
 
-  result = rl.measure_text_ex(font, text, font_size, spacing)
+  result = rl.measure_text_ex(font, text, font_size, spacing)  # noqa: TID251
   _cache[key] = result
   return result
diff --git a/system/ui/spinner.py b/system/ui/spinner.py
index 2af24c4e51..3825f1300d 100755
--- a/system/ui/spinner.py
+++ b/system/ui/spinner.py
@@ -4,6 +4,7 @@ import threading
 import time
 
 from openpilot.system.ui.lib.application import gui_app
+from openpilot.system.ui.lib.text_measure import measure_text_cached
 from openpilot.system.ui.lib.window import BaseWindow
 from openpilot.system.ui.text import wrap_text
 
@@ -78,7 +79,7 @@ class SpinnerRenderer:
       rl.draw_rectangle_rounded(bar, 1, 10, rl.WHITE)
     elif wrapped_lines:
       for i, line in enumerate(wrapped_lines):
-        text_size = rl.measure_text_ex(gui_app.font(), line, FONT_SIZE, 0.0)
+        text_size = measure_text_cached(gui_app.font(), line, FONT_SIZE)
         rl.draw_text_ex(gui_app.font(), line, rl.Vector2(center.x - text_size.x / 2, y_pos + i * LINE_HEIGHT),
                         FONT_SIZE, 0.0, rl.WHITE)
 
diff --git a/system/ui/text.py b/system/ui/text.py
index 82e64d836f..63d00fbde3 100755
--- a/system/ui/text.py
+++ b/system/ui/text.py
@@ -3,6 +3,7 @@ import re
 import time
 import pyray as rl
 from openpilot.system.hardware import HARDWARE, PC
+from openpilot.system.ui.lib.text_measure import measure_text_cached
 from openpilot.system.ui.lib.button import gui_button, ButtonStyle
 from openpilot.system.ui.lib.scroll_panel import GuiScrollPanel
 from openpilot.system.ui.lib.application import gui_app
@@ -33,7 +34,7 @@ def wrap_text(text, font_size, max_width):
     while len(words):
       word = words.pop(0)
       test_line = current_line + word + (words.pop(0) if words else "")
-      if rl.measure_text_ex(font, test_line, font_size, 0).x <= max_width:
+      if measure_text_cached(font, test_line, font_size).x <= max_width:
         current_line = test_line
       else:
         lines.append(current_line)