diff --git a/client/src/components/Admin/DefaultUserSettingsTab.test.tsx b/client/src/components/Admin/DefaultUserSettingsTab.test.tsx
index e52b0160b..d6b3b84d5 100644
--- a/client/src/components/Admin/DefaultUserSettingsTab.test.tsx
+++ b/client/src/components/Admin/DefaultUserSettingsTab.test.tsx
@@ -1,4 +1,4 @@
-// FE-ADMIN-DUS-001 to FE-ADMIN-DUS-028
+// FE-ADMIN-DUS-001 to FE-ADMIN-DUS-029
 import { render, screen, waitFor, within, fireEvent } from '../../../tests/helpers/render';
 import userEvent from '@testing-library/user-event';
 import { http, HttpResponse } from 'msw';
@@ -6,6 +6,7 @@ import { server } from '../../../tests/helpers/msw/server';
 import { resetAllStores, seedStore } from '../../../tests/helpers/store';
 import { buildAdmin } from '../../../tests/helpers/factories';
 import { useAuthStore } from '../../store/authStore';
+import { AMAP_ROAD } from '../../constants/mapDefaults';
 import { ToastContainer } from '../shared/Toast';
 import DefaultUserSettingsTab from './DefaultUserSettingsTab';
 
@@ -220,6 +221,18 @@ describe('DefaultUserSettingsTab', () => {
     expect(screen.getByTestId('map-preview')).toHaveAttribute('data-tile', url);
   });
 
+  it('FE-ADMIN-DUS-029: the Amap presets a user can pick are offered as instance defaults too', async () => {
+    const user = userEvent.setup();
+    const { puts } = stubDefaults();
+    render(<DefaultUserSettingsTab />);
+    await screen.findByText('Default User Settings');
+
+    await pickFromSelect(user, 'Select template...', '高德地图 (Amap)');
+
+    await waitFor(() => expect(puts).toEqual([{ map_tile_url: AMAP_ROAD }]));
+    expect(screen.getByTestId('map-preview')).toHaveAttribute('data-tile', AMAP_ROAD);
+  });
+
   it('FE-ADMIN-DUS-011: a hand-typed tile URL is saved on blur', async () => {
     const user = userEvent.setup();
     const { puts } = stubDefaults();
diff --git a/client/src/components/Admin/DefaultUserSettingsTab.tsx b/client/src/components/Admin/DefaultUserSettingsTab.tsx
index 1a08f61ff..c4038d99d 100644
--- a/client/src/components/Admin/DefaultUserSettingsTab.tsx
+++ b/client/src/components/Admin/DefaultUserSettingsTab.tsx
@@ -12,7 +12,7 @@ import type { DistanceUnit, WeekStart } from '../../types'
 import { weekStartOptions } from '../../utils/calendarWeek'
 import { withTileApiKey } from '../../utils/tileUrl'
 import { defaultStyleForProvider } from '../Map/glProviders'
-import { DEFAULT_MAP_PRESETS as MAP_PRESETS, type MapProvider } from '../Settings/mapSettingsModel'
+import { MAP_PRESETS, type MapProvider } from '../Settings/mapSettingsModel'
 import RoutingInstanceFields from './RoutingInstanceFields'
 import { useDefaultUserSettings, type Defaults } from './useDefaultUserSettings'
 
diff --git a/client/src/components/Settings/mapSettingsModel.ts b/client/src/components/Settings/mapSettingsModel.ts
index 1f1a9aac9..b75cf2a43 100644
--- a/client/src/components/Settings/mapSettingsModel.ts
+++ b/client/src/components/Settings/mapSettingsModel.ts
@@ -18,8 +18,11 @@ export interface MapPreset {
   url: string;
 }
 
-/** The tile presets an admin can make the default for every user. */
-export const DEFAULT_MAP_PRESETS: MapPreset[] = [
+/**
+ * The tile presets a user picks from in their own map settings, and the same list
+ * an admin picks the default for every user from.
+ */
+export const MAP_PRESETS: MapPreset[] = [
   { name: 'OpenStreetMap', url: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png' },
   { name: 'OpenStreetMap DE', url: 'https://tile.openstreetmap.de/{z}/{x}/{y}.png' },
   // The app default, and a vector style rather than a {z}/{x}/{y} template: no
@@ -31,11 +34,6 @@ export const DEFAULT_MAP_PRESETS: MapPreset[] = [
   { name: 'CartoDB Light', url: 'https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}{r}.png' },
   { name: 'CartoDB Dark', url: 'https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png' },
   { name: 'Stadia Smooth', url: 'https://tiles.stadiamaps.com/tiles/alidade_smooth/{z}/{x}/{y}{r}.png' },
-];
-
-/** The tile presets a user picks from in their own map settings. */
-export const MAP_PRESETS: MapPreset[] = [
-  ...DEFAULT_MAP_PRESETS,
   // Amap (高德). GCJ-02 tiles: the map switches to a shifted projection for
   // these so markers still land on the right street (see gcj02Crs.ts). The only
   // basemap here that is genuinely good inside mainland China.
diff --git a/client/src/components/Settings/useMapSettingsForm.test.ts b/client/src/components/Settings/useMapSettingsForm.test.ts
index 3ffd5204b..8ba662614 100644
--- a/client/src/components/Settings/useMapSettingsForm.test.ts
+++ b/client/src/components/Settings/useMapSettingsForm.test.ts
@@ -3,18 +3,12 @@ import { act, renderHook } from '@testing-library/react';
 
 import { buildSettings } from '../../../tests/helpers/factories';
 import { resetAllStores, seedStore } from '../../../tests/helpers/store';
+import { AMAP_ROAD, AMAP_SATELLITE } from '../../constants/mapDefaults';
 import { useAuthStore } from '../../store/authStore';
 import { useSettingsStore } from '../../store/settingsStore';
 import type { Settings } from '../../types';
 import { MAPBOX_DEFAULT_STYLE, OPENFREEMAP_DEFAULT_STYLE } from '../Map/glProviders';
-import {
-  DEFAULT_MAP_PRESETS,
-  MAP_PRESETS,
-  PREVIEW_CENTER,
-  normalizeProvider,
-  slotStyle,
-  styleForProvider,
-} from './mapSettingsModel';
+import { MAP_PRESETS, PREVIEW_CENTER, normalizeProvider, slotStyle, styleForProvider } from './mapSettingsModel';
 import { useMapSettingsForm } from './useMapSettingsForm';
 
 const toast = vi.hoisted(() => ({ success: vi.fn(), error: vi.fn() }));
@@ -36,10 +30,9 @@ beforeEach(() => {
 });
 
 describe('mapSettingsModel', () => {
-  it('FE-COMP-MAPFORM-001: the user list adds the two Amap presets to the admin list', () => {
-    expect(MAP_PRESETS.slice(0, DEFAULT_MAP_PRESETS.length)).toEqual(DEFAULT_MAP_PRESETS);
-    expect(DEFAULT_MAP_PRESETS).toHaveLength(7);
+  it('FE-COMP-MAPFORM-001: one preset list, the two Amap presets included, serves users and the admin defaults', () => {
     expect(MAP_PRESETS).toHaveLength(9);
+    expect(MAP_PRESETS.map((p) => p.url)).toEqual(expect.arrayContaining([AMAP_ROAD, AMAP_SATELLITE]));
   });
 
   it('FE-COMP-MAPFORM-002: provider and style rules', () => {
diff --git a/client/src/mobile/screens/admin/MAdminDefaultUserSettings.tsx b/client/src/mobile/screens/admin/MAdminDefaultUserSettings.tsx
index 2c1c2fbfe..0bd99367f 100644
--- a/client/src/mobile/screens/admin/MAdminDefaultUserSettings.tsx
+++ b/client/src/mobile/screens/admin/MAdminDefaultUserSettings.tsx
@@ -7,7 +7,7 @@ import { getApiErrorMessage, type DistanceUnit, type WeekStart } from '../../../
 import { weekStartOptions } from '../../../utils/calendarWeek'
 import { withTileApiKey } from '../../../utils/tileUrl'
 import { defaultStyleForProvider } from '../../../components/Map/glProviders'
-import { DEFAULT_MAP_PRESETS as MAP_PRESETS, type MapProvider } from '../../../components/Settings/mapSettingsModel'
+import { MAP_PRESETS, type MapProvider } from '../../../components/Settings/mapSettingsModel'
 import { useDefaultUserSettings, type Defaults } from '../../../components/Admin/useDefaultUserSettings'
 import MToggle from '../../components/MToggle'
 import MSegmented from '../../components/MSegmented'