diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9cec140..fe01248 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 The changelog lists relevant feature changes between each release. Search GitHub issues and pull requests for smaller issues.
 
+## 2025-08-20
+- add converter for `share_birrer_ch` feed: correct form_factor and propulsion_type
+
 ## 2025-06-25:
 - add converter for bolt feeds: remove all bicycle entries
   - note: if future bolt feeds contain bicycles, the bicycle entries must be added again
diff --git a/app/converters/gbfs_https_to_http.py b/app/converters/gbfs_https_to_http.py
index db508d1..4589ddd 100644
--- a/app/converters/gbfs_https_to_http.py
+++ b/app/converters/gbfs_https_to_http.py
@@ -22,6 +22,8 @@ class GbfsHttpsToHttpConverter(BaseConverter):
         'gbfs.api.ridedott.com',
         'zeus.city',
         'yoio.rideatom.com',
+        'www.share-birrer.ch',
+        'auto-birrer.ch',
     ]
 
     def convert(self, data: Union[dict, list], path: str) -> Union[dict, list]:
diff --git a/app/converters/gbfs_set_ttl.py b/app/converters/gbfs_set_ttl.py
index 1e2e806..dbb6935 100644
--- a/app/converters/gbfs_set_ttl.py
+++ b/app/converters/gbfs_set_ttl.py
@@ -14,6 +14,8 @@ class GbfsSetTtlConverter(BaseConverter):
         'gbfs.prod.sharedmobility.ch',
         'api.voiapp.io',
         'gbfs.api.ridedott.com',
+        'www.share-birrer.ch',
+        'auto-birrer.ch',
     ]
 
     def convert(self, data: Union[dict, list], path: str) -> Union[dict, list]:
diff --git a/app/converters/gbfs_share_birrer_adjust_bicycle.py b/app/converters/gbfs_share_birrer_adjust_bicycle.py
new file mode 100644
index 0000000..9c1f2aa
--- /dev/null
+++ b/app/converters/gbfs_share_birrer_adjust_bicycle.py
@@ -0,0 +1,36 @@
+from typing import Union
+
+from app.base_converter import BaseConverter
+
+BICYCLE_ELECTRIC_MAX_RANGE_METERS = 60000
+
+
+class GbfsShareBirrerAdjustBicycleConverter(BaseConverter):
+    """
+    share_birrer_ch uses invalid form_factor 'bike'
+    """
+
+    hostnames = ['www.share-birrer.ch', 'auto-birrer.ch']
+
+    def convert(self, data: Union[dict, list], path: str) -> Union[dict, list]:
+        if not isinstance(data, dict):
+            return data
+
+        if path.endswith('/vehicle_types'):
+            fields = data.get('data')
+            if not isinstance(fields, dict):
+                return data
+            vehicle_types = fields.get('vehicle_types')
+            if not isinstance(vehicle_types, list):
+                return data
+            for vehicle_type in vehicle_types:
+                if vehicle_type.get('form_factor') == 'bike':
+                    vehicle_type['form_factor'] = 'bicycle'
+                    vehicle_type['propulsion_type'] = 'electric'
+                    vehicle_type['max_range_meters'] = BICYCLE_ELECTRIC_MAX_RANGE_METERS
+                    vehicle_type['return_constraint'] = 'any_station'  # currently, there is only one station for bicycles
+                if vehicle_type.get('propulsion_type') == 'hydrogen':
+                    vehicle_type['propulsion_type'] = 'electric'  # hydrogen_fuel_cell is not available in 2.2
+            return data
+
+        return data
diff --git a/config_dist_dev.yaml b/config_dist_dev.yaml
index 1a08ca5..a08b4d7 100644
--- a/config_dist_dev.yaml
+++ b/config_dist_dev.yaml
@@ -11,3 +11,5 @@ HTTP_TO_HTTPS_HOSTS:
   - gbfs.api.ridedott.com
   - zeus.city
   - yoio.rideatom.com
+  - www.share-birrer.ch
+  - auto-birrer.ch