diff --git a/chart/questions.yml b/chart/questions.yml
index 62f8ab1..a8ffc22 100644
--- a/chart/questions.yml
+++ b/chart/questions.yml
@@ -436,6 +436,13 @@ Warning: This option works only when there is a failed replica in the volume. An
     type: int
     min: 0
     default: 0
+  - variable: defaultSettings.backingImageCleanupWaitInterval
+    label: Backing Image Cleanup Wait Interval
+    description: "This interval in minutes determines how long Longhorn will wait before cleaning up the backing image file when there is no replica in the disk using it."
+    group: "Longhorn Default Settings"
+    type: int
+    min: 0
+    default: 60
 - variable: persistence.defaultClass
   default: "true"
   description: "Set as default StorageClass for Longhorn"
diff --git a/chart/templates/clusterrole.yaml b/chart/templates/clusterrole.yaml
index c697617..e4cd89f 100644
--- a/chart/templates/clusterrole.yaml
+++ b/chart/templates/clusterrole.yaml
@@ -37,7 +37,7 @@ rules:
 - apiGroups: ["longhorn.io"]
   resources: ["volumes", "volumes/status", "engines", "engines/status", "replicas", "replicas/status", "settings",
               "engineimages", "engineimages/status", "nodes", "nodes/status", "instancemanagers", "instancemanagers/status",
-              "sharemanagers", "sharemanagers/status"]
+              "sharemanagers", "sharemanagers/status", "backingimages", "backingimages/status"]
   verbs: ["*"]
 - apiGroups: ["coordination.k8s.io"]
   resources: ["leases"]
diff --git a/chart/templates/default-setting.yaml b/chart/templates/default-setting.yaml
index 6827133..ef4e26c 100644
--- a/chart/templates/default-setting.yaml
+++ b/chart/templates/default-setting.yaml
@@ -37,3 +37,4 @@ data:
     allow-volume-creation-with-degraded-availability: {{ .Values.defaultSettings.allowVolumeCreationWithDegradedAvailability }}
     auto-cleanup-system-generated-snapshot: {{ .Values.defaultSettings.autoCleanupSystemGeneratedSnapshot }}
     concurrent-automatic-engine-upgrade-per-node-limit: {{ .Values.defaultSettings.concurrentAutomaticEngineUpgradePerNodeLimit }}
+    backing-image-cleanup-wait-interval: {{ .Values.defaultSettings.backingImageCleanupWaitInterval }}
diff --git a/chart/values.yaml b/chart/values.yaml
index 44712cf..e2104c9 100644
--- a/chart/values.yaml
+++ b/chart/values.yaml
@@ -95,6 +95,7 @@ defaultSettings:
   allowVolumeCreationWithDegradedAvailability: ~
   autoCleanupSystemGeneratedSnapshot: ~
   concurrentAutomaticEngineUpgradePerNodeLimit: ~
+  backingImageCleanupWaitInterval: ~
 privateRegistry:
   registryUrl: ~
   registryUser: ~