diff --git a/src/objects/Body.js b/src/objects/Body.js
index a38054b14..671905db3 100644
--- a/src/objects/Body.js
+++ b/src/objects/Body.js
@@ -363,6 +363,13 @@ function Body(options){
      */
     this.aabbNeedsUpdate = true;
 
+    /**
+     * Total bounding radius of the Body including its shapes, relative to body.position.
+     * @property boundingRadius
+     * @type {Number}
+     */
+    this.boundingRadius = 0;
+
     this.wlambda = new Vec3();
 
     if(options.shape){