diff --git a/externs/olx.js b/externs/olx.js
index d819468aba..fd68460f29 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -3976,6 +3976,8 @@ olx.source.TileUTFGridOptions.prototype.url;
  *            tileLoadFunction: (ol.TileLoadFunctionType|undefined),
  *            tilePixelRatio: (number|undefined),
  *            tileUrlFunction: (ol.TileUrlFunctionType|undefined),
+ *            url: (string|undefined),
+ *            urls: (Array.<string>|undefined),
  *            wrapX: (boolean|undefined)}}
  * @api
  */
@@ -4088,6 +4090,24 @@ olx.source.TileImageOptions.prototype.tilePixelRatio;
 olx.source.TileImageOptions.prototype.tileUrlFunction;
 
 
+/**
+ * URL template. Must include `{x}`, `{y}` or `{-y}`, and `{z}` placeholders.
+ * A `{?-?}` template pattern, for example `subdomain{a-f}.domain.com`, may be
+ * used instead of defining each one separately in the `urls` option.
+ * @type {string|undefined}
+ * @api stable
+ */
+olx.source.TileImageOptions.prototype.url;
+
+
+/**
+ * An array of URL templates.
+ * @type {Array.<string>|undefined}
+ * @api
+ */
+olx.source.TileImageOptions.prototype.urls;
+
+
 /**
  * Whether to wrap the world horizontally. The default, `undefined`, is to
  * request out-of-bounds tiles from the server. When set to `false`, only one
@@ -4101,11 +4121,11 @@ olx.source.TileImageOptions.prototype.wrapX;
 
 /**
  * @typedef {{attributions: (Array.<ol.Attribution>|undefined),
+ *            format: (ol.format.Feature|undefined),
  *            logo: (string|olx.LogoOptions|undefined),
  *            opaque: (boolean|undefined),
  *            projection: ol.proj.ProjectionLike,
  *            state: (ol.source.State|string|undefined),
- *            format: (ol.format.Feature|undefined),
  *            tileClass: (function(new: ol.VectorTile, ol.TileCoord,
  *                 ol.TileState, string, ol.format.Feature,
  *                 ol.TileLoadFunctionType)|undefined),
@@ -4113,6 +4133,8 @@ olx.source.TileImageOptions.prototype.wrapX;
  *            tileLoadFunction: (ol.TileLoadFunctionType|undefined),
  *            tilePixelRatio: (number|undefined),
  *            tileUrlFunction: (ol.TileUrlFunctionType|undefined),
+ *            url: (string|undefined),
+ *            urls: (Array.<string>|undefined),
  *            wrapX: (boolean|undefined)}}
  * @api
  */
@@ -4128,6 +4150,14 @@ olx.source.VectorTileOptions;
 olx.source.VectorTileOptions.prototype.attributions;
 
 
+/**
+ * Feature format for tiles. Used and required by the default
+ * `tileLoadFunction`.
+ * @type {ol.format.Feature|undefined}
+ */
+olx.source.VectorTileOptions.prototype.format;
+
+
 /**
  * Logo.
  * @type {string|olx.LogoOptions|undefined}
@@ -4160,14 +4190,6 @@ olx.source.VectorTileOptions.prototype.projection;
 olx.source.VectorTileOptions.prototype.state;
 
 
-/**
- * Feature format for tiles. Used and required by the default
- * `tileLoadFunction`.
- * @type {ol.format.Feature|undefined}
- */
-olx.source.VectorTileOptions.prototype.format;
-
-
 /**
  * Class used to instantiate image tiles. Default is {@link ol.VectorTile}.
  * @type {function(new: ol.VectorTile, ol.TileCoord,
@@ -4214,10 +4236,27 @@ olx.source.VectorTileOptions.prototype.tileUrlFunction;
 
 
 /**
- * Whether to wrap the world horizontally. The default, `undefined`, is to
- * request out-of-bounds tiles from the server. When set to `false`, only one
- * world will be rendered. When set to `true`, tiles will be requested for one
- * world only, but they will be wrapped horizontally to render multiple worlds.
+ * URL template. Must include `{x}`, `{y}` or `{-y}`, and `{z}` placeholders.
+ * A `{?-?}` template pattern, for example `subdomain{a-f}.domain.com`, may be
+ * used instead of defining each one separately in the `urls` option.
+ * @type {string|undefined}
+ * @api stable
+ */
+olx.source.VectorTileOptions.prototype.url;
+
+
+/**
+ * An array of URL templates.
+ * @type {Array.<string>|undefined}
+ * @api
+ */
+olx.source.VectorTileOptions.prototype.urls;
+
+
+/**
+ * Whether to wrap the world horizontally. When set to `false`, only one world
+ * will be rendered. When set to `true`, tiles will be wrapped horizontally to
+ * render multiple worlds. Default is `true`.
  * @type {boolean|undefined}
  * @api
  */
diff --git a/src/ol/source/tilearcgisrestsource.js b/src/ol/source/tilearcgisrestsource.js
index 76ba2c336e..bd37a418d6 100644
--- a/src/ol/source/tilearcgisrestsource.js
+++ b/src/ol/source/tilearcgisrestsource.js
@@ -7,7 +7,6 @@ goog.require('goog.string');
 goog.require('goog.uri.utils');
 goog.require('ol');
 goog.require('ol.TileCoord');
-goog.require('ol.TileUrlFunction');
 goog.require('ol.extent');
 goog.require('ol.proj');
 goog.require('ol.size');
@@ -45,20 +44,11 @@ ol.source.TileArcGISRest = function(opt_options) {
     tileGrid: options.tileGrid,
     tileLoadFunction: options.tileLoadFunction,
     tileUrlFunction: goog.bind(this.tileUrlFunction_, this),
+    url: options.url,
+    urls: options.urls,
     wrapX: options.wrapX !== undefined ? options.wrapX : true
   });
 
-  var urls = options.urls;
-  if (urls === undefined && options.url !== undefined) {
-    urls = ol.TileUrlFunction.expandUrl(options.url);
-  }
-
-  /**
-   * @private
-   * @type {!Array.<string>}
-   */
-  this.urls_ = urls || [];
-
   /**
    * @private
    * @type {Object}
@@ -100,7 +90,7 @@ ol.source.TileArcGISRest.prototype.getRequestUrl_ =
     function(tileCoord, tileSize, tileExtent,
         pixelRatio, projection, params) {
 
-  var urls = this.urls_;
+  var urls = this.urls;
   if (urls.length === 0) {
     return undefined;
   }
@@ -158,38 +148,6 @@ ol.source.TileArcGISRest.prototype.getTilePixelSize =
 };
 
 
-/**
- * Return the URLs used for this ArcGIS source.
- * @return {!Array.<string>} URLs.
- * @api stable
- */
-ol.source.TileArcGISRest.prototype.getUrls = function() {
-  return this.urls_;
-};
-
-
-/**
- * Set the URL to use for requests.
- * @param {string|undefined} url URL.
- * @api stable
- */
-ol.source.TileArcGISRest.prototype.setUrl = function(url) {
-  var urls = url !== undefined ? ol.TileUrlFunction.expandUrl(url) : null;
-  this.setUrls(urls);
-};
-
-
-/**
- * Set the URLs to use for requests.
- * @param {Array.<string>|undefined} urls URLs.
- * @api stable
- */
-ol.source.TileArcGISRest.prototype.setUrls = function(urls) {
-  this.urls_ = urls || [];
-  this.changed();
-};
-
-
 /**
  * @param {ol.TileCoord} tileCoord Tile coordinate.
  * @param {number} pixelRatio Pixel ratio.
diff --git a/src/ol/source/tileimagesource.js b/src/ol/source/tileimagesource.js
index f5b1929ccf..c4964374ef 100644
--- a/src/ol/source/tileimagesource.js
+++ b/src/ol/source/tileimagesource.js
@@ -38,6 +38,8 @@ ol.source.TileImage = function(options) {
         options.tileLoadFunction : ol.source.TileImage.defaultTileLoadFunction,
     tilePixelRatio: options.tilePixelRatio,
     tileUrlFunction: options.tileUrlFunction,
+    url: options.url,
+    urls: options.urls,
     wrapX: options.wrapX
   });
 
diff --git a/src/ol/source/tilewmssource.js b/src/ol/source/tilewmssource.js
index 265b607a2d..f17caee76a 100644
--- a/src/ol/source/tilewmssource.js
+++ b/src/ol/source/tilewmssource.js
@@ -11,7 +11,6 @@ goog.require('goog.string');
 goog.require('goog.uri.utils');
 goog.require('ol');
 goog.require('ol.TileCoord');
-goog.require('ol.TileUrlFunction');
 goog.require('ol.extent');
 goog.require('ol.proj');
 goog.require('ol.size');
@@ -49,20 +48,11 @@ ol.source.TileWMS = function(opt_options) {
     tileGrid: options.tileGrid,
     tileLoadFunction: options.tileLoadFunction,
     tileUrlFunction: goog.bind(this.tileUrlFunction_, this),
+    url: options.url,
+    urls: options.urls,
     wrapX: options.wrapX !== undefined ? options.wrapX : true
   });
 
-  var urls = options.urls;
-  if (urls === undefined && options.url !== undefined) {
-    urls = ol.TileUrlFunction.expandUrl(options.url);
-  }
-
-  /**
-   * @private
-   * @type {!Array.<string>}
-   */
-  this.urls_ = urls || [];
-
   /**
    * @private
    * @type {number}
@@ -221,7 +211,7 @@ ol.source.TileWMS.prototype.getRequestUrl_ =
     function(tileCoord, tileSize, tileExtent,
         pixelRatio, projection, params) {
 
-  var urls = this.urls_;
+  var urls = this.urls;
   if (urls.length === 0) {
     return undefined;
   }
@@ -301,16 +291,6 @@ ol.source.TileWMS.prototype.getTilePixelSize =
 };
 
 
-/**
- * Return the URLs used for this WMS source.
- * @return {!Array.<string>} URLs.
- * @api stable
- */
-ol.source.TileWMS.prototype.getUrls = function() {
-  return this.urls_;
-};
-
-
 /**
  * @private
  */
@@ -319,8 +299,8 @@ ol.source.TileWMS.prototype.resetCoordKeyPrefix_ = function() {
   var res = [];
 
   var j, jj;
-  for (j = 0, jj = this.urls_.length; j < jj; ++j) {
-    res[i++] = this.urls_[j];
+  for (j = 0, jj = this.urls.length; j < jj; ++j) {
+    res[i++] = this.urls[j];
   }
 
   var key;
@@ -332,29 +312,6 @@ ol.source.TileWMS.prototype.resetCoordKeyPrefix_ = function() {
 };
 
 
-/**
- * Set the URL to use for requests.
- * @param {string|undefined} url URL.
- * @api stable
- */
-ol.source.TileWMS.prototype.setUrl = function(url) {
-  var urls = url !== undefined ? ol.TileUrlFunction.expandUrl(url) : null;
-  this.setUrls(urls);
-};
-
-
-/**
- * Set the URLs to use for requests.
- * @param {Array.<string>|undefined} urls URLs.
- * @api stable
- */
-ol.source.TileWMS.prototype.setUrls = function(urls) {
-  this.urls_ = urls || [];
-  this.resetCoordKeyPrefix_();
-  this.changed();
-};
-
-
 /**
  * @param {ol.TileCoord} tileCoord Tile coordinate.
  * @param {number} pixelRatio Pixel ratio.
diff --git a/src/ol/source/urltilesource.js b/src/ol/source/urltilesource.js
index f675aca898..0df96f58ca 100644
--- a/src/ol/source/urltilesource.js
+++ b/src/ol/source/urltilesource.js
@@ -5,6 +5,7 @@ goog.require('ol.TileLoadFunctionType');
 goog.require('ol.TileState');
 goog.require('ol.TileUrlFunction');
 goog.require('ol.TileUrlFunctionType');
+goog.require('ol.proj');
 goog.require('ol.source.Tile');
 goog.require('ol.source.TileEvent');
 
@@ -20,6 +21,8 @@ goog.require('ol.source.TileEvent');
  *            tileLoadFunction: ol.TileLoadFunctionType,
  *            tilePixelRatio: (number|undefined),
  *            tileUrlFunction: (ol.TileUrlFunctionType|undefined),
+ *            url: (string|undefined),
+ *            urls: (Array.<string>|undefined),
  *            wrapX: (boolean|undefined)}}
  */
 ol.source.UrlTileOptions;
@@ -51,19 +54,38 @@ ol.source.UrlTile = function(options) {
     wrapX: options.wrapX
   });
 
+  /**
+   * @protected
+   * @type {ol.TileLoadFunctionType}
+   */
+  this.tileLoadFunction = options.tileLoadFunction;
+
   /**
    * @protected
    * @type {ol.TileUrlFunctionType}
    */
-  this.tileUrlFunction = goog.isDef(options.tileUrlFunction) ?
+  this.tileUrlFunction = options.tileUrlFunction ?
       options.tileUrlFunction :
       ol.TileUrlFunction.nullTileUrlFunction;
 
   /**
    * @protected
-   * @type {ol.TileLoadFunctionType}
+   * @type {!Array.<string>|null}
    */
-  this.tileLoadFunction = options.tileLoadFunction;
+  this.urls = null;
+
+  if (options.urls) {
+    if (options.tileUrlFunction) {
+      this.urls = options.urls;
+    } else {
+      this.setUrls(options.urls);
+    }
+  } else if (options.url) {
+    this.setUrl(options.url);
+  }
+  if (options.tileUrlFunction) {
+    this.setTileUrlFunction(options.tileUrlFunction);
+  }
 
 };
 goog.inherits(ol.source.UrlTile, ol.source.Tile);
@@ -89,6 +111,18 @@ ol.source.UrlTile.prototype.getTileUrlFunction = function() {
 };
 
 
+/**
+ * Return the URLs used for this XYZ source.
+ * When a tileUrlFunction is used instead of url or urls,
+ * null will be returned.
+ * @return {!Array.<string>|null} URLs.
+ * @api
+ */
+ol.source.UrlTile.prototype.getUrls = function() {
+  return this.urls;
+};
+
+
 /**
  * Handle tile change events.
  * @param {goog.events.Event} event Event.
@@ -140,6 +174,30 @@ ol.source.UrlTile.prototype.setTileUrlFunction = function(tileUrlFunction) {
 };
 
 
+/**
+ * Set the URL to use for requests.
+ * @param {string} url URL.
+ * @api stable
+ */
+ol.source.UrlTile.prototype.setUrl = function(url) {
+  this.setTileUrlFunction(ol.TileUrlFunction.createFromTemplates(
+      ol.TileUrlFunction.expandUrl(url), this.tileGrid));
+  this.urls = [url];
+};
+
+
+/**
+ * Set the URLs to use for requests.
+ * @param {Array.<string>} urls URLs.
+ * @api stable
+ */
+ol.source.UrlTile.prototype.setUrls = function(urls) {
+  this.setTileUrlFunction(ol.TileUrlFunction.createFromTemplates(
+      urls, this.tileGrid));
+  this.urls = urls;
+};
+
+
 /**
  * @inheritDoc
  */
diff --git a/src/ol/source/vectortilesource.js b/src/ol/source/vectortilesource.js
index 3fab70318c..1b4641de3a 100644
--- a/src/ol/source/vectortilesource.js
+++ b/src/ol/source/vectortilesource.js
@@ -42,6 +42,8 @@ ol.source.VectorTile = function(options) {
         options.tileLoadFunction : ol.source.VectorTile.defaultTileLoadFunction,
     tileUrlFunction: options.tileUrlFunction,
     tilePixelRatio: options.tilePixelRatio,
+    url: options.url,
+    urls: options.urls,
     wrapX: options.wrapX === undefined ? true : options.wrapX
   });
 
diff --git a/src/ol/source/wmtssource.js b/src/ol/source/wmtssource.js
index b9fd7c0d8e..14483b02d5 100644
--- a/src/ol/source/wmtssource.js
+++ b/src/ol/source/wmtssource.js
@@ -87,12 +87,6 @@ ol.source.WMTS = function(options) {
     urls = ol.TileUrlFunction.expandUrl(options.url);
   }
 
-  /**
-   * @private
-   * @type {!Array.<string>}
-   */
-  this.urls_ = urls || [];
-
   // FIXME: should we guess this requestEncoding from options.url(s)
   //        structure? that would mean KVP only if a template is not provided.
 
@@ -175,9 +169,9 @@ ol.source.WMTS = function(options) {
         });
   }
 
-  var tileUrlFunction = this.urls_.length > 0 ?
+  var tileUrlFunction = (urls && urls.length > 0) ?
       ol.TileUrlFunction.createFromTileUrlFunctions(
-          this.urls_.map(createFromWMTSTemplate)) :
+          urls.map(createFromWMTSTemplate)) :
       ol.TileUrlFunction.nullTileUrlFunction;
 
   goog.base(this, {
@@ -191,6 +185,7 @@ ol.source.WMTS = function(options) {
     tileLoadFunction: options.tileLoadFunction,
     tilePixelRatio: options.tilePixelRatio,
     tileUrlFunction: tileUrlFunction,
+    urls: urls,
     wrapX: options.wrapX !== undefined ? options.wrapX : false
   });
 
@@ -268,16 +263,6 @@ ol.source.WMTS.prototype.getStyle = function() {
 };
 
 
-/**
- * Return the URLs used for this WMTS source.
- * @return {!Array.<string>} URLs.
- * @api
- */
-ol.source.WMTS.prototype.getUrls = function() {
-  return this.urls_;
-};
-
-
 /**
  * Return the version of the WMTS source.
  * @return {string} Version.
diff --git a/src/ol/source/xyzsource.js b/src/ol/source/xyzsource.js
index 17c1f46ed7..0ca9c13cba 100644
--- a/src/ol/source/xyzsource.js
+++ b/src/ol/source/xyzsource.js
@@ -1,6 +1,5 @@
 goog.provide('ol.source.XYZ');
 
-goog.require('ol.TileUrlFunction');
 goog.require('ol.source.TileImage');
 
 
@@ -38,12 +37,6 @@ ol.source.XYZ = function(options) {
         tileSize: options.tileSize
       });
 
-  /**
-   * @private
-   * @type {!Array.<string>|null}
-   */
-  this.urls_ = null;
-
   goog.base(this, {
     attributions: options.attributions,
     crossOrigin: options.crossOrigin,
@@ -53,52 +46,11 @@ ol.source.XYZ = function(options) {
     tileGrid: tileGrid,
     tileLoadFunction: options.tileLoadFunction,
     tilePixelRatio: options.tilePixelRatio,
-    tileUrlFunction: ol.TileUrlFunction.nullTileUrlFunction,
+    tileUrlFunction: options.tileUrlFunction,
+    url: options.url,
+    urls: options.urls,
     wrapX: options.wrapX !== undefined ? options.wrapX : true
   });
 
-  if (options.tileUrlFunction !== undefined) {
-    this.setTileUrlFunction(options.tileUrlFunction);
-  } else if (options.urls !== undefined) {
-    this.setUrls(options.urls);
-  } else if (options.url !== undefined) {
-    this.setUrl(options.url);
-  }
-
 };
 goog.inherits(ol.source.XYZ, ol.source.TileImage);
-
-
-/**
- * Return the URLs used for this XYZ source.
- * When a tileUrlFunction is used instead of url or urls,
- * null will be returned.
- * @return {!Array.<string>|null} URLs.
- * @api
- */
-ol.source.XYZ.prototype.getUrls = function() {
-  return this.urls_;
-};
-
-
-/**
- * Set the URL to use for requests.
- * @param {string} url URL.
- * @api stable
- */
-ol.source.XYZ.prototype.setUrl = function(url) {
-  this.setTileUrlFunction(ol.TileUrlFunction.createFromTemplates(
-      ol.TileUrlFunction.expandUrl(url), this.tileGrid));
-  this.urls_ = [url];
-};
-
-
-/**
- * Set the URLs to use for requests.
- * @param {Array.<string>} urls URLs.
- */
-ol.source.XYZ.prototype.setUrls = function(urls) {
-  this.setTileUrlFunction(
-      ol.TileUrlFunction.createFromTemplates(urls, this.tileGrid));
-  this.urls_ = urls;
-};