An assembly comprising a tensioner for an endless drive arrangement for an engine, and the endless drive arrangement having a crankshaft, a crankshaft pulley, an endless drive member that is engageable with the crankshaft pulley, an accessory (14, 18) including an accessory frame, an accessory shaft that is rotatable relative to the accessory frame and an accessory pulley that is mounted to the accessory shaft and is rotatable about an accessory pulley axis; the tensioner comprising: a base; a tensioner arm having a tensioner pulley thereon, wherein the tensioner arm is generally concave about the accessory pulley axis and is pivotally mounted to the base for pivotal movement about an arm pivot axis (AArm) that is offset from the accessory pulley axis, and wherein the tensioner pulley is rotatably mounted to the tensioner arm for rotation about a tensioner pulley axis that is offset relative to the arm pivot axis (AArm) and relative to the accessory pulley axis; and a tensioner biasing member that urges the tensioner arm into the endless drive member, wherein the tensioner is mountable to the accessory frame via a plurality of fasteners (41, 42) that are each positioned at a center distance from the accessory pulley axis, wherein the tensioner biasing member is a compression spring, wherein the endless drive member engages the tensioner pulley and applies a hub load on the tensioner pulley and thereby applies a hub load moment on the tensioner arm along a first moment arm relative to the arm pivot axis (AArm), and the tensioner biasing member applies a biasing member moment on the tensioner arm that opposes the hub load moment along a second moment arm relative to the arm pivot axis (AArm), and characterized in that the center distance for each of the fasteners (41, 42) from the plurality of fasteners (41, 42) is between a value of zero mm from the accessory pulley axis to a value that is less than 25 mm greater than a diameter (DAcc) of a frame body of the accessory frame, wherein and in that the second moment arm is at least about 50 percent of the length of the first moment arm, wherein the tensioner biasing member is completely superimposed axially with the tensioner arm. a base; a tensioner arm having a tensioner pulley thereon, wherein the tensioner arm is generally concave about the accessory pulley axis and is pivotally mounted to the base for pivotal movement about an arm pivot axis (AArm) that is offset from the accessory pulley axis, and wherein the tensioner pulley is rotatably mounted to the tensioner arm for rotation about a tensioner pulley axis that is offset relative to the arm pivot axis (AArm) and relative to the accessory pulley axis; and a tensioner biasing member that urges the tensioner arm into the endless drive member, wherein the tensioner is mountable to the accessory frame via a plurality of fasteners (41, 42) that are each positioned at a center distance from the accessory pulley axis, wherein the tensioner biasing member is a compression spring, wherein the endless drive member engages the tensioner pulley and applies a hub load on the tensioner pulley and thereby applies a hub load moment on the tensioner arm along a first moment arm relative to the arm pivot axis (AArm), and the tensioner biasing member applies a biasing member moment on the tensioner arm that opposes the hub load moment along a second moment arm relative to the arm pivot axis (AArm), and characterized in that the center distance for each of the fasteners (41, 42) from the plurality of fasteners (41, 42) is between a value of zero mm from the accessory pulley axis to a value that is less than 25 mm greater than a diameter (DAcc) of a frame body of the accessory frame, wherein and in that the second moment arm is at least about 50 percent of the length of the first moment arm, wherein the tensioner biasing member is completely superimposed axially with the tensioner arm.