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					Originally Posted by  JFP in PA
					 
				 
				Sure, drive them until the brake warning light comes on due to the sensor in the pad detecting that they are worn thin. 
			
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Assuming the brake sensors are still connected.....I'm sure you've seen a few removed & tied up in the wheel arch too.
To Scottblue - its relatively easy to see the pads from the rear of the calipers with a flashlight - if in doubt, remove each wheel and you will see the thickness of the pads more clearly.