The rear disc brake pads on a second generation (2010, 2011, 2012, 2013, 2014, 2015 & 2016) Buick LaCrosse sedan usually last twice as long as the front brake pads or anywhere from 60,000 miles to over 100,000 miles depending on your driving conditions. Take a look at my DIY instructions for the procedure (with the replacement part numbers) by clicking on the text link or thumbnail image below.