5 Common Problems Issues With the BMW 5 SERIES 2013 2015Set of 4, Front & Rear. The letters O, I, and Q never appear in a VIN. If the barcode is unclear, include the VIN digits. Luxury custom car floor mats for bmw 5-series f10 e60 520i 525i 528i 530i 535i the images are for reference only. But if it’s not there, look under the driver’s side windshield.