Car Repair & Maintenance : How to Change a Flat Tire. Posted on September 1, 2010 by admin · Automotive Tips Video. Changing a flat tire is fairly simple with the proper floor jack and jack placement. Use a lug wrench to remove the lug nuts when changing a flat tire with help from an auto mechanic in this free video on car repairs and maintenance. Expert: Earl Kester Sr. Bio: Earl Kester Sr. has more than 50 years of experience as an auto mechanic. Filmmaker: Carlye Jones …