Nissan Motor Co. is planning to recall 48,700 trucks and SUVs for problems with a suspension part that could lead to a rough ride. It will cover some, but not all, 2010 Nissan Armadas, Frontiers, Titans, Pathfinders and Xterras and Infiniti QX56 models. The Frontier, Pathfinder and Xterra are produced at the company’s Smyrna plant. The problem centers on a lower suspension control link, which may not have been welded properly. It could cause the bushing collar to crack, leading to a rough and noisy ride. No accidents have been reported.