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Members widely recommend Sailun tires for heavy fifth wheels, with many reporting years of trouble-free use, especially when purchased online and installed at local shops. However, some caution about recent manufacturing shifts (from China to Vietnam and now Cambodia), noting a recall and quality concerns with certain batches. The latest Sailun S637 tires are now Load Range H (16 ply, 120 psi max), replacing the older G-rated (14 ply, 110 psi) models. Members stress the importance of...
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Members widely recommend Sailun tires for heavy fifth wheels, with many reporting years of trouble-free use, especially when purchased online and installed at local shops. However, some caution about recent manufacturing shifts (from China to Vietnam and now Cambodia), noting a recall and quality concerns with certain batches. The latest Sailun S637 tires are now Load Range H (16 ply, 120 psi max), replacing the older G-rated (14 ply, 110 psi) models. Members stress the importance of checking manufacturing dates and load ratings, and suggest adjusting tire pressure based on actual axle weights—most recommend running 90–95 psi cold for a 14,400 lb GVWR trailer, rather than max pressure, to avoid a harsh ride.
For tire pressure monitoring, the TST system (especially the 507 model) is the most trusted, with many using the screw-on external sensors and a repeater for reliable signal. Some prefer internal sensors for a cleaner install, but external sensors offer easier battery changes and transferability. Alternatives like Tire Minder (integrates with smartphones) and Hallowview (combines TPMS with a rearview camera) are also mentioned positively. Members share practical tips on wiring repeaters and emphasize using all-metal valve stems for safety.
A few outliers report issues with Sailun (notably tread separation and poor customer service during recalls), and some have switched to Hankook, Carlisle, or Goodyear G614s. There’s consensus that the new H-rated Sailuns are likely the only option going forward, but members advise weighing your rig and consulting inflation charts for proper setup. For spare tire carriers, heavier H-rated tires may strain or break cable systems, so mechanical or reinforced carriers are suggested.