Tire pressure
My new to me unit has Load Range G tires that indicate 110 psi cold max. I used it last year over 2000 miles at 80 psi as that was the pressure leaving the dealership. I’m headed out from Illinois to ...
Forum Discussion
Your 17.5" Sailuns have a 6008 lb capacity per tire at 120 psi on a trailer with 7k or even 8k axles.
The 16" Sailun G load range with the 4080 lb or 4400 lb capacity would have been a better fitment.
But you gotta' work with what you got.
Remember some input comes from some that have just a few years pulling a couple of road trailers.
Lots of websites 'splains why we should use max sidewall pressures in a tire on a trailer. However this recommendation works best if the tire load capacity has been fitted to the trailers axle ratings with a 10-15 percent reserve capacity.
So we find some websites that says this when we over tire the trailer such as a 6000 lb tire on a 7k axle;
fifthwheelstreet.com
Step #5..
Selecting the Correct Tire Pressure for Your Trailer
We at Fifth Wheel St. no longer recommend adjusting trailer tire inflation pressure below the maximum load PSI rating molded on the sidewall (and only if the wheel/rim is appropriately rated) regardless of the measured scaled weight of individual tire or axle positions for all multi-axle trailers.
However, we do strongly recommend weighing individual trailer tire positions to ensure none of the axles or tire positions are overloaded. Reports have shown that trailers do not have equal weight across all tire positions. Some RV load configurations may reveal as much as 20% difference between the front and rear axle. This especially true for Toy Haulers. It is possible that mismanaged trailer load distribution will cause one end of an axle or a tire to be overloaded. It has been stated, but never confirmed by any RV Weighmaster, that there are many RVs traveling on the road with at least one tire or axle side overloaded. The only way to ensure tires and or axles are not overloaded is to weigh each tire position on your trailer. Unfortunately, attempting to obtain accurate individual tire position weight is practically impossible at all truck scales.**
The 16" Sailun G load range with the 4080 lb or 4400 lb capacity would have been a better fitment.
But you gotta' work with what you got.
Remember some input comes from some that have just a few years pulling a couple of road trailers.
Lots of websites 'splains why we should use max sidewall pressures in a tire on a trailer. However this recommendation works best if the tire load capacity has been fitted to the trailers axle ratings with a 10-15 percent reserve capacity.
So we find some websites that says this when we over tire the trailer such as a 6000 lb tire on a 7k axle;
fifthwheelstreet.com
Step #5..
Selecting the Correct Tire Pressure for Your Trailer
We at Fifth Wheel St. no longer recommend adjusting trailer tire inflation pressure below the maximum load PSI rating molded on the sidewall (and only if the wheel/rim is appropriately rated) regardless of the measured scaled weight of individual tire or axle positions for all multi-axle trailers.
However, we do strongly recommend weighing individual trailer tire positions to ensure none of the axles or tire positions are overloaded. Reports have shown that trailers do not have equal weight across all tire positions. Some RV load configurations may reveal as much as 20% difference between the front and rear axle. This especially true for Toy Haulers. It is possible that mismanaged trailer load distribution will cause one end of an axle or a tire to be overloaded. It has been stated, but never confirmed by any RV Weighmaster, that there are many RVs traveling on the road with at least one tire or axle side overloaded. The only way to ensure tires and or axles are not overloaded is to weigh each tire position on your trailer. Unfortunately, attempting to obtain accurate individual tire position weight is practically impossible at all truck scales.**
