Sailun S637 or Goodyear G614

vwsportbug wrote:
For those of you who say that the original poster could run the G614's with 80 PSI, I expect that Goodyear's weight/vs pressure tables might bear that out but I prefer to carry higher PSI in my tires on a trailer with similar weights. I always run 105 PSI and can see no unusual wear after 3 years and 30,000 miles.

I know that under-inflation is one of the biggest problems with trailer tires but I've never seen any indication that over-inflation (as long as it is within the wheel/tire's capability) is an issue. Sure, the ride might be harsher but I don't see any evidence of that in my trailer's contents and doubt that 80 PSI vs 105 PSI would be noticeable at all in the trailer's ride quality.


I will err on the side of carrying too much PSI rather than too little....

I think those that want to post about over/under inflation pressures should first define their perception of what those are.

The vehicle manufacturer determines what a normal correct pressure is and places those pressure (s) on the vehicle’s certification label/tire placard. Normal deviations from those recommendations are found in the vehicle’s owner’s manual.

Under inflation pressures would be those less than what is recommended by the vehicle manufacturer and likewise for over inflation pressures.

Different sized replacement tires derive their recommended tire pressures from the Original Equipment (OE) tires, that means the tire pressure for them would be that which would provide an equal load capacity compared to the OE tires.

That’s how it’s supposed to work. Most deviations from those standards are derived from tire manufacturers information that is improperly applied from misunderstandings. Tire manufacturers will not knowingly overrule tire pressures set by vehicle manufacturers. Tire manufacturers build tires for a purpose. The purpose is decided upon by vehicle manufacturers.

FastEagle