Proper Tire Presure
What should the proper tire pressure be on ST205/75R15 tires on a travel trailer? Thanks
Forum Discussion
Do NOT use the max pressure molded into the sidewall. That's the maximum the tire can take without blowing up (with a safety factor, of course). You need to weigh the load on the tires (when typically loaded for a trip), then consult the tire manufacturer's load/pressure chart.
As an example, the tires on my Kia minivan are rated to 45 psi by the molded # on the sidewall. The vehicle manufacturer recommends 34 in the front and 38 in the back. With our typical load (me, DW and our two Labradors) the weighbridge numbers suggest 31 front and 35 rear. The Toyos I have on the van are at about 55,000 miles (van has 120K) and are still in good shape, using those numbers.
As an example, the tires on my Kia minivan are rated to 45 psi by the molded # on the sidewall. The vehicle manufacturer recommends 34 in the front and 38 in the back. With our typical load (me, DW and our two Labradors) the weighbridge numbers suggest 31 front and 35 rear. The Toyos I have on the van are at about 55,000 miles (van has 120K) and are still in good shape, using those numbers.
