Kumho 857s, pressure?

JIMNLIN wrote:
Unless you over tired the trailers axle rating and the wheels pressure capacity its advised to run the tires max sidewall pressure.

Please educate me. Where does this come from? Is it just a trailer tire thing? Sidewall on my truck tires say 44 lbs MAXIMUM, but door jamb sticker says 35 lbs.

Unless you over tired the trailers axle rating and the wheels pressure capacity its advised to run the tires max sidewall pressure.

I was going to replace a couple of tires with the Kumho 857, but my local tire store said he couldn't get them. He did have the Hankook RA08 which has the same specs, having a higher speed rating and load capacity than the original tires. Sidewall says max pressure is 65, but I plan to run 60, since my trailer is several thousand pounds lighter than the total load these tires are rated for. Incidentally, the tires are not for the trailer in signature, they are for a boat trailer with the same size tire.

Steve B., are you saying that Kumho is no longer making tires?

I would run them at max, which I believe is 44 psi. That is, unless your trailer weighs only about half of the max load rating for the tires, in which case I could see dropping the pressure.

Thanks Steve B,

I have GY Marathons now and it is time for new. Considered the Kuhmo 857 as I want to step up in load rating but that would also mean I need to step up the wheel. Too much money for this trailer. Never had a problem with GYM's but will go with Maxxis this time.

As mentioned, air to the max on the tire sidewall. That will give you maximum performance from the tires, plus they will run cooler.

I contacted tire rack and asked about pressure but they couldn't help me. They said it should be in manual or on trailer. Manufacturer is out of business. Stamped max is only for max load.

Bought from Tire Rack but had to wait a few weeks.

Steve B.

Where did you end up purchasing them? Seems like a major problem to get them in the Atlanta Ga. area.

Steve B. wrote:
Just put new Kumho 857s on my trailer, 205 14 Wondering what tire pressure other folks are running them at. Thanks.

Run your tires at whatever is stated on the sidewall.