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Old 05-30-2011, 02:18 PM
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Default Anybody used Kumho 857 radial on their trailer?

Ok, looking for a replacement for my aging Marathons (USA made), and all I can find around here are the China Marathons which seem to have a lot of negative posts over the past 2 years. It's for a dual axle bay boat trailer with 205R14's on there now.

I just found out that Kumho makes a model 857 radial commercial truck/trailer tire that is load range "D" in that size (Marathon is "C"). SInce it's a D tire, it's 65psi instead of the 50 on the Marathons. The Khumo is rated for 500 pounds more capacity per tire, and is an 8 ply design. Also speed range "Q" which is 99mph. Seems to be pretty good specs, but I was wondering if anyone had any real world boat trailer use info to share. I can find some travel trailer posts with google search and they are pretty much all very positive.

Another plus is the Kumho regional distribution center is 6 miles down the road so I guess I can alway's go knocking on their door if they start blowing out pre-maturely.

Here is the tire info on Tirerack.com

Kumho 857 commercial trailer tire

Last edited by dward51; 05-30-2011 at 02:30 PM.
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Old 05-30-2011, 02:31 PM
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Seems a bit pricey when you add shipping to the mix. I bought a 15" Marathon from Wally World (had to, didn't want to) and the total for load range E was $127 mounted and taxed.
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Old 05-30-2011, 02:42 PM
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Seems a bit pricey when you add shipping to the mix. I bought a 15" Marathon from Wally World (had to, didn't want to) and the total for load range E was $127 mounted and taxed.
I thought about moving up to a 15" rim, but I don't think there is room under the fenders. Also they are welded on and galvanized after the weld so moving them up is not an option (they are part of the side walk way area fore and aft of the tire wells). Only other option would be to put in axle spacers or flip the axle like on a travel trailer to raise the trailer frame/fender height.

So if I stay in a 14", these are the only load range "D" tires I've seen in 14". If they last, that's not that much more money (but again, it's "IF").
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Old 05-30-2011, 02:56 PM
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I did the same thing and went to kumho. You'll be satisfied.
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Old 05-30-2011, 03:28 PM
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Boat trailer tires die for reasons not related to miles....... under-inflation is #1, age is #2, an over-loading the tires for the load is related to both #1 and 3.

If you tow alot and use the tires in order to get the most miles out of them, I see your point. If you're a weekend or monthly boater, then buy cheap, keep them covered and inflated properly, and get one range UP from what you think your boat/trailer combo weighs.
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Old 05-30-2011, 05:18 PM
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I got a set of the 14" Khumo's after a Marathon had high speed blow out. Not only do you get the higher load, but you get a much higher speed rating. Marathons are max rated to 65mph, Khumo's are Q rated = 99 mph! That is the big advantage in my opinion and on that basis alone, should eliminate consideration for any trailer speed rated tire.
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Old 05-30-2011, 05:36 PM
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Khumo trailer tires good value for the coin, very satisfied.
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Old 05-30-2011, 05:53 PM
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Old 05-31-2011, 08:28 AM
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I replaced my 5 Marathons with Khumos last summer after a double blow out on the way way back from Key West. I have been very happy with them. I love the extra weight capacity and speed rating (even though I don't tow over 65 mph except on very rare occasions).
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Old 05-31-2011, 12:16 PM
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After reading many reviews on the web and here on THT I purchased 7 of the Kumho 857's for our tri-axle trailer. (one as a spare and still had one old tire that's never been used to keep as a spare) I was coming from bias-ply tires as that's what the trailer was delivered with.

The first 500 miles were a bit squirmy as they were breaking in. There was a tad bit more sway than the bias plys. However, once they were broken in I was VERY impresssed. No sway, very smooth, great performance compared to the bias plys I was coming from. The trailer tracked very true and only severe road undulations would cause minor sway that was almost immediately eliminated by the Kumhos. We had no issues in our most recent 1100 mile tow in 90 plus F temps and speeds of up to 70mph for hours at a time.

I'll have radials on every trailer from here on out. If you are on 14" wheels then you do not have a lot of options, I'd recommend the Kumhos every time.
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Old 05-31-2011, 01:38 PM
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i just went through this trailer tire dilemma two weeks ago. i've got 14 inch wheels so my choices were limited. i was unable to find the Khumho in 14s. considered going to Khumho 15s but not enough room without moving the fenders up.

heard rumor that Marathons were once again being made in USA but every tire looked at had "China" stamped on the sidewall.

wanted to get some more Tow Masters which are Canadian made but could not seem to put my hands on any in a reasonable amount of time.

after reading every review on trailer tires i could find, i ended up on a set of Chinese made Load Stars. so far so good. the guy who sells them who i know personally said in 4 years he has had two come back defective.
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Old 05-31-2011, 07:49 PM
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I do not have kumhos on my trailer but I will tell you that if your "aging" marathons are still running their race, the finish line is probably closer than you think. In fact, no where near your house or a tire store either. Just giving you advice to replace them all at once since they seem to blow out within the same month of each other. From the good comments on this forum the 857's will probably be my next set.
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Old 05-31-2011, 09:38 PM
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Quote:
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I do not have kumhos on my trailer but I will tell you that if your "aging" marathons are still running their race, the finish line is probably closer than you think. In fact, no where near your house or a tire store either. Just giving you advice to replace them all at once since they seem to blow out within the same month of each other. From the good comments on this forum the 857's will probably be my next set.
Ok, I confess, they are stamped with a 2001 date. I got my money out of them (USA Marathons). That's why I'm seriously looking and about to buy new ones. Yeah I know, they may still look good..... until I'm stranded on the side of the road with two out at the same time.

Hardest part is convincing the Admiral why those tires which look just fine need to be replaced at $120 a pop x 5 plus install fees.
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Old 05-31-2011, 10:11 PM
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Have the admiral change one tire and see if her position changes!
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Old 06-01-2011, 04:58 AM
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I'm on year three ( I think, memory not as good as....what was I saying?) and my kumho's are still doing great. Best trailer tires I've had.
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Old 06-01-2011, 05:27 AM
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My Kumho's have been great. Moved over from the GY Marathon's. The ride is superb plus the tires load rating is much better than the Marathon's. They're about a 1/4" inch taller than the Marathon's.




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Old 06-01-2011, 05:51 AM
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I made the change 5 years ago and have been satisfied
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Old 06-01-2011, 07:30 AM
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The OP did well with his USA made marathons in my opinion. According to the build date on my USA Marathons I only received 6 years and 3 months of service, just outside of the warranty period oddly enough.
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Old 06-01-2011, 08:50 PM
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Quote:
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The OP did well with his USA made marathons in my opinion. According to the build date on my USA Marathons I only received 6 years and 3 months of service, just outside of the warranty period oddly enough.
Did well is an understatement. I've been rolling the dice for way too long on those nearly 10 year old tires which is why I'm hesatant to take one more roll. The boat is sitting until I get tires (come on payday....) The more I think about it, I would rather hear the complaints about spending $120 per tire than gamble getting the Admiral stuck on the side of a back road on the way to the water.
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Old 06-05-2011, 08:54 AM
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Changed 4 of my 4 yr old Carlises to the Kumos last yr and what a world of difference, had them balanced also and so far so good. I think I found a winner.
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