Yeah, replying to my own post.
A search for 4.80x8 tires shows I've probably got load range B tires with max
load at ~580# @90psi. Also most websites I went to said to always run max
inflation on trailer tires unless theres a problem with ride (like pogo stick
bouncing). One site said that 3 years was the max lifespan for trailer tires....
It looks like load range C costs ~$10 more per tire. One of my tires has fairly
significant weather checking so I think in the fall (trailer basically only
gets used in the winter time, its a snowmobile trailer after all) I'll switch
everything but the spare (which has lived inside and looks perfect) to
loadrange C. Then maybe next year I'll change the spare over... That should
give me a little more confidence... For awhile I was carrying two spares all
the time even though I've only had a few blowouts. I hate seeing trailers
sitting forlornly on the side of the highway...
-Curt
--- On Mon, 2/23/09, Curt Raymond <curtlud...@yahoo.com> wrote:
From: Curt Raymond <curtlud...@yahoo.com>
Subject: Re: [MBZ] OT: Trailer tires
To: "Diesel List" <mercedes@okiebenz.com>
Date: Monday, February 23, 2009, 4:51 PM
Dinky,
In fact I think they're rated for LESS than the max capacity of the trailer
although I'm sure I've seriously overloaded them many times. My 2 liquid cooled
Polaris machines weigh around 450# apiece plus the trailer which must be around
400#...
IIRC the sidewall says 450# @90psi.
I checked at one point on the last trip and the tires were a little warm but
not seriously hot.
The trailer bounces around like a pogo stick unloaded with even 30psi...
-Curt
Date: Mon, 23 Feb 2009 13:07:30 -0500
From: Mitch Haley <m...@voyager.net>
Subject: Re: [MBZ] OT: Trailer tires
To: Mercedes Discussion List <mercedes@okiebenz.com>
Message-ID: <49a2e5e2.4070...@voyager.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
It can get bouncy running max pressure and light loads. I might consider 3/4
pressure for half load, or maybe even 1/2 pressure for a long return trip with
an empty trailer.
Are those tires rated for a lot more load than the trailer, or are we talking
about tiny 4.80x8" snowmobile trailer tires? My Hobie Cat trailer runs those
dinky things, and I keep them inflated to the max, even though the whole
boat/trailer weighs about the same as an individual tire's max capacity.
My tires are only load range B, so I think they are only rated for about
780lb/tire at 60psi or
some such, the Cs would take more like 90psi. The rig
weighs about 750lb and I've never been tempted to run it below 60psi.
Mitch.
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