Boat Trailer Tires | BoatUS

Boat Trailer Tires | BoatUS

Hi, I’m Ted Sensenbrenner, one of the BoatUS Trailering guys. Today, we’ll be talking about trailer tires. I know, not a very exciting topic, but
trailer tires can tell an awful lot about its intended use and capacity.
Trailer tires can also give you some warning signs and hints that something
could be a mess, and could cause you trouble down the road.
So, let’s take a closer look at trailer sidewalls, where we’ll learn an awful lot
of information. Everything that you would want to know about your tire can be
found on the sidewall. The first thing you should check for is to make sure
that your trailer tire has an ST rating. “ST” stands for “special trailer” and
can be found here. If it doesn’t say “ST,” it might say, “for trailer service only.”
Some tires will say both. If it doesn’t say that, it’s probably not meant for
trailering. Now remember, trailer tires are for trailering, and auto tires are
for automobiles. If a shop tells you that they don’t have a trailer tire and tries
to sell you an auto tire, find another shop. Trailer tires are different.
They’ve got thicker sidewalls, and they dissipate heat much better than an
automobile tire. Another thing – if you were to have an accident with your boat
trailer and you don’t have ST trailer tires, your insurance company may use
that to dispute your claim. A trailer sidewall will also tell you the
recommended PSI, or pounds per square inch, for inflation purposes. This tire is
recommending 50 pounds per square inch. While you’re here, you might want to check
the tire inflation. It’s as easy as using a tire pressure gauge. And this one’s
good. Another thing that your trailer sidewall will tell you is the load range.
Load ranges go from load A, the lightest, to load E, the heaviest. This tire is a
load range C – right in the middle. The load range tells you how many pounds
that one tire can carry safely. This tire can safely carry 1,760 pounds. When you have two tires, that brings the overall
carrying capacity of this trailer to 3,520 pounds. But, we like to recommend that your load is at least 10%
lighter. One more thing to check while you’re here is the valve stem. The
valve stem is often overlooked. Give the valve stem a push to the left
and to the right. If you don’t hear any air escaping, then this tire is ready to
roll. The sidewall also tells you the date of
manufacturer. The first two numbers is the week of manufacturer, and the second
two numbers is the year.In this case, this tire was made in the 22nd week of
2011. And while we’re here, now’s a good time to remember to always
have a spare, keep it properly inflated, and make sure it’s ready to go in case you were to need it. Remember when I was saying that trailer tires can often give you tips or
hints that something may be troubling on down the road? Let’s take a closer look
and find out what some of those trouble spots are. Dry rot or sun rot is a result
of prolonged sun exposure. This tire has a good example of sun rot and could blow
out if we go down the road. This is the general tread test. If you take a Lincoln
penny, head down, and place it in the tread, you shouldn’t be able to see the
top of Lincoln’s head. If you can, that means it’s time for a trailer tire
replacement. When you place this penny in the tread, that trailer tread depth is
good. Here, here, and here. If your trailer will be sitting for a prolonged period
of time, there are three things you’ll want to do with your trailer tires to prevent
an early demise. One: keep your trailer tires covered. You can purchase a tire
cover at most auto parts stores. Or, if you’d rather not spend the money, you can use a
piece of plywood to cover up your tires to prevent the sun’s damaging rays from
further deteriorating your tire. Two: park your trailer on concrete or some sort of
pavement. If your only option is grass, you might want to use your plywood and
place it under the tire. Three: your best option, perhaps, would be to remove your
tires and put them in your garage. That way, it’ll be harder for a thief to come
and take your trailer tires. I’m Ted Sensenbrenner, one of the BoatUS Trailering guys, and I will see you in the pages of BoatUS Magazine and on

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  1. Thanks …good video. Any downside to E-Rated tires? I have an 8000 lb rig and want extra tire to make trips to the Keys safer. Bill – Vero Beach, FL. Are US brands better than tires made in China?

  2. so the advice on removing trailer tires and storing them in your garage, is only to prevent a thief? That has not much to do with this trailer tire tips and CARING video..

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