Tire Replacement Recommendation for a H78-14 Trailer Tire

Question

Question:

the replacements for h78-14 are way to short for my travel trailer. what can i do?

asked by: Rachell

0

Expert Reply:

From the research I did it looks like your H78-14 tires are 27.8 inches in diameter. Which the closest size we offer that is compatible is the ST215/75R14 like Karrier ST215/75R14 Radial Trailer Tire # AM10229. This tire has a diameter of 26.8 inches which would be about an inch shorter in diameter than what you have.

Is that too short? What problems will you experience if your tires aren't as tall as your current ones? Ground clearance? If so, you might be interested in a Dexter axle over-under kit like part # K71-385-00 if you have a 3 inch axle or a part # K71-384-00 if you have a 2-3/8 inch axle. This will take your axles and put them below your leaf springs for additional ground clearance.

Another option you have is to upgrade your wheels to 15 inch wheels. The tires available for 15 inch wheels are bigger in diameter at about 28.4 inches. The size tire you would want is ST225-75-15. The wheel you need will depend on the bolt pattern of your trailer hubs. I attached an FAQ on how to determine bolt patterns for you to check out also.

I attached an FAQ on trailer tires for you to check out as well. If you have a 6 on 5-1/2 inch bolt pattern you would want the wheel and tire part # AM3S870, if you have a 5 on 4-1/2 inch bolt pattern you would want the part # AM3S862.

expert reply by: Jameson C

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Answer 1

There are a couple of different size modern equivalents to the 78-14 tire size. But for an H78-14, you would need to use an ST215/75-14, see link. If you just want tires, we have bias tire #AM1ST90 and for a radial we have #AM10229. Make sure not…

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Answer 2

I was able to look up the owners manual of your 2015 Little Guy 6 wide trailer and found that it has a tire size of 205/75D14 mounted on a wheel that has a 5 on 4-1/2 inch bolt pattern. So for a spare the Loadstar ST205/75D14 Bias Trailer Tire with…

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Answer 3

The main difference between a radial ply and bias ply tire is how the tire is constructed. The cords underneath the tire are run in different directions. On a bias tire, the cords run at a 32 degree angle from the direction of travel and on a radial…

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Answer 4

You can potentially switch from ST205/75R14 tires and wheels to ST205/75R15 tires and wheels but you first need to make sure that there is enough clearance all around the existing tires for the larger size. The 14s that you have now are abut 26.3…

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Answer 5

Our trailer tire and wheel packages do not come balanced as they do not require it. Trailer wheel and tires are designed to support heavy loads and generally not looked at for a smooth vibration free ride. That is the same reason you virtually never…

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Answer 6

You may be able to add larger tires if you use a lift kit, though you would also have to get different wheels for the tires to fit. In regards to clearance, with trailer tires, the general rule of thumb is you want at least 3" of clearance from…

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Answer 7

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 8

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 9

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 10

Load range B trailer tires are going to have a lower capacity than C load range tires. Basically that, psi rating, and the ply rating are the only differences. A higher load range tire would last a little longer than lower load ranges of the same…

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Answer 11

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 12

The three most common lug stud sizes for a trailer are 1/2"-20, 9/16"-18, and 5/8"-18. In order to make sure you get the correct lug nuts you need to measure the lug studs on the trailer now as we have no way to look this up for…

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