Recommended Higher Speed Rated Tires For Harbor Freight Trailer W/ 4.80-12 Tires

Question

Question:

I would like to go ahead and replace the axle on the trailer. It has a hub face measurement of 56-1/2".

asked by: Michael G

0

Expert Reply:

Typically on a trailer the only part that has a speed rating is the tire itself, though you will need to contact the manufacturer of the trailer to confirm this.

Based on the tag shown in your picture your trailer uses a 4.80-12 so for a high speed replacement we have the Taskmaster 4.80R12 Radial Trailer Tire - Load Range C # TT48012C which will be an exact replacement, but has an 81 MPH speed rating.

Should you find that the hub has a speed rating, just let me know the bearing combination and I would be happy to check if there is a compatible higher rated hub though harbor freight trailers typically use a very odd bearing combination.

I included a video of the # TT48012C for you to take a look at.

expert reply by: Samuel C

0

Haul Master Trailer Axle Tag
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Haul Master Trailer Spec Sheet
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Michael

9/7/2021

I would like to go ahead and replace the axle on the trailer. It has a hub face measurement of 56-1/2".

Reply

Samuel C.

9/7/2021

I would be happy to help! We do not have an axle that has the 56-1/2" hub face to hub face measurement your current axle has, but we do have an axle-less option that will work. I recommend the Timbren Axle-less # ASR2000S01 which have a 2000lb rating which is plenty for the 1195lb capacity of your trailer. This option bolts directly to the frame of your trailer and replaces your current leaf spring suspension with progressive rate AEON main springs that do a fantastic job of of absorbing road shock giving you quite the upgrade of your current suspension. I included videos of the products mentioned for you to take a look at.

Reply

Answer 1

You'd need to go with the tire part #TT48012C as it's only option for 12 inch wheel that has an 81 mph speed rating and then for a matching wheel part #AM20124 which has the 4 bolt pattern you need. We also don't have a way to mount them…

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Answer 2

The smallest diameter 13 inch trailer wheel and tire will have a diameter of 24.1 inches (ST175/80-13). There are 3 common 12 inch trailer tire sizes: 4.80-12 has a diameter of 20.5 inches, 5.30-12 has a diameter of 21.9 inches, and 145/80-12 has a…

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Answer 3

The Kenda Loadstar ST175/80D13 Bias Trailer Tire #AM3S120 that you referenced is going to close that trailer frame to tire gap by almost a full inch. This would put the new tire much too close to the frame on your Harbor Freight Trailer. The issue is…

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Answer 4

From my research on the Harbor Freight 4x8 folding trailer uses 4.80-12 tires on a 12 inch wheel for the 1195 lb capacity trailer and a 5.30-12 for the 1720 lbs capacity trailer. It is a good idea to check your existing tires to see which size they…

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Answer 5

The first problem is that you are running lower air pressure than what the tire is rated for. Trailer tires should ALWAYS be inflated to the maximum air pressure as indicated on the tire. The reason is that trailer tires are constructed with a…

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Answer 6

I don't think that your wheel size (or lack thereof) has anything to do with the bearings on your HF trailer drying out as much as it is likely that the seal blew out from overfilling the grease or poor installation. This isn't uncommon when…

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Answer 7

There are a couple of factors that will determine if you are able to use a larger size tire and wheel on your trailer. First you will want to make sure that your trailer hub will accept a larger size wheel. Many of the trailer hub assemblies we offer…

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Answer 8

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 9

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 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

Your math is correct in your trailer weight load example. If a fully-loaded tandem axle trailer weighs 4000-lbs then each of the 4 tires will bear 1/4th of that load, or 1000-lbs. In this case a tire rated for 1300-lbs would provide a good safety…

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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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Recommended Higher Speed Rated Tires For Harbor Freight Trailer W/ 4.80-12 Tires

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