What Does JJ Mean on Trailer Wheel Size

Question

Question:

Im looking for a 15 x 6 JJ wheel. I dont see anything that says JJ. Can you please give me options

asked by: John G

0

Expert Reply:

The "JJ" that you mentioned finding on the wheel size listed for the units mounted to your trailer refer to the contour of the bead seat on the wheel, essentially its shape ( "J" indicates the shape of the letter J). This isn't typically something you need to be worried about in terms of fit when looking at replacement wheels for your trailer or existing tires.

The Dexstar Steel Mini Mod Trailer Wheel part # AM20539 is a 15 by 6 inch wheel like you mentioned needing.

expert reply by: Jameson C

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Answer 1

Thank you for reaching out! The best thing for your situation is to go with the 3,500 lb Dexter Axle #T3584F-8974 you are looking at. While you can upgrade your axles to the 5,200 lb #e55GR, you won't really see a benefit from it unless you also…

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Answer 2

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 3

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 4

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

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Answer 5

The determine the correct replacement leaf spring on your 2021 Coachmen 259FKDS you'll need to lift your trailer frame so the spring is hanging freely and then measure from center-eye to center-eye, then for the equalizer you need to measure…

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Answer 6

Thank you for providing the specs for the suspension components that you already have. Correct hanger spacing really depends on the components being used such as springs, hangers and equalizers. Most of the hanger spacing dimensions that we have are…

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Answer 7

Hey Phil! Thanks for getting back to me with those measurements! We have a leaf spring that is an exact replacement but I am guessing it's the pricey one you referenced. It is the 4-Leaf Double-Eye Spring for 4,400-lb Trailer Axles - 25-1/4"…

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Answer 8

There is no exact way to determine the leaf spring length. The best way to determine the length for a replacement is by measuring the existing leaf springs. The hanger distance and shackle length can help you get a good idea, but you're looking…

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Answer 9

You can use leaf springs that are rated higher than the axle without any issues as long as they measure the correct measurement for your trailer. For example the 6-leaf double eye spring for 7,000 lb axles part #e64SR measures 24-7/8" eye to…

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Answer 10

Hey Thomas, the most important factors for picking out a replacement leaf spring for a trailer are matching axle capacity and length. Getting the same amount of leaves in the spring pack is actually not a huge priority so I wouldn't worry too…

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Answer 11

The BTR and BT8 denotations refer to the spindle, not the trailer hub. The difference between a BTR and BT8 spindle is that the BTR spindle uses a 1.063" diameter L44649 bearing and the BT8 spindle uses a 0.99" diameter L44643 bearing. In…

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Answer 12

I currently have three diffrent self-adjusting assemblies for your boat trailer with 10" x 2-1/4" electric drum brakes which are attached for you below. eTrailer Electric Trailer Brake Kit part #AKEBRK-35-SA (3,500 Axles) Dexter…

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What Does JJ Mean on Trailer Wheel Size

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