Want To Add Second Axle And Tires To Single Axle Karavan Pontoon Trailer
Updated 10/30/2025 | Published 02/04/2025
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Question:
Have a single axle karavan sissor pontoon trailer. Want to add a second axle and tires. Current axle is 3500lb with 530-12 loadstar load range c. Can you help?
asked by: Bill T
Expert Reply:
Hello Bill, thanks for reaching out. We do offer the 5.30-12 tire/wheel combos like the Kenda # AM30850 which comes on a galvanized 5 on 4-1/2" wheel.
As far as the axle, we do carry some 3.5K axles that may work for you, but I will first need to know the hub face (HF) length, and spring center (SC) length of the current axle. It will be critical that the new axle is identical to the current. There should be a tag on the axle that has this info, or if not you will have to measure.
For example, the Trailer Axle # e72GR has a 89" HF and 74" SC. It also has a 4" drop and 5 on 4-1/2" hubs.
Reply below with the HF and SC of your axle and I am happy to look into it and see if we have anything for you.
Product Page this Question was Asked From
Trailer Axle with Idler Hubs - 4" Drop - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs
- Trailer Axles
- Leaf Spring Suspension
- Standard Grade
- Idler Hubs
- 3500 lbs
- 5 on 4-1/2 Inch
- 74 Inch Spring Center
- 89 Inch Hub Face
- Drop - 4 Inch
- etrailer
more information >
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Jesse M.
10/30/2025
Hey Bill, were you able to get the hub face and spring center measurements from your current axle? Once you have those, I can help confirm if one of our 3.5K axles will match. Let me know what you find so we can narrow it down.