Upgrading Trailer Axle Capacity - Do I Need To Replace Both Axles?
Updated 09/29/2025 | Published 09/07/2025
Question:
2020 Forest River Evo T2360 Rear tires wearing on the inside, have read the axles are barely rated for the weight of the trailer plus stuff. Each axle is rated for 3774 lbs I think. Seems the axle is now sagging, have already replaced springs and hardware, thinking about a 5200 lb rated axle.......do I need to replace both axles? Front tires wearing okay......thoughts?
asked by: John M
Expert Reply:
Hello John, thanks for reaching out. If you will be upgrading your axle capacity, yes, you will need to replace both axles. Both axles must be equal.
It is pretty common for RV manufacturers to use axle that are underrated for the GVWR. They do this to cut costs, and because the axle technically don't bear the full weight of the camper. About 10%-15% of the trailer weight is on the hitch or the jack.
If you are wanting to look at new axles, I will need to know the hub face (HF) length and spring center (SC) distance for your axle. There should be a sticker on the axle that has this information. Let me know and I am happy to look into it and see if we have something for you.
Product Page this Question was Asked From
Dexter Heavy-Duty Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double Eye Springs
- Trailer Suspension Parts
- Suspension Kits
- Boat Trailer
- Snowmobile Trailer
- Double Eye Springs
- Tandem Axle
- Dexter
more information >
Featured Help Information
Instructions
Continue Researching
- Article: How to Accurately Measure Trailer Leaf Springs
- Article: Double-Eye Trailer Suspension System Review
- Q&A: How to Find if Dexter Heavy-Duty Suspension Kit Will Fit on Trailer
- Article: 5 Tell-Tale Signs It’s Time to Replace Your Trailer’s Leaf Springs
- Q&A: Cushioned Equalizer to Replace Dexter 13-104
- Q&A: Replacement Leaf Springs for 2022 Grand Design Solitude With 7k Axles
- Q&A: Best Suspension Upgrade for 33" Tandem Axles: Road Armor vs Dexter EZ Flex for Ember 22ETS
- Q&A: Replacement Landing Gear and Equalizers for a 2008 Keystone Cougar 5th Wheel
- Q&A: Can I Use Heavier Rated Leaf Springs on Trailer Without Causing Damage
- Q&A: Dexter Heavy Duty Greasable Shackle Kit Needed
- Article: How to Tell the Weight Rating of a Trailer Axle
- Article: Trailer Wiring Diagrams
- Article: How to Raise Your Travel Trailer Height
- Article: Spring Towing Readiness Checklist
Jesse M.
9/29/2025
Hey John, did you have a chance to find the hub face length and spring center distance for your axle? I'm happy to help you find the right solution once you have that information.