Replacement 16 Inch Wheels for 2017 Grand Design Momentum 349M

Updated 10/21/2026 | Published 10/19/2026

Question:

Im looking to buy 4 of your LH39FR 16x6 rims - 8 on 6.5 glossy black. They appear to be the exact rims that came on my Y2017 Momentum 349M Toy Hauler 17,000 gvw. I recently discovered two rims had cracks, so i wanted to confirm these are the correct rims for this model. I could not find any other HD rims to match this.

asked by: Justin G

Expert Reply:

Hey Justin! The Aluminum Liger Trailer Wheel # LH39FR will fit your 2017 Grand Design Momentum 349M. Grand Design used several different wheel styles on these trailers, but we have confirmed this was one of the styles used on other Momentum models.

The # LH39FR measures 16" x 6" with an 8 on 6-1/2" bolt pattern and has a 4,080 lb capacity, so it will work with your 7,000 lb axles. This lines up with their parts site, but I would still make sure the size, bolt pattern, and appearance match your existing wheels before ordering.

If you want to send me a picture of one of your original wheels, I'd be happy to compare it for you.

Any idea what caused your existing rims to crack?

expert reply by: Robin H

Aluminum Liger Trailer Wheel
(click to enlarge)

Monty H.

10/21/2026

I had to replace one rim of 6 original rims on my GD 376TH. No one had my original rim available except for etrailer..i even had two tire dealerships working on it and could not come up with just one replacement. I thought for sure that i was going to have to break down and have to buy all 6-new rims to replace the originals for them all to match! It was a little of a hassle for etrailer to back order the one rim on 4-different deadline delivery dates but i stuck it out and waited and finally after 3-months i received my new rim! It was not etrailer’s fault at all! It was a manufacturing problem from China! Alas, i am back to normal once again and i will not hesitate to use etrailer in the future again!

Robin H.

10/21/2026

@MontyH glad we were able to get you the matching wheel so you didn't have to replace all six! Thanks for sticking with us through the delays and sharing your experience.

Anthony

10/21/2026

I purchased these rims to replace one that cracked. It was the exact same wheel that came with the trailer. After another rim broke I replaced all four with steel rims. The steel doesnt look as good as the aluminum rims, but I haven't been stuck on the side of the highway changing a flat since going to the steel rims.