Which Roadmaster Comfort Ride Kit Fits Grand Design 375RES

Question

Question:

I have a Grand Design Solitude 375RES with 7000lb axles and double eye leafs. We do a lot of traveling and seem to destroy equalizers and springs every 10k miles. I want to upgrade to 8000lb axles. Will the Roadmaster 2570-2580 be the kit I am needing? Will I have to do any modifications to my current hangers?

asked by: John M

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Expert Reply:

The Roadmaster Comfort Ride kit part # RM-2470-2580 would be correct kit to use with the 8k axles you plan to install on your Grand Design 375RES. Your current hangers should be in the correct location already.

expert reply by: Jameson C

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Answer 1

I contacted MORryde and this does happen from time to time as the weight of the trailer can spread out the axles due to downward pressure on the springs/suspension. Odds are the 35" wheel base #MR27ZR will be the correct one for you, but…

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Answer 2

To correctly measure a leaf spring, you'll want to jack the trailer up on jack stands so the axle is hanging freely, then measure directly across from the center of one spring eye to the other, as shown in the provided diagram. The height of…

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Answer 3

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 4

Well shackle length is mainly based on the height difference between the front and rear hangers. The rear hanger normally doesn't hang as low as the front so that the shackle can offset the difference and add the ability to move. What is the…

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Answer 5

For a single axle trailer, you want the shackle strap to be able to move so that you have the spring deflection needed for your suspension. Angled like the photo or even almost vertical is fine you just don't want the shackle strap to bind and…

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Answer 6

When replacing shackle straps they should be the same length as the ones that were previously on your tandem axle trailer; replacing them with longer straps will result in additional play in your trailer suspension which could lead to additional wear…

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Answer 7

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 8

Hey Patrick, so for your leaf spring upgrade I am going to need to know a couple of things before I can get you over to the right part. Specifically, the length from eye to eye, the spring width, leaf thickness, and the number of leaves. From here I…

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Answer 9

Yes, going from a 4 leaf to a 6 leaf spring would add slightly to your ride height. For example, if the current 4 leaf spring has 3/8" thick leaves, and you go to a 6 leaf spring with 3/8" thick leaves, you would be adding 3/4" of…

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Answer 10

The hangers you currently have on your trailer are ones I have run into before. That being said, I spoke with MORryde and the #MR27ZR will still fit your trailer, but there is a modification that will need to be made. You’ll have to trim according to…

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Answer 11

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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Answer 12

Since Grand Design is kind enough to list certain parts for their trailers I can confirm you have a 33" wheelbase on your 2020 Grand Design Transcend 27BHS. This means the MORryde Rubber Equalizers #MR87ZR will fit your trailer. Although I'm…

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Which Roadmaster Comfort Ride Kit Fits Grand Design 375RES

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