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Old 03-18-2014, 09:47 AM   #1
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Why the EZ-4 / EZ-5 Difference?

Greetings to all. Besides the obvious hardware, can anyone tell me the difference or need between RoadMaster's EZ-4 and EZ-5 baseplate? Now that I have my flat towing capable toad, I'm ready to get a baseplate. I prefer RoadMaster and was all set to get the 523173-4 (EZ-4 for a 2014 Chevy Sonic) baseplate when I learned that I still had to get additional brackets and a cross bar to attach a tow bar. For the same price, I can get the 523173-5 (EZ-5) baseplate which terminates with arms that look like they will attach directly to a tow bar... no additional hardware required. Does anyone know of a reason why someone would get the RoadMaster EZ-4 baseplate when they can get the RoadMaster EZ-5 baseplate which will do the same thing with less hardware (less places for something to go wrong)... or am I missing something???
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Dewey & Sharon
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2015 Tiffin Allegro Bus 45LP
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Old 03-18-2014, 10:11 AM   #2
Join Date: Mar 2013
Posts: 53
I would get the one on the right. You won't need the cross bar on the front and it will be a much cleaner install with less hanging off he front.

I think the 2 types exist because some cars need the cross bar if they are unibody construction and do not have a cross bar as part of the mount on the car. On full sized pickups and SUVs you can buy either style too.

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Old 03-18-2014, 06:30 PM   #3
"Formerly Diplomat Don"
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Location: Moorpark, Ca.
Posts: 7,199
That's the difference....the crossbar. I never understood why they had both. I thought on some cars they needed the crossbar for strength, but when they offer both for the same car, it doesn't make sense.

Note: I had the crossbar on my first Roadmaster base plate and it allowed me to use their quick connect tow cables where the other model doesn't....maybe that's it.
Don & Mary
2014 Newmar Dutch Star - All Electric - 450 ISL
2016 GMC Canyon 4WD Crew Cab
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Old 03-19-2014, 05:47 AM   #4
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Many thanks to all for the answers and assistance. I did hear back from RoadMaster concerning the EZ-4 -v- EZ-5. It basically boils down to how you will be using your baseplate. The EZ-4 requires the crossbar, but is flexible in that additional items can be used with it, such as, EZ safety cables and Guardian Rock Shield, while the EZ-5 is restricted to pretty much a MH mounted RoadMaster tow bar only (I will add "or a tow bar that works with RoadMaster baseplates").

Again, thanks to all...
Dewey & Sharon
Southern Maryland suburbs of DC
2015 Tiffin Allegro Bus 45LP
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