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Old 02-01-2025, 02:56 PM   #1
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Phaeton versus Bus

Hello

I am in the market for a used 2018 to 2022 37Ap, 40Ap Allegro Bus
But I see that the Phaeton looks good.
Question is.
Why is it $75 to $100k less than the Bus? (new msrp) What did they cut on the Phaeton?
is the frame and suspension the same? steering? Insulation? Ride quality?
no side rad is one thing I see.

thank you in advance
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Old 02-02-2025, 08:56 AM   #2
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Hi Norm
If you go to my post just below it, “Why a Phaeton?” there are lots of good answers that may help you.
Good luck!
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Old 02-02-2025, 11:14 AM   #3
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But that thread doesn't answer the OP's questions about why a Bus is more. That thread is just about Phaetons.

You could go to Tiffin's website, download the brochures & compare/contrast. Or wait for Bus owners to chime in.
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Old 02-02-2025, 11:28 AM   #4
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The things on "this years" Allegro Bus will be on next years Phaeton
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Old 02-02-2025, 11:31 AM   #5
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All about wants and preferences. Phaetons come with most options available on a bus. What made it for me was the floor plan. A couple of things I didn’t get, but wasn’t worth the nearly 100 k difference, though I wouldn’t mind owning a bus.
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Old 02-02-2025, 11:44 AM   #6
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Biggest difference is the chassis. Phaeton (except for one model, I forget which one) is on a rear radiator Freightliner chassis with beam front axle. Bus comes on a Powerglide chassis built by Tiffin with side radiator, larger fuel tank and independent front suspension. There are also an assortment of house items that are standard on the bus that either aren’t available or options on the Phaeton.
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Old 02-02-2025, 12:13 PM   #7
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Side versus rear radiator is the first major step. Different chassis. The side radiator adds a lot of cost and complexity. Beside improved maintenance access it also allows the rear of the body to be shorter.
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Old 02-02-2025, 01:04 PM   #8
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The 40IH and the 44OH Phaetons are built on the Power Glide chassis formerly built by Tiffin but in the new models being built by Freightliner to Tiffin's specs. The Power Glide raised rail chassis allows those those models to have a flat floor front to rear with no rise in the back for engine. The bays are 7" taller than Freightlner bays and they have independent front suspension. The major difference between Phaeton and Bus is the radiator and some amenities. The Bus has a side radiator and the Phaeton rear. The Bus has more bells and whistles like all of the window shades are powered, total electric (which is optional in the Phaeton) and some fancier decor items. The Bus has the top rail sides that hide the roof structure where the Phaeton does not have it in those years but does offer it as an option in newer models.
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Old 02-02-2025, 01:43 PM   #9
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Quote:
Originally Posted by S W Brown View Post
The things on "this years" Allegro Bus will be on next years Phaeton
What he said. I had to look at 2020 Phaetons to find the newer features that we got in our 2019 Bus.
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Old 02-07-2025, 08:47 PM   #10
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Late 2018 and after bus has Girard awnings.

Bus features (based on memory in 2018). Some already mentioned:

* Side radiator
* More powerful engine (Phaeton can be re-programmed)
* IFS
* Air leveling (We REALLY like this)
* 150 Gallon fuel tank vs 100 Gallon
* Aquahot 450 vs 400 (not sure on this one)
* Heated floors standard (upcharge on Phaeton)
* 2018+ 24K rear axle and 17K front
- We're right at 24K now with full fuel and water
* All electric is upcharge on Phaeton
* more expensive paint job (exterior slide walls)
* Electric shades (not sure what Phaeton offers)
* Bus has electric toilet (maybe a negative)
* Larger tires and rims (I think)
* Roof rails (already mentioned)
* Not sure on this (3 15K acs)
* Maybe cherry wood in bus vs something else in Phaeton
* Different interior trim out - which really is based on preferences...
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Old 02-07-2025, 09:44 PM   #11
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The Phaeton 40IH XSH on the Powerglide chassis is a Bus under the skin. (I am told by Tiffin)
Independent front suspension,
3 AC/HP, mine is a 450 hp (now) cost me $420.00. But yes rear radiator.

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Old 02-08-2025, 07:48 AM   #12
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Quote:
Originally Posted by ekim View Post
Late 2018 and after bus has Girard awnings.

Bus features (based on memory in 2018). Some already mentioned:

* Side radiator
* More powerful engine (Phaeton can be re-programmed)
* IFS
* Air leveling (We REALLY like this)
* 150 Gallon fuel tank vs 100 Gallon
* Aquahot 450 vs 400 (not sure on this one)
* Heated floors standard (upcharge on Phaeton)
* 2018+ 24K rear axle and 17K front
- We're right at 24K now with full fuel and water
* All electric is upcharge on Phaeton
* more expensive paint job (exterior slide walls)
* Electric shades (not sure what Phaeton offers)
* Bus has electric toilet (maybe a negative)
* Larger tires and rims (I think)
* Roof rails (already mentioned)
* Not sure on this (3 15K acs)
* Maybe cherry wood in bus vs something else in Phaeton
* Different interior trim out - which really is based on preferences...
Ekim really nailed a lot of the pertinent differences but I have a couple of additions and corrections.
The AquaHot is a 450D in both units, though this is an option on the Phaeton when it comes with the “all electric” option. Just personal preference I would buy a propane Phaeton, not “all electric”.
Heated floors were an option on both the Bus and Phaeton. Definitely get them! This, in addition to a king size bed, were non negotiable for me.
The Bus does have larger tires, 305/22.5 versus Phaeton 295/22.5. Don’t need to inflate them as high for a given weight of the motorhome. Marginally better ride.
The interior electric shades in the Bus are a bomb. Didn’t think much about this feature until I got to use them. Love them now, would be hard to go back to manual.
The 150 gallon fuel tank in the Bus is meaningful. Didn’t think much of it at the time. It gives you better flexibility in finding lower priced fuel. For instance I only have to add a partial fill up of fuel once during my trips in and out of CA instead of being stuck with two or more full fill ups at outrageous prices. It was also a significant benefit when planning fuel stops on my trip to Alaska.
The digital dash started in 2020 on the Phaetons (and Busses I believe). I really like it versus the analog gauges used in previous years.
The AP is a great floor plan. I love it for many reasons but also because I find a half bath in any sub 45 foot model a waste of space. Just my personal opinion.
The Phaeton version of the Bus 40AP floorplan was the Phaeton 40AH (Phaeton did not have a 37 foot version of the AH). This motorhome was built on a Freightliner chassis, not Powerglide as was the bus. The Freightliner motorhome did not have a raised rail chassis resulting in less storage underneath, lower ceilings and a step up where the engine access panel was in the bedroom, i.e. not a flat floor in the bedroom.

Final thoughts about 37AP vs 40AP.
Easier to overload the rear axle on the 40AP due to extra weight of the three feet. The Busses are a little porky due to the quantity of the materials used to build them versus the Phaetons. Second, the 37AP will make it easier to get onto the smaller and older National, State and County parks, and National Forest campgrounds. If you are an RV Park/Resort kind of guy this is immaterial.

One caveat to my comments. I only have direct experience with 2020 and 2021 Phaetons and Busses having owned both.
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Old 02-08-2025, 09:07 AM   #13
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Quote:
Originally Posted by zombiewoof View Post
The Bus does have larger tires, 305/22.5 versus Phaeton 295/22.5. Don’t need to inflate them as high for a given weight of the motorhome. Marginally better ride.

The digital dash started in 2020 on the Phaetons (and Busses I believe). I really like it versus the analog gauges used in previous years.
Great writeup.

2 small corrections. The Buses have 315/22.5s, at least in the 45OPPs and my 2019 has the digital gauges. It was the first year in the Buses (2020 in the Phaetons).
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Old 02-11-2025, 07:55 PM   #14
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Phaeton to bus

We had a 2019 40QKH and we went to a 21 40AP bus, got at the Tucson AZ rally.
450 vs 380
Power glide vs FREIGHTLINER
Independent front suspension
150 gallon fuel tank vs 100 really makes a difference in travel
Better overall quality
We love it!
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