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Old 03-14-2019, 02:32 PM   #1
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Join Date: Mar 2019
Posts: 5
National 396 Tropical tire replacement

New to this forum
looking to get help on replacing my tires just bought this unit 2005 national tropical 396 lx and want o replace the front tires
they have 255 80r 22.5 g rated tires on it but was looking to put on the toyo 265 75r 22.5 g rating not sure if I can do that
they are .5cm shorter and .4cm wider/
does anyone know
thanks in advance

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Old 03-14-2019, 05:04 PM   #2
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Rick 2005 Dolphin 5376's Avatar
National RV Owners Club
Workhorse Chassis Owner
Join Date: Jul 2006
Location: San Jose, Ca.
Posts: 1,312
I have toyos on our Dolphin and love them but I replaced all 6 at the same time. If you have abs, the system may get confused with the different tire circumference front to rear

Rick and Julia
2005 Dolphin 5376, W24, Solid Body Paint, Koni FSD's
Looking for a new toad
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Old 03-14-2019, 05:43 PM   #3
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Workhorse Chassis Owner
Join Date: Oct 2017
Location: Florida
Posts: 4
I had same size tires on my
National Seabreeze. Went to a 255/70r22.5 about same height but much wider thread area. Helped with tracking and overall handling. Also tire much less in cost and size you can get anywhere .
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Old 03-15-2019, 08:27 AM   #4
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National RV Owners Club
Join Date: Mar 2018
Location: Littleton, CO
Posts: 21
I just went through the same tire game. I have a 2006 T350 Tropical LX. The tires that were on it were 255/70R 22.5 Load Range H. The brochure shows the LX version should have come with 275/70R 22.5 H. Be sure and check your maximum axle weights and make sure the tire you choose exceeds this. Since Toyo did not make a 275/70R 22.5, I decided to purchase the Double Coin RT600 in the 275/70R 22.5 H. Now I do not need to max out my air pressure for maximum load rating and it rides a bit softer. Double Coin tires were about $1k less than the Toyos for all 6 tires.
"If you think it could rattle, it will"
2006 National Tropical LX T350, CAT C7 350HP, MH3000
2014 F150, SMI Air Force One, Blue Ox Avail
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Old 03-15-2019, 05:43 PM   #5
National RV Owners Club
Freightliner Owners Club
Join Date: Sep 2007
Posts: 31
I’ve been through this twice with my 2005 Tropical LX as well. Mine had original Michelin 255-70-22.5 tires on it when I purchased. I saw the brochure calls for 275-70-22.5, as does the sticker in the compartment over the driver, but both times I kept what was already on it.
2005 National Tropi-Cal LX
350 HP Cat/Freightliner
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Old 03-20-2019, 04:04 PM   #6
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Just bought a 2005 ttropical lx to pick it up monday had a 28 class c fleetwood tioga gona need to learn more and drive differeent lol
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Old 03-20-2019, 04:09 PM   #7
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Join Date: Mar 2019
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Heh guys can anyone tell me how to join the national rv club just bought mine
thanks in advance
2005 national tropical lx 396
cat c7 freightliner
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Old 03-20-2019, 05:47 PM   #8
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Richard S.'s Avatar
National RV Owners Club
Ford Super Duty Owner
Join Date: May 2007
Location: El Cajon CA
Posts: 1,779
The National RV club folded when NRV filed bankruptcy and closed the factory DEC. 2007
2007 Sea Breeze LX 8321 Ford Chassies
2004 Ford Ranger Edge
El Cajon CA.
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Old 03-20-2019, 05:50 PM   #9
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Do you know what size rims are on a tropical 396lx/

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