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12-15-2017, 11:50 PM
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#1
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Senior Member
Join Date: Jun 2017
Location: Worcester Pennsylvania
Posts: 1,063
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A call to a bigger rim.
A 30 inch rim, scale keeps going up, the tires can match. Let's go there.
Tire tech is way past 22.5.
Think about it, bigger rims equal bigger brakes.
All moving up in scale together. Twin super single's pay more dividends in twins VS tag. Tag is like a dolly toad, in super single math.
I apologize to all that think I am harsh, but I am just running the math.
Alcoa can forge 30 inch rims.
__________________
2006 Fleetwood Bounder 35E Trek pure Trike, electric, 50 mile range, 7000 ,miles the get everything runner. To be toad list Done, Ford E450 toad. Stay & Play active brakes.
Full-time since 2018. LG 4.5 cu ft washer/dryer.
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12-17-2017, 06:01 PM
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#2
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Senior Member
Tiffin Owners Club
Join Date: Mar 2012
Posts: 1,702
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On Tiffin again huh... why is this a Tiffin topic???
__________________
Dewey & Sharon
Southern Maryland suburbs of DC
2022 Tiffin Allegro Bus 40IP
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12-17-2017, 06:42 PM
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#3
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Senior Member
Join Date: Oct 2013
Posts: 779
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Quote:
Originally Posted by trx430ex
A 30 inch rim, scale keeps going up, the tires can match. Let's go there.
Tire tech is way past 22.5.
Think about it, bigger rims equal bigger brakes.
All moving up in scale together. Twin super single's pay more dividends in twins VS tag. Tag is like a dolly toad, in super single math.
I apologize to all that think I am harsh, but I am just running the math.
Alcoa can forge 30 inch rims.
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What are you asking?
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12-17-2017, 07:41 PM
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#4
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Registered User
Join Date: Aug 2017
Posts: 44
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Let's not mention how if we go bigger on wheels and tires they are so much more expensive!!
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12-17-2017, 09:10 PM
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#5
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Senior Member
Join Date: Jun 2017
Location: Worcester Pennsylvania
Posts: 1,063
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I earlier asked to have the thread deleted because I too thought it was a silly idea the next morning. But after having some time to think about it, the math does make sence & safety. All wheels having been scaling up since the invention of the wheel. 16, to 19.5 to 22.5,,, but that's it. It hits a ceiling at 22.5, even with cement trucks. What we are left with is this insanely tall sidewall the bigger we get.
I would wager if in the bigger size tires of 22.5, the tech exists to make a run-flat tire if it could be taken to a 28 or 30 inch rim. Chopping that sidewall depth in half, this would make the death spiral of a blowout,,, mute. (is it moot or mute)?
Sure it would be more expensive as it would be an oddball tire & not mass produced. But, at what cost would one pay to render the dreaded blow out mute?
Take that 12 inch side wall back down to 6 inches. Which is in comparison to the stock sidewall height of a 16 or a 19.5. That seems to be the sweet spot safety/performance.
Bob Tiffin once bought a customer a 50% off an entire new set of tires for suggesting going to 22.5 with a different weight rating. I pondered on that decision, and I believe it was a paramount moment in Allegro to go 22.5. And I truly believe that moment has come again to push to 28- 30 inch rim. But maybe only a 26 inch on the Allegro line.
The chassis's have evolved, but the rims have not kept up with tire tech.
This would also push all the chassis lines another ton or % past every other manufacture for low cost. While offering more safety. All the bigger "rears" already exist, the chassis just needs to be ordered differently.
The biggest 22.5 tire, is just too big to fail.
__________________
2006 Fleetwood Bounder 35E Trek pure Trike, electric, 50 mile range, 7000 ,miles the get everything runner. To be toad list Done, Ford E450 toad. Stay & Play active brakes.
Full-time since 2018. LG 4.5 cu ft washer/dryer.
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12-17-2017, 09:13 PM
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#6
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Quote:
Originally Posted by trx430ex
I earlier asked to have the thread deleted because I too thought it was a silly idea the next morning. But after having some time to think about it, the math does make sence & safety. All wheels having been scaling up since the invention of the wheel. 16, to 19.5 to 22.5,,, but that's it. It hits a ceiling at 22.5, even with cement trucks. What we are left with is this insanely tall sidewall the bigger we get.
I would wager if in the bigger size tires of 22.5, the tech exists to make a run-flat tire if it could be taken to a 28 or 30 inch rim. Chopping that sidewall depth in half, this would make the death spiral of a blowout,,, mute.
Sure it would be more expensive as it would be an oddball tire & not mass produced. But, at what cost would one pay to render the dreaded blow out mute?
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Uhh, a lot of OTR trucks run 24" tires on the power unit so they already make larger tires and rims than 22.5's.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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12-17-2017, 09:39 PM
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#7
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Senior Member
Join Date: Jun 2017
Location: Worcester Pennsylvania
Posts: 1,063
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Quote:
Originally Posted by Mr_D
Uhh, a lot of OTR trucks run 24" tires on the power unit so they already make larger tires and rims than 22.5's.
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Yea,, but they are not putting them on your rig, that is coming in close to the same weight.
Just saying it would make it safer, to cut that sidewall height.
__________________
2006 Fleetwood Bounder 35E Trek pure Trike, electric, 50 mile range, 7000 ,miles the get everything runner. To be toad list Done, Ford E450 toad. Stay & Play active brakes.
Full-time since 2018. LG 4.5 cu ft washer/dryer.
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12-17-2017, 11:02 PM
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#8
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Senior Member
Join Date: Jun 2017
Location: Worcester Pennsylvania
Posts: 1,063
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A blow out on that tall 22.5, would just be a flat in a 28-30 rim. The same way as a 16 tire, is to the same way as a 19.5 is. And the rim can match existing spindle bolt pattern.
__________________
2006 Fleetwood Bounder 35E Trek pure Trike, electric, 50 mile range, 7000 ,miles the get everything runner. To be toad list Done, Ford E450 toad. Stay & Play active brakes.
Full-time since 2018. LG 4.5 cu ft washer/dryer.
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12-17-2017, 11:26 PM
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#9
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Senior Member
Monaco Owners Club Vintage RV Owners Club
Join Date: Sep 2014
Location: anywhere U.S.A, Currently back home in Thailand!
Posts: 4,245
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The tire Co.'s make 22.5 LP (low pro) and 22.5 tires with a taller side wall! They also make a 24.5 LP and a 24.5 tall tire and the 24.5 rims for tractor/trailers for commercial use. You could swap your MH out with 24.5 rims and the LP tires, if you want more rim, I guess? The mounting (10 hole) is the same! But the cost of the 24.5 tires is higher than the cost of 22.5 tires, and the taller wheel and tire would change your speedometer and your gearing, so in the long run, not sure you would want to do all that?
Not quite sure of your point, unless you are just wanting the
"Ghetto Look" Rail!
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Retired, and "Always on Holiday!"
1996 Monaco Windsor 38PB, "Mona" 275 HP., 8.3 Cummins, 3060 Allison 6 speed, 2001 PT Cruiser, "Bailey"
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12-18-2017, 07:07 AM
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#10
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Senior Member
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,527
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The 24" rims and tires used by OTR trucks are just that, 24". NOT 24.5"
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12-19-2017, 02:48 PM
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#11
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Senior Member
Tiffin Owners Club Winnebago Owners Club Ford Super Duty Owner iRV2 No Limits Club
Join Date: Jul 2014
Location: Ohio
Posts: 1,119
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I am staying with the duel tires on my drive axle. If one goes flat I can still get to a safe location to have it repaired. Can't do that with a single tire on the drive axles.
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Mike and Debbie: USAF Msgt Ret, DoD Civ Ret
DAV and Good Sam Lifetime Members
2014 Allegro Open Road 36LA/2014 Jeep Grand Cherokee/2018 Cherokee Trailhawk
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12-21-2017, 09:01 PM
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#12
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Senior Member
Join Date: Jun 2017
Location: Worcester Pennsylvania
Posts: 1,063
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Let me clarify, I am not saying get rid of duelly or changing the outside diameter of the the entire wheel.
What I am trying to say is to keep increasing the size of the rim past 22.5 when the sidewall gets above a certain height.
This turns a blow out on a large 22.5 into just a flat. Like a 16, or a 19, (there is no 19.5 as far as I know, sorry for bad data).
This returns the safety margin of the 22.5, back to the same level as a 16, or a 19 inch tire & rim.
I apologize for the confusion.
__________________
2006 Fleetwood Bounder 35E Trek pure Trike, electric, 50 mile range, 7000 ,miles the get everything runner. To be toad list Done, Ford E450 toad. Stay & Play active brakes.
Full-time since 2018. LG 4.5 cu ft washer/dryer.
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12-23-2017, 06:32 PM
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#13
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Senior Member
Join Date: Oct 2013
Posts: 779
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Quote:
Originally Posted by trx430ex
Let me clarify, I am not saying get rid of duelly or changing the outside diameter of the the entire wheel.
What I am trying to say is to keep increasing the size of the rim past 22.5 when the sidewall gets above a certain height.
This turns a blow out on a large 22.5 into just a flat. Like a 16, or a 19, (there is no 19.5 as far as I know, sorry for bad data).
This returns the safety margin of the 22.5, back to the same level as a 16, or a 19 inch tire & rim.
I apologize for the confusion.
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Dually.
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