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Old 12-16-2017, 12:50 AM   #1
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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.
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Old 12-17-2017, 07:01 PM   #2
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On Tiffin again huh... why is this a Tiffin topic???
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Old 12-17-2017, 07:42 PM   #3
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Quote:
Originally Posted by trx430ex View Post
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.
What are you asking?
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Old 12-17-2017, 08:41 PM   #4
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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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Old 12-17-2017, 10:10 PM   #5
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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.
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Old 12-17-2017, 10:13 PM   #6
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Quote:
Originally Posted by trx430ex View Post
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?
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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Old 12-17-2017, 10:39 PM   #7
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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.
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.
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Old 12-18-2017, 12:02 AM   #8
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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.
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Old 12-18-2017, 12:26 AM   #9
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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
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Old 12-18-2017, 08:07 AM   #10
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The 24" rims and tires used by OTR trucks are just that, 24". NOT 24.5"
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Old 12-19-2017, 03:48 PM   #11
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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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Old 12-21-2017, 10:01 PM   #12
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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.
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Old 12-23-2017, 07:32 PM   #13
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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.
Dually.
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