Lowered dually tire options (19 outer, 16 inner)

[502ss]

It's almost time to pull the trigger on some wheels and tires for my lowered dually. I plan to run a 16 inner and a 19 outer which will be cut down from a 19.5 by teneasee wheel & tire. When talking to them they recommended a 245/40-19 and 225/60-16 combo but this only yields a 26.7" overall height compared to a stock 31.5" tire height. With a 4.10 gear I really can't run a 26.7" tall tire so I am thinking about a 245/55-19 and a 235/75-16 which yields a 29.7" height. I also want to run a taller tire so the rim/tire doesn't look lost in the wheel well. What are you guys running for 16/19 or 16/22 combo's? Pictures would be great if you got them. Here is the rim I am thinking of going with. It is an eagle 056




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[SCOTI]

I agree w/your tire selection vs. what TnWT has suggested. Their recommended tire combo would work for something super-low, but wouldn't look right on a mild drop.

My math says the inners would be slightly taller (.267"). I'm not sure how critical of a concern that is though. It could prob be diminished w/creative air pressures (little more in the outers, little less on the inners).

[502ss]

Originally Posted by SCOTI

I agree w/your tire selection vs. what TnWT has suggested. Their recommended tire combo would work for something super-low, but wouldn't look right on a mild drop.

My math says the inners would be slightly taller (.267"). I'm not sure how critical of a concern that is though. It could prob be diminished w/creative air pressures (little more in the outers, little less on the inners).

.267 is about 1/8" per side which can easily be adjusted for with air pressure. My setup is considered mild compared to some trucks on here but the front does tuck the 31.5" quite a bit. I never checked if the stock tires rub(and I can't now with the engine out). Anybody have any experience with a 29.5" tall tire on a truck with about a 4.5" drop in the nose?


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[Painter D]

I may be wrong but weren't people running into issues when towing with their duallies that had two different size wheels (16,19) in the back. If I recall correctly there was some issue with "extreme" tire wear.


Maybe someone else will chime in and correct me if I'm wrong.

[502ss]

Originally Posted by 69chevyshort

I may be wrong but weren't people running into issues when towing with their duallies that had two different size wheels (16,19) in the back. If I recall correctly there was some issue with "extreme" tire wear.


Maybe someone else will chime in and correct me if I'm wrong.

I had not heard that yet. Scotti, you ever heard that?
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[SCOTI]

Originally Posted by 502ss

I had not heard that yet. Scotti, you ever heard that?
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I've been searching for info on varying the tire sizing for the rear wheels but haven't seen much beyond what TnWT has posted on DS or the limited info shared by members of that site.

While tire pressure could be adjusted, the question would be how much to yield the 'best' height & will there be any impact as far as sidewall bulge & rubbing concerns between the two closely mounted duals.

[502ss]

Originally Posted by SCOTI

I've been searching for info on varying the tire sizing for the rear wheels but haven't seen much beyond what TnWT has posted on DS or the limited info shared by members of that site.

While tire pressure could be adjusted, the question would be how much to yield the 'best' height & will there be any impact as far as sidewall bulge & rubbing concerns between the two closely mounted duals.

Which is why I think it is important to keep the tire heights as close to each other as possible. A .25 difference in height is very close (.125 per side) I would imagine this height difference can be made up with a difference of 2-3 lbs of air pressure. That small difference should have little or no effect on the risk of bulge rub or excessive tire wear. If the heights were off .5 then that is a totally different story!
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[502ss]

There must be more people out there running 16/19 combo rear dual wheels??
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[cochino12]

Ttt

[502ms]

I will be in the market for a dually soon, can you explain the benefits of this specific swap? Does it prevent rubbing when lowered, or just reduce unsprung weight in the rear?

Love the wheel choice, too

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[texastrendz]

I ran a 16/19 combo for a while. It is going to eat up some tires. We tried all diffrent combos to resolve this issue with no success. Expect about 8k to 10k out of the tires unloaded. Loaded about 5k to fill safe.

[SCOTI]

Originally Posted by 502ms

I will be in the market for a dually soon, can you explain the benefits of this specific swap? Does it prevent rubbing when lowered, or just reduce unsprung weight in the rear?

Love the wheel choice, too

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Cant run 4 equal size rears w/o more mods so many guys opt for the 'new' diameter outer wheels (& fronts) & run the OE 16" steels on the inside. The options are C&C rear end (which is 'too narrow' for many guys), narrow the rear end (not as much narrow as the C&C rear, just enough to fit the tires within the fenders), or widen the fenders to clear.

I would like to put bigger diameter wheels on mine but will only run 4 equal size tires. There is no other option for a guy like me w/auto related OCD .

I was planning to run 16" steelies w/hub-caps on mine until I started moving the steel wheels around w/more frequency & realized what a BIG difference in weight there is vs aluminum wheels. I would imagine there's a slight weight penalty for the larger diameter aluminum wheels but even they still prob come in @ less than the steelies.

[cochino12]

talked to American eagle today and the 056 wheel will be out sometime second quarter this year in 20" diameters and will fit two rear aluminum wheels under a lowered truck!! Guess I'll bed waiting a couple months to get tires

[cochino12]

Originally Posted by texastrendz

I ran a 16/19 combo for a while. It is going to eat up some tires. We tried all diffrent combos to resolve this issue with no success. Expect about 8k to 10k out of the tires unloaded. Loaded about 5k to fill safe.

Any pics and other info on the setup you ran?

[vin63]

I would highly not recommend two different diameter wheels on the rear duals for safety concerns. I've seen many instances of tire failure due to extreme tire wear as mentioned earlier from running a 16" dia wheel on the inners with 19s or 20s on the outers. It may be expensive, but it would be best to run the same size (steel) wheel and tire combination on the inners as the outers...especially if you plan to do any towing or hauling.

[68GenIII]

Check out the Duallyscene. Those guys do it all the time.

[vin63]

Having managed a fleet of trucks in a previous life....the tires on duals needed to be within 3/4" (sometimes less) in circumference and 1/4" diameter of each other and the same series to prevent over flexing and loading of the taller tire, and accelerated wear of both. There are a lot of tire and manufacturer variables involved in trying to match different series tires.