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19.5 inch wheels


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#1 OFFLINE   Jillneddie

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Posted 29 August 2017 - 08:57 AM

Considering going from Af992 to host Cascade. Doing research on what I have to do to carry the Cascade on a srw GMC 3500. Carries the af fine with stable loads and Heavy duty Timbrens. If I have to change from 18 inch wheels to 19.5 how much will that effect mileage and speedometer? Do g rated tires come in 18 inch or is that just 19.5. Hoping that current set up will work but may not. The Cascade is only minimally heavier than the 992.

#2 OFFLINE   fredandjoann

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Posted 29 August 2017 - 10:39 AM

Earlier this year I was working on replacing wheels on my then F350 SRW truck from 18" to 19.5".  The tires for the 19.5" wheels have shorter side wall height so the overall diameter was going to be the same, therefore, no change in speedometer.  I didn't finish that change as I instead traded trucks for an F450 that already had 19.5" wheels.



#3 ONLINE   Bedlam

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Posted 29 August 2017 - 11:39 AM

275/70R18 tires were the same height as my 245/70R19.5 replacements (about 33" tall). I suggest going with LRH or PR16 tires even if you don't that much capacity - You can run less air pressure in them than a LRG/PR14 tire to get the same weight carrying.


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2015 Ram 5500 HD 4wd Tradesman 60" CA, Crew cab with 173.4" wheelbase, 19,000 lb GVWR with 26,000 lb GCWR, Cummins I6 6.7 liter diesel with chassis cab tune 325 hp @ 2800 rpm and 750 ft-lb @ 1700 rpm, Aisin AS69RC 6-speed automatic, New Process NV271 manual transfer case, 14.5k lb Dana S14-111L limited slip and 7250 lb Magna Steyr 275mm with 4.44 ratios, Palfinger Badger low sill flat bed, Dual DeeZee 36x18x18 under bed boxes, Quad DeeZee 48x18x18 above bed boxes, Curt Double Lock 30K lb gooseneck, Dual 3/4" horse stall mats, SuperHitch Magnum 30K dual receiver with 42" SuperTruss, Upper StableLoads, Short range FastGun turnbuckles with locks

 

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#4 OFFLINE   Jillneddie

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Posted 29 August 2017 - 07:20 PM

Tks for info. Bedlam what the difference in the tires you mention. I'm obviously a novice on these types of tires.

#5 ONLINE   Bedlam

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Posted 30 August 2017 - 04:35 AM

These tires and rims are heavier allowing for their greater capacity. Expect each mounted wheel to weigh about 125 lbs, upgrading to heavier dampening shocks like the Bistien or Rancho will help keep that additional unsuspended weight in control. You have a choice of 4500 lb rated Vision, 5000 lb rated Rickson and 6000 lb rated American Force 19.5" rims. There are plenty of 245/70R19.5 tires available, so you will need to choose your favorite brand or tread pattern.

The tires can only be aired down to about 70 psi due to a different style of bead on the rim and tire. This makes them a poor choice in soft sand or deep snow where you need flotation on top of the material rather than digging down. However, they do well in other traction applications. Since this tire has less flex than an LT tire, the unloaded ride will be a little harsher, but not any worse than low profile sport car tires. When loaded, these tires will show their merits - They will flex less under load giving you a more confident ride and handling.

2012 Interstate Car Carrier ICC10220TA3, 20'x8.5', 8" I-beam frame, dual 5200 lb 4" drop torsion axles, Diamond plate, Towmax 225/75R15 LRE tires on galvanized rims, Harbor Freight 10k lb equalizing hitch, Camping World vent cover, LED lighting, 3' RV door, front and rear door interior light switches, interior plywood walls and floor, 70' of Harbor Freight E-track rail with recessed corner 5k lb D-rings, Dual 42 gal fresh water tanks with Harbor Freight transfer pump, portable dual  Harbor Freight 45w solar arrays, 100 lbs LPG in four bottles, PowerArmor Max Solar 5-battery box, Deka 24HR3000 sealed batteries

 

2015 Ram 5500 HD 4wd Tradesman 60" CA, Crew cab with 173.4" wheelbase, 19,000 lb GVWR with 26,000 lb GCWR, Cummins I6 6.7 liter diesel with chassis cab tune 325 hp @ 2800 rpm and 750 ft-lb @ 1700 rpm, Aisin AS69RC 6-speed automatic, New Process NV271 manual transfer case, 14.5k lb Dana S14-111L limited slip and 7250 lb Magna Steyr 275mm with 4.44 ratios, Palfinger Badger low sill flat bed, Dual DeeZee 36x18x18 under bed boxes, Quad DeeZee 48x18x18 above bed boxes, Curt Double Lock 30K lb gooseneck, Dual 3/4" horse stall mats, SuperHitch Magnum 30K dual receiver with 42" SuperTruss, Upper StableLoads, Short range FastGun turnbuckles with locks

 

2018 Host Mammoth 11.5, Polarized dual pane windows, Powered and lit awning, Swing out Rieco-Titan jacks,  Fantastic Fan in cab over, Aero-Flo vent covers, 3x160w Zamp Solar with 30A controller, External 24" TV with DVD, Cargo slide tray, dual 6-volt batteries, 2.5KW LPG Onan, External LPG connection, 2-way water heater, Therford 3-burner cook top, Convection/Microwave, 8 cu ft 2-way Norcold Fridge, Loveseat with foot rest, U-shaped dinette, 1000W PSW Zamp inverter, King Jack amplified OTA antenna, 40" Samsung UN40J5200 smart TV in living room, Electric fireplace with heater, Accordion bedroom door, Full wall passenger-side cab over wardrobe, 32" Samsung UN32J5205 smart TV in Bedroom


#6 OFFLINE   dvanceman

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Posted 31 August 2017 - 03:49 AM

I found the spedo to be 5mph off you can use a gps unit. I found this to be true using my garmin. The ride is deintely rough without camper on truck I would rather be on the safe side.






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