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Old 07-22-2018, 07:16 AM   #1
GReeves
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Tire Weight Rating/ CC Silverback

Hello all, first post here. I am making myself crosseyed trying to figure out if I will be safe towing with the wheel/tire setup on my truck. Currently, I have a 2016 Duramax 2500HD CCSB with the 10,000# GVWR option, the truck has been leveled with 22x10 American Force forged aluminum wheels with a 3500-lb weight rating per wheel. Currently have 33x12.50 Toyo OpenCountry MT which I know are only rated for 2270-lbs per tire, severely reducing my cargo capacity. I am looking at putting on 285/55r22 Nitto RidgeGrappler which are rated for 3525-lbs per tire....this effectively means I could put 7K on the rear axle, limited by the wheels. Truck is around 3500-lbs on the rear axle with the hitch in the bed, fuel, and myself. Does anyone have a real world hitch weight for a 2012 Cedar Creek Silverback 33REA by chance??? I know 20-25% of the GVW is the norm for a fifth wheel but I have a hard time believing that this camper will have a hitch weight around 3500-lbs (25% of 13,850-lbs). Dry hitch weight is listed at 1850-lbs. Currently, my dad tows this camper with his 2011 F250 CCSB with 20x9 XD Badlands (3200-lb weight rating) with 35x12.50r20 Toyo OpenCountry AT-2ís (3200-lb weight rating) and I dont see an F250 and a 2500HD differing in weight by too much but maybe I am wrong. He has offered to sell me his camper for payoff and I really donít want to pass this deal up since it would be a steal for me.
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Old 07-22-2018, 10:37 AM   #2
wingnut60
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I would lean more toward 20% of the GVWR. 13850 x .2 = 2770, not 3500lbs. Why not get him/you to weigh the trailer and get the pin weight?
You are headed in the right direction to get higher-capacity tires, because that is usually the actual rear axle capacity max on a 3/4ton.
A real steal from a trusted source should not be passed up, maybe mod the truck back to regular tires?
Also, there ought to be a CC/Silverback owner forum somewhere on the internet--google for it.
Welcome to the forum. Let us know how this plays out.
Joe
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Old 07-22-2018, 10:50 AM   #3
GReeves
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Thanks Joe. Going to re-weigh my truck tomorrow just to make sure of the weight. I will try to have him drag the trailer over to the scale one day and weigh with and without the trailer to see what the exact pin weight is. My RGAWR is 6200 on my truck, so going with the 285 tires, my axle would actually be the weak link at that point. Do airbags actually help the rear axle weight rating or are the just more for leveling the load?
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Old 07-22-2018, 02:49 PM   #4
wingnut60
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Nothing you can do will increase the RAWR from the factory number. This is determined by the engrs at GM. Air bags will help with any rear end squat caused by the pin weight of the fiver.
Most all axle assemblies themselves will have a higher weight rating by themselves, it is the rest of the truck that is used to determine all the numbers. I have always considered the carrying capacity of the tires as the ultimate limit for weight, and then don't like to not have some overcapacity where the rear tires are concerned.
If you take my earlier estimate of max pin weight of 2770, and the RAWR of 6200, that gives you 3430lbs to work with. That 3430 would include the weight of the hitch and any other items that are in the bed.
Again, I would not worry too much about the 6200lb axle, but would NEVER go over the carrying capacity of the 2 rear tires.
Really need to get some actual weights as you would be loaded to go camping--only then can you be sure where you are on limits.
Joe
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Old 07-22-2018, 02:59 PM   #5
GReeves
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With my current wheel and the 285’s, the wheels could hold 7K and the tires could hold 7,050 pounds. If the axle is not the real concern then I am feeling a little better about this. I ran a VIN check, and it says minimum RAWR is 6200 with a maximum RAWR of 6750??...either way, the scale will let me know but I think I will be ok after the change in tire, thanks again
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Old 07-22-2018, 03:32 PM   #6
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What does the door sticker say?
I am not the weight police, and there must literally be hundreds of 2500s towing much larger trailers than the one you are thinking to get.
On my current trip, been in many campgrounds with triple axle THs that have 17-19000 GVWRs and pulled by 2500s/250s and a lot of them were lifted with big tires. Safe? I don't know, but lots of people doing just that.
I think you are going to be ok, just have new and the best tire rating you can get.
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Old 07-22-2018, 03:59 PM   #7
GReeves
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My door sticker says 6200 so thats what Iím going to go by. Thanks for your opinion, Iíve posted on several different sites and Iíve mainly gotten crappy responses telling me I ďshouldnít tow anything at all with 22ís because they look stupid and serve no purposeĒ....well I beg to differ, I think my truck can look good and still perform as good as factory with the right tire. My truck was leveled with wheels/tires by the dealer, I just got stuck with crappy tires with a lesser weight rating. And I agree, I see some giant 5íers going down the road towed by 3/4 ton trucks all the time
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Old 07-23-2018, 08:52 AM   #8
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I can't help but believe that the OP deserved a better answer than "Safe? I don't know, but lots of people doing just that." I also believe that the OP is going to tow this RV with the tires of his choice regardless of what is recommended. He is simply searching for a forum that will stamp the okay to his plan.
I'm not sure if I can be referred to as "weight police," but I do believe that RV'ers should know their truck's legal capabilities and the ACTUAL weight of their cargos. Once the figures are know then an individual can act accordingly.
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Old 07-23-2018, 09:34 AM   #9
GReeves
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Quote:
Originally Posted by Notanlines View Post
I can't help but believe that the OP deserved a better answer than "Safe? I don't know, but lots of people doing just that." I also believe that the OP is going to tow this RV with the tires of his choice regardless of what is recommended. He is simply searching for a forum that will stamp the okay to his plan.
I'm not sure if I can be referred to as "weight police," but I do believe that RV'ers should know their truck's legal capabilities and the ACTUAL weight of their cargos. Once the figures are know then an individual can act accordingly.
Nope, thats where you are wrong. If I canít safely tow this camper with my truck, then I will simply tell my dad to sell it outright. Iím not going to risk breaking something on my truck just because I can get a smoking deal on the camper. I canít afford to go up to a dually as Iíve only had my 3/4 ton for about 8 months. I had no intention of buying a 5th wheel, I just love 3/4 ton trucks. I went back to a half ton and hated it so Iím back in a 3/4 ton. I daily drive this truck and pull my bass boat with it. If I go up to the 285/55ís those tires will put me OVER the RAWR of 6200.....so regardless of what anyone says, the 22ís on my truck with the 285/55ís are better than factory. Tires that came factory were rated for 3200-lbs a piece
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Old 07-23-2018, 11:25 AM   #10
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I'm glad to see you post that last answer. I also understand owners not wanting to trade in relatively new trucks. Tire brands and pin weights on under-rated trucks are probably the two most hotly debated/discussed subjects on the forums. So far we all have a great conversation going.
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