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  #11  
Unread 05-31-2016, 07:17 PM
Wapitihunter Wapitihunter is offline
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Default Contractor's Truck

Be careful if you ever use your spare on the front pass - weights won't clear the drag bar and will shear off (18" spare I used at the time).

Small price to pay on such an awesome setup and fit.
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  #12  
Unread 05-31-2016, 07:31 PM
Wapitihunter Wapitihunter is offline
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Ps. Awesome thread. You are the only one I've seen with more dents and scratches than I.
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2014 CCSB Tradesman 2500 -- G56 -- AEV dualsport -- AEV Katla -- 37x12.5r17 Toyo R/T -- 315/70r17 Nokian Hakkapeliitta -- AEV bumper -- VisionX 6.7" light cannon -- Warn 16.5TI -- Mopar flares -- 8.4" Uconnect swap w/ customtronix jailbreak (front/rear/trailer cam) -- 3.73 gears w/ ARB front and rear -- Switch-Pros 8100
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  #13  
Unread 05-31-2016, 07:32 PM
Wapitihunter Wapitihunter is offline
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Quote:
Originally Posted by RF2200 View Post
Put your truck on a scale and measure the weight on the front and rear axle. Then reference those weights with the load and inflation table for the 37X12.50R17 BFG KO2. Find the recommended pressure for that axle load. Contact BFG for the table. Your 44/46 estimate is incorrect.



Go here.



https://www.toyotires.com/tires-101/...flation-tables



Then read this.



https://toyotires2-1524598101.netdna...s_20151020.pdf



I cannot say what your pressures should be exactly because I do not know your axle weights but there is no reason to ever have your tires set to more than 40PSI front and 50PSI rear (cold inflation pressure) for max GAWR of 6,000LB and 7,000LB, respectively.



At your truck's base weight of 7,952LB with Front Axle Weight = 4,970LB and Rear Axle Weight = 2,982LB the recommended inflation pressures are 31PSI front and 18PSI rear (cold inflation pressure).



"Replacement Tire

4. Use the appropriate load inflation table for the replacement tire size(s).

5. Find the inflation pressure to which the corresponding load is equal to or greater than the OE tire.

6. Inflate tires to the appropriate inflation pressure.

7. If the replacement tire requires a different inflation pressure than OE, the installer should inform the owner of the new required inflation pressure and should also place a sticker or decal over the vehicle tire placard showing the new tire size and recommended inflation pressure for future reference."



Also,



"When a P-metric or metric tire is installed on a light truck (SUV, pickup, minivan), the load capacity of the tire is reduced by a factor of 1.101 as prescribed by the Federal Motor Vehicle Safety Standards (FMVSS). For example, 305/50R20 has a maximum load capacity of 3086 lbs. If this tire is fitted to a light truck, then the actual allowable load capacity for the tire is 2805 lbs. (3086 lbs. divided by 1.1). If you replace the original tires with the exact same type (P-metric, hard metric, LT-metric, or flotation), size designations, and ply as the tires that were originally installed, just follow the vehicle

X2. I run 35 front. 30 rear.
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2014 CCSB Tradesman 2500 -- G56 -- AEV dualsport -- AEV Katla -- 37x12.5r17 Toyo R/T -- 315/70r17 Nokian Hakkapeliitta -- AEV bumper -- VisionX 6.7" light cannon -- Warn 16.5TI -- Mopar flares -- 8.4" Uconnect swap w/ customtronix jailbreak (front/rear/trailer cam) -- 3.73 gears w/ ARB front and rear -- Switch-Pros 8100
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  #14  
Unread 05-31-2016, 08:09 PM
.com .com is offline
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Haha. I think it's just the fact that my truck is black. If it were white it would look immaculate. Those aren't actually scratches on the tailgate. If you look closely they are reflections and dust.
I'm still confused about tire pressures. I called aev this morning and they told me to run the tires at 60psi front and rear! I was shocked. Everything written above makes sense, I'll definitely keep experimenting with lower pressures.
I'll do the chalk method to at least figure out the proper psi for even tire wear. I guess I need to install that air compressor, one step closer towards lockers!
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  #15  
Unread 05-31-2016, 09:22 PM
Wapitihunter Wapitihunter is offline
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Quote:
Originally Posted by .com View Post
Haha. I think it's just the fact that my truck is black. If it were white it would look immaculate. Those aren't actually scratches on the tailgate. If you look closely they are reflections and dust.
I'm still confused about tire pressures. I called aev this morning and they told me to run the tires at 60psi front and rear! I was shocked. Everything written above makes sense, I'll definitely keep experimenting with lower pressures.
I'll do the chalk method to at least figure out the proper psi for even tire wear. I guess I need to install that air compressor, one step closer towards lockers!
I chalked mine too. Still need less air in rear but pain when towing every week. Also, I would tell you 60 if I was aev also and had people willing to sue if something happened. Hell, some tires mfgs won't give load tables anymore...
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2014 CCSB Tradesman 2500 -- G56 -- AEV dualsport -- AEV Katla -- 37x12.5r17 Toyo R/T -- 315/70r17 Nokian Hakkapeliitta -- AEV bumper -- VisionX 6.7" light cannon -- Warn 16.5TI -- Mopar flares -- 8.4" Uconnect swap w/ customtronix jailbreak (front/rear/trailer cam) -- 3.73 gears w/ ARB front and rear -- Switch-Pros 8100

Last edited by Wapitihunter; 05-31-2016 at 09:25 PM.
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  #16  
Unread 05-31-2016, 11:38 PM
SonOfNeptune SonOfNeptune is offline
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Quote:
Originally Posted by .com View Post
Haha. I think it's just the fact that my truck is black. If it were white it would look immaculate. Those aren't actually scratches on the tailgate. If you look closely they are reflections and dust.
I'm still confused about tire pressures. I called aev this morning and they told me to run the tires at 60psi front and rear! I was shocked. Everything written above makes sense, I'll definitely keep experimenting with lower pressures.
I'll do the chalk method to at least figure out the proper psi for even tire wear. I guess I need to install that air compressor, one step closer towards lockers!
Now your talking! Im right behind you
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  #17  
Unread 06-01-2016, 08:57 AM
RF2200 RF2200 is offline
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Quote:
Originally Posted by .com View Post
I'm still confused about tire pressures. I called aev this morning and they told me to run the tires at 60psi front and rear! I was shocked. Everything written above makes sense, I'll definitely keep experimenting with lower pressures.
I'll do the chalk method to at least figure out the proper psi for even tire wear. I guess I need to install that air compressor, one step closer towards lockers!
Absolutely do not run your 37X12.50R17 BFG KO2 tires at 60PSI. Max PSI for those tires is 50. Do not exceed 50PSI (cold inflation pressure). I have a hard time believing that AEV would say that.

I posted a while back about why TPMS has been required in every vehicle since 2007 and that is about the same time that manufacturer tire pressure recommendations became a big deal. And the manufacturer tire pressure recommendations are going to be for GVW operation. So, if these tires came on your truck from the factory your door placard would say 40PSI front 50PSI rear with up to a 1.101 adjustment factor applied thereafter.

The more payload your vehicle has the more you are going to need to vary your tire pressures. Your Ram can weigh between 7,952LB and 12,300LB which is a huge difference. It can vary from 2,982LB to 7,000LB on the rear axle which is a huge difference. Anyone who tells you to run the same tire pressure on an axle with 2,982LB and 7,000LB doesn't know much.

I said that you are going to be in the range of 31-40PSI in the front tires and 18-50PSI in the rear tires. Obviously, don't be an idiot and hitch up to a trailer and double your rear axle weight without adjusting your tire pressures accordingly.
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Last edited by RF2200; 06-01-2016 at 09:19 AM.
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  #18  
Unread 06-01-2016, 09:15 AM
RF2200 RF2200 is offline
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Also, to second Dave, I have these exact tires on my truck with no problems whatsoever.
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  #19  
Unread 06-01-2016, 09:25 AM
RF2200 RF2200 is offline
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Quote:
Originally Posted by Wapitihunter View Post
I chalked mine too. Still need less air in rear but pain when towing every week. Also, I would tell you 60 if I was aev also and had people willing to sue if something happened. Hell, some tires mfgs won't give load tables anymore...
On the contrary, AEV will open themselves to liability if they tell people to pressurize their tires beyond the manufacturer's maximum inflation pressure which is 50PSI, in this case.
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Unimog U1200
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  #20  
Unread 06-01-2016, 04:16 PM
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haha, yeah that will do it!

dh
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