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Date Posted |
Forum
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RE: Standard Transmission Fluid
IMO if you really towed heavy like a commercial hauler or a hotshot then another fluid recommended by aftermarket tranny rebuilders may be a better solution (example; Mobile Delvac 50). However RV folks don't pull that heavy so the ATF-4 should work fine pulling a RV.
I have the NV5600 and use Redline MTL. No issues with 215k miles.
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JIMNLIN
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05/20/13 08:56pm |
Tow Vehicles
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RE: Tire pressure
I have 235 80R 16s Goodyear Marathons D rating. Max pressure is rated at 65psi.
Trailer loaded 1500 lbs under gross trailer weight. Should I be runnig max rated psi of 65 lbs?
You got it.
Minimum pressure charts are a poor idea for using on a trailer tire .... for many reasons. The biggest reason IMO is there is a tremendous side stress as the tire on a conventional trailer side scrubs around the corner. Max pressures help hold the tire shape better than a minimum pressure.
Goodyear says this about tire pressure on a trailer;
Goodyear Tire and Rubber .... weighing RVs
Special Considerations
Unless trying to resolve poor ride quality problems with an RV trailer, it is recommended that trailer tires be inflated to the pressure indicated on the sidewall of the tire. Trailer tires experience significant lateral (side-to-side) loads due to vehicle sway from uneven roads or passing vehicles. Using the inflation pressure engraved on the sidewall will provide optimum load carrying capacity and minimize heat build-up.
And this common sense advise;
rvsafety.com
Tire Load and Inflation Ratings
Note: Towable – Travel Trailer/ 5th Wheel owners Due to the severe use conditions experienced by tires when axles are very close together – tire industry experts recommend maximum (sidewall) inflation pressure for towable tires unless this causes a sever over-inflation situation (20psi+), often referred to as the ‘basketball effect’. If this is your situation allow a 10 – 15psi safety margin above the minimum required inflation pressure.
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JIMNLIN
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05/20/13 08:02pm |
Toy Haulers
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RE: Slider hitch in an 8' bed
I have a short bed truck and when in tight situations I like to slide the pin 10" behind the trucks rear axles. Takes less steering input and a bit quicker reaction compared to a hitch that the pin sits 2-4 inches forward of the rear axle.
Our last 27' trailer we sold the guy that bought it was a construction foreman. He had a manual sliding hitch in his long bed chevy Dmax/A for that very reason.
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JIMNLIN
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05/20/13 07:31pm |
Fifth-Wheels
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RE: Goodyear Marathons Made in China?
Time and the elements weaken a trailer tire.
– 3 to 5 years is the average life expectancy of a trailer tire,regardless of mileage.
– It is estimated that in approximately three years, roughly one-third of a tire's strength is gone
– After three years, depending upon storage and conditions of usage, consider replacing trailer tires even if they have tread depth remaining.
– After five years, trailer tires should be replaced in all cases
Per Carlisle Tire and Rubber ST website.
Goodyear as all tire makers change their web add pages on occasion. They also had a 3-5 years for the Marathon but I see that and other info is gone into cyber space from their new web pages adds.
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JIMNLIN
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05/20/13 12:20pm |
Towing
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RE: Pyrometer and diesel trucks
Since adding the Westach dual EGT/boost in '03 I've discovered in 100-110 degree temps in the summer at 75-80 mph on a interstate and long trip with a empty truck it can take 15-20 min of idling before safe shut down temps (300 before turbo) are reached.
I see sustained 1250 degree max temps for long periods from Cummins supported websites and 300 degree pre turbo for shut down as target temps. I've seen egt temps approaching 1300 degree pulling my 12' 10" tall flat front square corner older 5th wheel trailer in western KS/OK fighting a 35-38 mph head wind for several hours trying to maintain 65 mph. I backed off a bit when temps ran above 1275 degrees.
I also use the boost/egt readings to get the best mpgs possible and as trouble shooting tools.
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JIMNLIN
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05/20/13 07:02am |
Truck Campers
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RE: Opinions Wanted
The two tires are apples vs oranges.
The R250 is a all steel carcass commercial grade LT tire that has a excellent reputation when used on 6k axles.
The Maxxis ST may be popular with some folks but a quick search come up with about a dozen Maxxis ST tire complaints just on this website. A google has even more complaints from a broad range of trailer types (not just RVs).
Cost ?? Sure the XPS and R250 are expensive as they are a commercial grade tire that weighs close to 56-58 lbs vs 35-37 lb for a ST tire.
Other excellent LT tire for 6k axles are of course the BFG Commercial HT as mentioned and the Firestone Transforce HT/Goodyear Wrangler HT/Uniroyal Laredo HD-H/cooper SRM II. These tires are a fabric carcass and a proven tire when used in a trailer position and 6k axles and smaller.
The LT tire is a bit taller/wider so do your measuring for proper clearance or let the tire dealer do it for you.
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JIMNLIN
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05/20/13 06:18am |
Fifth-Wheels
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RE: Traveling in Tornado prone areas
Just be aware of weather forecasts for severe weather with possible tornado such as going on right now in the southern plains and will be spreading farther eastward each day. Be aware of the difference in a tornado watch and a warning.
Pay attention to a low to the ground big greenish black cloud especially with lots of ground to cloud lightning across a broad front. Don't charge ahead and drive into it before first finding a local radio station that gives details as to the severity of that particular storm.
"Be aware of your location on a map in relation to each storm when possible".
Not only can a funnel form but 80 mph wind gusts and large hail IMO are more worrisome.
Same if your in a RV park. Be aware of its exact location on a map and watch a local TV or a local radio station that is following the storms path.
This time of the year one of the first things I do is find out if there is a campground shelter which is usually a concrete block rest room. Don't stay in the trailer if high winds are coming. Just follow common sense precautions.
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JIMNLIN
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05/19/13 08:15am |
General RVing Issues
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RE: How much are you willing to ?
I wouldn't add a thing to the truck till its hooked up a you make a short trip to see how it carries the load. No bigger than the trailer is I doubt the truck will need any help with carrying weight.
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JIMNLIN
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05/18/13 08:01pm |
Fifth-Wheels
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RE: Sorry for another tire post, but this has different twist.
Light truck tires that are intended to be used in dual applications have two "Max Load" ratings branded on the tire's sidewall. This is because the load capacity rating of a tire serving duty in a "single" application is greater than the exact same tire being used in a "dual" application. For example, a LT235/85R16 Load Range E tire is rated to carry 3,042 pounds when inflated to 80 psi and used in a single application, but only 2,778 pounds when used in a dual tire application at the same inflation pressure.
Another example of dual vs single ratings and reasons from the Tire Rack Tech pages http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=71
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JIMNLIN
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05/18/13 08:19am |
Fifth-Wheels
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RE: How much are you willing to ?
What is is max load you would pull and still be very very comfortable towing.
I and my '03 2500 Dodge/Cummins truck are very comfortable pulling its 13350 lb tow rating. My truck and myself are comfortable carrying its full max 6000 RAWR. My trucks front axle doesn't carry any weight from my GN ball or 5th wheel trailers pin loads so its not a player in the carrying game , just stopping
I arrive at my pin weights by weighing front and rear axles seperatly and then subtracting my trucks unladin rear axle weight of 2860 lbs from the trucks 6000 RAWR = 3140 lb of payload.
So, what should my maxx weights be and be good for me as well as on my truck.
You can either subtract your trucks scaled gross weight from its GVWR and use that as a max payload on the trucks rear axles/tires.
Or use your trucks axle/tire RAWR to figure how much loads they can carry.
Ford says your '11 F250 6.7 diesel can tow up to a 15700-16100 lb trailer.
Now what your comfortable with I have no idea as to your capabilities and comfort zone. I've made a living with these size truck for many years so my comfort zone tends to use max capacities of the truck that I paid for. As you see others aren't comfortable with carrying up to max loads. Its your call.
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JIMNLIN
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05/18/13 08:02am |
Fifth-Wheels
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RE: F150 payload quetion
The Screw with 6.5 bed has the thicker frame material as the HD Scab 8' bed. Also the HD has the 4800 RAWR, so if the part #'s are the same then the Screw Maxtow with 6.5 bed should have the 4800 RAWR. Doubt it does as the axles would be different to accommodate the 7 lug wheels. IIRC there are different bushings and what not as well on the HD.
All good points. looking at Fords fleet builders specs shows:
... The HD package has the 4800 RAWR 9.75" rear axle.
... The MAX package has the 4050 RAWR 8.8" rear axle.
... 1.33" dia axles with 34 spline for the 9.75" axle in the HD.
... 1.29" dia axles with 31 splines in the 8.8" axle in the MAX.
The 7 lug HD wheels are 2400 lbs rated vs 2025-2100 lbs for the others.
The 8200 GVCWR HD package is set up to carry more weight but tow ratings are similar to the MAX tow.
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JIMNLIN
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05/16/13 12:54pm |
Tow Vehicles
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RE: Fifth Wheel Capabilities Truck
I do not know what a 6.0 is, but a 454 cubic inch engine is a big block.
EDIT
I had to convert 6.0 into cubic inches to be able to understand how big a 6.0 is, a 366 cubic inch definitely not a big block
Keep in mind the OP is about a '13 model truck.
The problem is Ram hasn't had a big block gas engine since dropping the 488 ci (8.0) V-10 in '03.
Or GM dropped the 498 ci (8.1) in the late '00s.
Or Ford dropped their V10 in the late '00s.
These big blocks had the hp and more importantly the big torque numbers (450-500+) to pull heavy loads more easily without all the typical high rpm as our small block gassers require.
At one time we had a choice to pull heavy (similar tow ratings) with a diesel or the big block gas engine.
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JIMNLIN
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05/16/13 07:21am |
Towing
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RE: Fifth Wheel Capabilities Truck
OK I give, give me an example of a 2012 LARGE block.
:h :@
Your idea so You tell us.
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JIMNLIN
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05/14/13 06:09pm |
Towing
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RE: Fifth Wheel Capabilities Truck
Looking at GM online fleet ordering guide CLICKY LINK shows your 2500 Chevy WT has 3500-3600 lbs payload. The truck will have no problems carrying that trailers pin weight.
Now the deal killer is GM say the '12 2500 WT 6.0 4x4 short bed 3.73 has a 9800 lb tow rating (4.10 gears = 14300 lb)
IMO any smallblock pulling over 12k will not make for a comfortable towing experience. The truck will struggle at those loads. I would stick with a 10k wet weight trailer.
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JIMNLIN
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05/14/13 12:19pm |
Towing
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RE: over on RAWR occassionally
This is the result of the GVWR being tighter to the total GAWR of the truck. Now days that is running between 90% to 95% of the total GAWR, so it is possible to exceed the GRAWR without exceeding the GVWR
Good point.
This pops up especially on some F150 models with the high GVWRs.
Now the '13 3500 Dodge SRW has a whoppin' 12400 GVWR and 7000 RAWR. I see rear axle over load written all over this truck when RV folks use GVWR to figure a payload.
The '12 F350 SRW has a 6290 RAWR and 6730 RAWR and 7000 RAWR packages depending on truck selection. The OP has the 3750 lb rated tires so I assume his truck has the 7000 RAWR package.
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JIMNLIN
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05/13/13 06:57pm |
Tow Vehicles
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RE: Which Spring Enhancement for Ram 3500 hd DRW crewcab longbed
Your 3500 DRW Dodge has those big 9350 RAWR.
Is the trucks rear sagging ?
Is the truck dedicated for the truck camper or does it do other hauling/towing duties ??
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JIMNLIN
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05/13/13 06:07pm |
Truck Campers
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RE: Another Tire Question
jimnlin is misinformed about steel wheels not being able to take 80 psi.
side bearing loads and the strength of the wheel being able to support a load are exponentially greater than tire pressure within a wheel .
further , when these rv or light truck wheels fail they do not do so catastophically .
rather they develop a crack at a "shoulder" and they fail because they can no longer maintain a constant pressure.
I never said a steel wheel wasn't rated at 80 psi. See my above post on different wheel pressure ratings.
I base my opinion on facts from the wheel makers and my personal and other operators experience of busted out or cracked steel wheel centers and split bead seat flanges from using the wrong capacity/pressure rated wheels and from and wheel dealers recommendations.
All steel wheels are stamped from different material thicknesses so one size don't fit all.
when these rv or light truck wheels fail they do not do so catastophically .
Busted/cracked wheel centers and busted valleys are not uncommon on LDTs out here in the real world. Now granted the vast majority of RV folks/persons don't carry max axle/wheel or tire loads so its possible that some could come to the erroneous conclusion that wheels don't fail or especially don't fail catastrophically. Wheels can and have failed from using the wrong capacity(s).
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JIMNLIN
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05/13/13 06:17am |
Travel Trailers
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RE: What is FMVSS 110?
§ 571.110 Tire selection and rims and motor home/recreation vehicle trailer load carrying capacity information for motor vehicles with a GVWR of 4,536 kilograms (10,000 pounds) or less.
S1. Purpose and scope. This standard specifies requirements for tire selection to prevent tire overloading and for motor home/recreation vehicle trailer load carrying capacity information.
S2. Application. This standard applies to motor vehicles with a gross vehicle weight rating (GVWR or 4,536 kilograms (10,000 pounds) or less, except for motorcycles, and to non-pneumatic spare tire assemblies for those vehicles.
S3. Definitions.
Snipped for length as its pages and pages long. As it says its a tire and rim selection procedure for varoius vehicles under 10k lbs.
clicky link
Use the clicky and see all the 571 FMVSS regulations. Scroll down to 110 tire and rim selections for under 10k lbs vehicles. Above 10k vehicle tire and rim selections is covered under 571.120.
IMO Toyota legal department could best give the reasons the add reads as it does or why they phrased it like that.
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JIMNLIN
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05/12/13 07:15pm |
Tow Vehicles
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RE: Another Tire Question
Chuck I had not thought about the rim width. You are right they are only 5". Looks like that could be a limiting factor. The rims do not have a visible weight or psi rating anywhere on them. If it is there it must be stamped on the inside which really does not help as that means I won't know until they take the tire off the rim. I don't think there should be a problem going from C to D or which is going from 50 to 65 psi. I can see where going to 80 psi with and E rating could be an issue.
Wheels like tires are pressure and capacity rated. Anyone/persons that says all 15" steel wheels are pressure rated to 80 psi has no business offering advise or tell others to ignore the wheel manufacturers pressure ratings. If your steel wheels have no pressure ratings then its time to contact the wheel manufacture. You sure don't want a split bead seat on the wheel. Just like the over pressured tire it can have a sudden loss of pressure. Even tire manufacturers warn to use the proper pressure and capacity wheel for the tire.
Dexstar has 15" steel wheels rated at 50-65-75 and 80 psi.
Chuck makes a good point on using the proper width wheel for a particular tire. Same goes for pressure and capacity as one size don't fit all. Lets be safe out here.
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JIMNLIN
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05/12/13 06:13pm |
Travel Trailers
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RE: Slider Hitch danger?
Generally ignorant comments like that are about another hitch brand. I would use a different RV dealer. I sure wouldn't trust any dealer after that type of comment.
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JIMNLIN
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05/12/13 07:31am |
Fifth-Wheels
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