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Old 08-26-2014, 11:55 PM   #1
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Issue while towing

So, I have a 2002 F250, 7.3, 4x4, super duty, crew cab, SRW short bed towing a 2012 Extreme Warrior FS3000 toy hauler. Towing was fine first year I had it. Then, rear tires were pretty bald, front tires at maybe half wear. So, I replaced the rear tires. All of a sudden towing the trailer was really "squirrely" for lack of a better term. After a couple of trips swapped tires so old ones were in back. Smoothed towing out right off the bat. Well, lost a weight off one old tire, had to ride 100 miles with tire out of balance, ruined tire. Got two more tires (other new tires have about 1000 miles on them). Towing is squirrely again. Tires are Bridgestone Dueler Revo 2 P285-75R-16. Does ANYONE have any knowledge or experience anything of this nature?I dropped the tire pressure to 45 lbs which helped, but it still was pretty bad. HELP & THANKS!
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Old 08-27-2014, 12:01 AM   #2
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45 pounds ? Loaded ? What is the rated pressure on those tires and do you know your rear axle weight loaded ready for travel?
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Old 08-27-2014, 12:06 AM   #3
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Sound like your axle loading is way off. Your 4X4 tall? I might weigh the axles separately to check.
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Old 08-27-2014, 04:54 AM   #4
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Whoa... u put p rated tires on a 3/4 ton diesel to pull a 5er! P rated tires are barely enough for an empty 1/2 ton! You need e rated LT tires... dangerous situation on passenger tires brother.
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Old 08-27-2014, 08:26 AM   #5
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Whoa... u put p rated tires on a 3/4 ton diesel to pull a 5er! P rated tires are barely enough for an empty 1/2 ton! You need e rated LT tires... dangerous situation on passenger tires brother.


I had a flat tire on my Ram that could not be fixed screw in the side wall. Tire was replaced by Tire discount under warranty. When I was at home the next day washing the truck and cleaning the tires I saw where Tire Discount installed a P265/70R17/E tire on my truck instead of the LT265/70R17/E that I normally run. I took the truck back and had them install the correct tire at their cost; which they did. You should never run "P" rated tires on a 3/4 ton and above truck they should not even be offered for use on a 1/2 ton truck.


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Old 08-27-2014, 09:18 AM   #6
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So my issue is probably the "P" rated tire? Wish I had known that BEFORE I bought 2 more yesterday! DOH! This forum has helped soooo much! Some day I won't be such a dummy!
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Old 08-27-2014, 09:46 AM   #7
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Ok my bad. I wondered why a tire shop would sell me "P" rated tires when they should be "LT" rated. Turns out they are LT285/75R16 after all. Max PSI is 80 pounds. So, why so much sway & lack of control with 80psi but at 45psi it's much more stable & better control?
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Old 08-27-2014, 10:07 AM   #8
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Originally Posted by bighamstoy View Post
So, I have a 2002 F250, 7.3, 4x4, super duty, crew cab, SRW short bed towing a 2012 Extreme Warrior FS3000 toy hauler.
...
...
Turns out they are LT285/75R16 after all. Max PSI is 80 pounds. So, why so much sway & lack of control with 80psi but at 45psi it's much more stable & better control?
You have oversize tires. Stock size was LT265/75R16E. Plus your trailer is a TT (bumper pull) that requires an excellent weight-distributing hitch with excellent sway control.

The oversize tires are going to be squishier than the stock size tires. But I suspect your biggest problem is your WD hitch is either inadequate or not properly adjusted for your load. Give us the make, model and specs for your WD hitch and we can give more complete analysis.

When all hooked up and ready for the road, with the spring bars adjusted, is the floor of the trailer level, front to rear?

You have weighed the wet and loaded rig on a CAT scale, right? Give us the weights on the axles of the rig - front, rear, and trailer axles.
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Old 08-27-2014, 10:12 AM   #9
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Could come down to tread pattern , rubber compound or age of the tire.( too new)
Now that the first set, you purchased, have run a while ( currently on front ?) The compound may have hardened up and you might see an improvement by rotating them to the rear.
Had a similar issue with a set of Michelins , didn't feel right for the first 5,000 miles, couple of dozen heat cycles.

EDIT: I see SmokeyWren; posted while I was typing , with very good advice and info. Boy I type slow.
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Old 08-27-2014, 10:41 AM   #10
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Issue while towing

Ok my bad. I wondered why a tire shop would sell me "P" rated tires when they should be "LT" rated. Turns out they are LT285/75R16 after all. Max PSI is 80 pounds. So, why so much sway & lack of control with 80psi but at 45psi it's much more stable & better control? The trailer weights are as follows: Hitch weight 950, dry weight 7500, gross weight 12000. All my tanks were mostly empty, fuel about 20 gallons, a 900 pound Harley placed directly over axels
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Old 08-27-2014, 10:56 AM   #11
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Issue while towing

Sorry for double post. I just bought the Reese Strait-Line Weight Distribution w Sway Control - Trunnion Bar - 15,000 lbs GTW, 1,500 lbs TW. Followed the instructions to a "T". I researched & found it was supposed to work better than the friction style sway control. Also, haven't actually weighed the rig, just going by factory numbers. . Also, front tires have 1,500 miles at the most. Guess when this trip is over I will take a long trip without the trailer to put some miles on the tires... :-)
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Old 08-27-2014, 04:39 PM   #12
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I just bought the Reese Strait-Line Weight Distribution w Sway Control - Trunnion Bar - 15,000 lbs GTW, 1,500 lbs TW.
Excellent WD hitch, and well matched to your trailer if your hitch weight is between 1200 and 1500 pounds. I have that same hitch, except mine has lighter-weight spring bars because my trailer is lighter than yours,

Quote:
Also, haven't actually weighed the rig, just going by factory numbers.
Factory numbers are often misleading. You need actual scale weights, not only of the axles but also of the tongue weight.

Wet and loaded tongue weight should be around 12% to 13% of gross loaded trailer weight for best handling. Your FS3000 has 12.67% tongue weight when unloaded.
FS3000 Weights
Overall Weight 7,500 (IOW, dry weight)
Hitch Weight 950 (IOW, dry hitch weight) = 12.67% of dry trailer weight
GVWR 12,000
Carrying Capacity 4,500

Because all the weight of the toys is behind the trailer axles, then your tongue weight may be too little when the toys are loaded. If it is, then you need to move some weight from the rear of the trailer to the front.

Fresh Water 110 gal.

If the fresh water tank is in front of the axles, then you can gain some hitch weight percent by hauling water.

When properly adjusted, your WD hitch should distribute about 20 to 25 percent of the gross tongue weight back to the trailer axles, another 20 to 25 percent to the front axle of the tow vehicle, and leave about 50 to 60 percent of the tongue weight on the rear axle of the tow vehicle.

It requires several trips across the CAT scale to get the hitch properly adjusted the first time, plus you either need a tongue weight scale or more trips across the CAT scale to determine wet and loaded tongue weight.
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Old 08-27-2014, 07:05 PM   #13
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I think he mentioned the Harley--900llbs-- was directly over the axles.
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