DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum

Go Back   DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum > Dodge Ram Forum - Mod Zone - Custom Dodge Ram Mods - Dodge Ram Performance > Dodge Ram Wheels And Tires


Notices

Dodge Ram Wheels And Tires General discussion related to wheels and tires.


Latest Vendor News
AutoAnything
Addictive Desert Designs!
United Radio
Bayou Goat Mounts

Reply
 
Thread Tools
  #1  
Old 09-07-2011, 10:21 PM
Boubou's Avatar
Boubou Boubou is offline
Dodge Ram Forum Senior Member!
 
Join Date: Apr 2010
Location: Kingston Ontario Canada
Age: 50
Posts: 387
Gender: Female
Vehicle: 2010 Dodge Ram QC 4X4 Hemi
Trim Level: 4X4 SLT Hemi
Color: Light greystone
Rep Power: 0
Rep:54
Boubou will become famous soon enough
Default Towing tires

I have a 2010 RAM and the original 20" Wrangler tires.
I'm towing a 7000 lbs travel trailer. Should I "worry" about the tires or are the tires safe to tow?
Reply With Quote
Sponsored links
  #2  
Old 09-08-2011, 12:57 PM
starquestbd22's Avatar
starquestbd22 starquestbd22 is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2011
Location: NC
Age: 32
Posts: 2,645
Gender: Male
Vehicle: 2004 Dodge Ram 1500 4X4
Trim Level: Sport quad cab
Color: Bright Silver Metallic
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 5
Rep:360
starquestbd22 is just really nicestarquestbd22 is just really nicestarquestbd22 is just really nicestarquestbd22 is just really nice
Default

I would think those tires are fine for towing your trailer....especially as long as your are not exceeding the manufacturer's tow rating for your truck in which case you would probably be asking for trouble anyway, lol.

Most owners dislike the stock Goodyears and get rid of them as soon as possible primarily because they have crappy road manners compared to other available tires. They don't handle well normally and handle even worse in the rain.

If you pull the trailer a lot then you would probably be happier in the long run and get better service out of a different tire (like Cooper Zeons which are extra load rated or maybe even a true E-load rated tire). The Goodyears don't compare well to other available and popular tires for these trucks but I don't think you need to worry about imminent catastrophic failure from them.
__________________
06-08 chrome clads w/33" Cooper Discoverer H/T Plus, Mopar tailgate spoiler, debadged door trim & tailgate emblems, 13" antenna, LED dome & maps, Magnaflow 22" SI/DO, 18% tint, "HEMI" hood spears, VHT tinted tails & third brake light, Lamin-x optic blue fogs, leveled w/McGaughys 2" drop shackles.
Reply With Quote
  #3  
Old 09-08-2011, 01:47 PM
snrusnak's Avatar
snrusnak snrusnak is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2011
Location: Orlando
Age: 27
Posts: 13,388
Gender: Male
Vehicle: 2010 Dodge Ram 1500
Trim Level: SLT
Color: White
Engine: 2008-20?? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
Rep Power: 12
Rep:1385
snrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud of
Default

I agree with starquest, if you're are within your tow rating then your tires aren't going to fail (shouldn't anyway), but when you get new tires you may look into ones with a higher load rating (I also have the zeons and love them, although I hardly ever tow...)
__________________
Sean

Breathing in and out is good enough for me.
Reply With Quote
  #4  
Old 09-08-2011, 06:05 PM
erm
Guest
 
Posts: n/a
Default

Check the "Load Index" rating of your stock tires. It should be right on the sidewall. Then, compare that with this:

Load Index

P195/60R15 87S - The load index (87) is the tire size's assigned numerical value used to compare relative load carrying capabilities. In the case of our example the 87 identifies the tires ability to carry approximately 1,201 pounds.

The higher the tire's load index number, the greater its load carrying capacity.

89 = 1,279 pounds
88 = 1,235 pounds
87 = 1,201 pounds
86 = 1,168 pounds
85 = 1,135 pounds

A tire with a higher load index than that of the Original Equipment tire indicates an increase in load capacity. A tire with a load index equal to that of the Original Equipment tire indicates an equivalent load capacity. A tire with a lower load index than the Original Equipment tire indicates the tire does not equal the load capacity of the original.

Typically, the load indexes of the tires used on passenger cars and light trucks range from 70 to 110. A load index is a rating for each tire. So, multiply the load index by 4. For instance, a 96 Load Index tire gives you 1,609 pounds per tire X 4 = 6436 pounds

Load Index Pounds
71 761
72 783
73 805
74 827
75 853
76 882
77 908
78 937
79 963
80 992
81 1019
82 1047
83 1074
84 1102
85 1135
86 1168
87 1201
88 1235
89 1279
90 1323
91 1356
92 1389
93 1433
94 1477
95 1521
96 1565
97 1609
98 1653
99 1709
100 1764
101 1819
102 1874
103 1929
104 1984
105 2039
106 2094
107 2149
108 2205
109 2271
110 2337

Tire Load Range and Maximum Load

A tire's maximum load is the most weight the tire is designed to carry. Since a tire's load carrying capacity is related to the tire's size and how much inflation pressure is actually used, maximum loads are rated with the tire inflated to an industry assigned inflation pressure.

LT-Metric and Flotation Light Truck Tires Max Load Pressure
Load Range B (LRB) 35 psi (240 kPa)***
Load Range C (LRC) 50 psi (350 kPa)***
Load Range D (LRD) 65 psi (450 kPa)***
Load Range E (LRE) 80 psi (550 kPa)***
Load Range F (LRF) 95 psi (650 kPa)***

So, identify your tire load range, note the maximum PSI you can put in it & find your tire load index number on the sidewall.

Remember, a load index rating is what the tire can support at the industry standard inflation index above. And it is a rating to determine load carrying capacity. You can't just multiply the load index by 4 (the number of tires on your truck ) to get the proper tire. You'll end up with more tire than you need. What is needed, though, is the weight of your truck at the front axle and the back axle (truck is loaded with fuel, people and cargo + the trailer is hooked to it) to see if your front and rear tires support the axle weight. (Load index X 2 [you have two tires per axle])

It's complicated. So, if you can post the load index on your tire and the load range (both of which should be on your tire sidewall), we can figure it out from there.

Last edited by erm; 09-08-2011 at 06:16 PM.
Reply With Quote
  #5  
Old 09-08-2011, 07:06 PM
starquestbd22's Avatar
starquestbd22 starquestbd22 is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2011
Location: NC
Age: 32
Posts: 2,645
Gender: Male
Vehicle: 2004 Dodge Ram 1500 4X4
Trim Level: Sport quad cab
Color: Bright Silver Metallic
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 5
Rep:360
starquestbd22 is just really nicestarquestbd22 is just really nicestarquestbd22 is just really nicestarquestbd22 is just really nice
Default

A Goodyear Wrangler HP tire in 275/60/20 has a load index of 114 (max load 2601 pounds) and load range SL (max load at 35psi) even though the max inflation pressure for the tire is 44 psi.

So at 35 psi the max load his tires are designed to handle is 5202 pounds per axle, right? The front is obviously nowhere near that and would likely be even less with a trailer attached but how could we possible hope to determine the weight of the rear axle from the truck and trailer combined? We could likely determine how much weight the truck is putting on the rear axle by finding the total weight and the front/rear split but how to we determine how much extra weight the trailer is adding to the truck versus how much it's own tires are supporting?
__________________
06-08 chrome clads w/33" Cooper Discoverer H/T Plus, Mopar tailgate spoiler, debadged door trim & tailgate emblems, 13" antenna, LED dome & maps, Magnaflow 22" SI/DO, 18% tint, "HEMI" hood spears, VHT tinted tails & third brake light, Lamin-x optic blue fogs, leveled w/McGaughys 2" drop shackles.
Reply With Quote
  #6  
Old 09-08-2011, 07:09 PM
erm
Guest
 
Posts: n/a
Default

You can do the front to rear weight bias calculation and guess but since BouBou is running about 700 pounds of tongue weight, depending on how loaded the trailer is, we can determine what's needed at the back by actually weighing the truck front axle, then the rear axle; with the loaded trailer hooked to it and the truck loaded with fuel, people and cargo; as I noted at the bottom of my post.
Reply With Quote
  #7  
Old 09-09-2011, 11:29 AM
starquestbd22's Avatar
starquestbd22 starquestbd22 is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2011
Location: NC
Age: 32
Posts: 2,645
Gender: Male
Vehicle: 2004 Dodge Ram 1500 4X4
Trim Level: Sport quad cab
Color: Bright Silver Metallic
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 5
Rep:360
starquestbd22 is just really nicestarquestbd22 is just really nicestarquestbd22 is just really nicestarquestbd22 is just really nice
Default

Sorry, I must have missed the part about weighing the front and rear axles of the truck.

According to this site...
http://www.dodge.com/bodybuilder/201...ammlup1500.pdf

His truck weighs 5362 pounds containing all needed fluids and fuel and is split 3113 front/2249 rear which you would expect from a pickup truck. So if you take the 2249 pound rear axle weight and add the max payload weight (1310 pounds) and the max trailer tongue weight for the class IV hitch (1045 pounds) you still only have 4604 pounds, well within the load carrying ability of the stock tires.

And just for your info Boubou....if you have the 3.55 rear axle ratio your max towing weight is 8450 pounds and if you have the 3.92 it is raised to 9950 although you should keep in mind the 1045 pound max tongue weight for a class IV hitch.
__________________
06-08 chrome clads w/33" Cooper Discoverer H/T Plus, Mopar tailgate spoiler, debadged door trim & tailgate emblems, 13" antenna, LED dome & maps, Magnaflow 22" SI/DO, 18% tint, "HEMI" hood spears, VHT tinted tails & third brake light, Lamin-x optic blue fogs, leveled w/McGaughys 2" drop shackles.

Last edited by starquestbd22; 09-09-2011 at 11:39 AM.
Reply With Quote
  #8  
Old 10-12-2011, 08:21 AM
Boubou's Avatar
Boubou Boubou is offline
Dodge Ram Forum Senior Member!
 
Join Date: Apr 2010
Location: Kingston Ontario Canada
Age: 50
Posts: 387
Gender: Female
Vehicle: 2010 Dodge Ram QC 4X4 Hemi
Trim Level: 4X4 SLT Hemi
Color: Light greystone
Rep Power: 0
Rep:54
Boubou will become famous soon enough
Default

so truck and trailer specs

steer axle: 3320
drive axle: 3460
trailer axle: 5140
gross weight: 11920

that's loaded and ready to go

Truck by itself, passengers, dogs and fuel

Steer axle 3440
drive axle 2600
gross weight 6040 (I think need to remove about 40 lbs cuz I forgot to remove the ball hitch and it's pretty heavy)
Reply With Quote
  #9  
Old 10-12-2011, 10:26 AM
pupdawg pupdawg is offline
Dodge Ram Forum Senior Member!
 
Join Date: May 2011
Posts: 269
Gender: Male
Vehicle: 2012 Dodge Ram
Rep Power: 0
Rep:45
pupdawg is on a distinguished road
Default

I have a good friend who owns a tire shop and he advised me to do a tire swap immediately...he knows the trailer I pull. he said they might run fine but do you want that sitting in the back of your mind running down the I-state at 70-75 mph with yer trailer...or have to deal with a failure... Just my ramblings on this...
Reply With Quote
  #10  
Old 10-12-2011, 10:59 AM
starquestbd22's Avatar
starquestbd22 starquestbd22 is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2011
Location: NC
Age: 32
Posts: 2,645
Gender: Male
Vehicle: 2004 Dodge Ram 1500 4X4
Trim Level: Sport quad cab
Color: Bright Silver Metallic
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 5
Rep:360
starquestbd22 is just really nicestarquestbd22 is just really nicestarquestbd22 is just really nicestarquestbd22 is just really nice
Default

Those truck only numbers are very close to the factory specs posted on the site I linked. As I suspected, the loaded trailer putting pressure on the rear of the truck actually takes a little weight off of the front axle and obviously adds quite a bit to the rear. So basically you are putting about 3460 pounds of load on your rear axle where your stock tires are rated to handle a max of 5202 pounds per axle. Your loaded weight on the rear axle is actually extremely close to the unloaded weight that your truck is carrying on the front axle everyday. I don't think you have anything to worry about.

That being said, the stock Goodyears still suck. Doesn't seem like you need to be in any great hurry to get rid of them to me but if it's in your budget it would likely be a worthwhile upgrade. As previously noted, you will probably experience better performance and longer tire life with a heavier load rated tire.
__________________
06-08 chrome clads w/33" Cooper Discoverer H/T Plus, Mopar tailgate spoiler, debadged door trim & tailgate emblems, 13" antenna, LED dome & maps, Magnaflow 22" SI/DO, 18% tint, "HEMI" hood spears, VHT tinted tails & third brake light, Lamin-x optic blue fogs, leveled w/McGaughys 2" drop shackles.

Last edited by starquestbd22; 10-12-2011 at 11:03 AM.
Reply With Quote
Reply

Bookmarks

Tags
tires, towing, trailer

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Official Off-Road tire thread!!!! RamCountry Dodge Ram Wheels And Tires 87 12-14-2014 12:22 AM
Rain + stock tires = new tires tan brule Dodge Ram Wheels And Tires 7 08-13-2011 11:43 AM
Towing Tires NORFLA71 Towing 5 07-22-2011 11:44 PM
SS/T or Indy Rims + tires? 98sst Dodge Ram Parts and Accessories for Sale - Trade - Want To Buy! 1 03-12-2011 07:15 PM
20 inch tires for towing CPRAM Dodge Ram Wheels And Tires 3 01-27-2011 03:30 AM


Advertisement






All times are GMT -4. The time now is 02:12 AM.


= Copyright RamForumZ.com a Gigathreads.com Network Site =Ad Management by RedTyger
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vB.Sponsors


=Gigathreads Network=
CLUBS MOPAR NATION DSM GPMM MAMM JAM
DIESEL Diesel Forum      
CHEVY Chevy Camaro Forum Chevy Volt Forum    
CHRYSLER Chrysler 300C Forum      
DODGE Dodge Avenger Forum Dodge Caliber Forum Dodge Challenger Forum Dodge Charger Forum
  Dodge Circuit Forum Dodge Hornet Forum Dodge Magnum Forum Dodge Nitro Forum
  Dodge Ram Forum Dodge Dakota Forum Dodge Durango Forum Dodge Dart Forum
FORD Ford Raptor Forum Ford F150 Forum Ford F100 Forum  
JEEP Jeep Forum      
PONTIAC Pontiac G8 Forum      
SRT SRT Viper Forum SRT Cuda Forum