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 - Help Zone - Dodge Ram Problems, Complaints, & Solutions - Maintenance & Re > 4TH Generation Dodge Ram 2009+ Dodge Ram Trucks > Towing


Notices

Towing 4th Gen Dodge Ram Towing Questions


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

Reply
 
Thread Tools
  #1  
Old 01-04-2014, 09:22 AM
mean4g mean4g is offline
Dodge Ram Forum Newcomer
 
Join Date: Dec 2013
Location: Alaska
Age: 37
Posts: 13
Gender: Male
Vehicle: 2014 Dodge Ram 1500 Tradesman
Trim Level: Tradesman
Color: granite
Engine: 2013-20?? 220ci (3.6L) Pentastar 305hp 269lb/ft
Rep Power: 0
Rep:10
mean4g is on a distinguished road
Default 18" wheels, towing and MPG

I will have a 2014 Ram 1500 4x4, QC, Pentastar with the 3.55 rear end delivered here in a few months. Unfortunately my truck comes with ugly 17" steelies. So I am in the market at look at upgrading. Was looking at some 18" wheels and wanted to still come close the OEM size of tires for gearing, towing, and MPG reasons. what I was looking at was…

18x9" wheels weigh approximately 25-28 pounds per wheel
275/65/18 all-terrain E rated tires weight 55-58 pounds
total height is 32" for most tires (just slightly taller than the 31.7" OEM 265/70/17s)


Would my towing be greatly affected over the OEM 17s? MPG difference 1-2 maybe? From what I hear the 20's affect it greatly, however they are ridiculously heavy and 33" tall. thoughts? Should I not even worry about it and go for it even though I am on the Pentastar which has much less power than the hemi? Or should I go for a 17" wheel (2-3 pounds lighter), and go for slightly lighter all terrain 265/70/17 tires (2-3 pounds)? Also the 9" wide wheels I am looking at are 0 offset (18MM's different from the 9" wide OEM ones). So would these 275s stick out or rub on a 0 offset? I just want to make sure they tuck correctly and don't rub on the fenders as well. thanks.

Last edited by mean4g; 01-04-2014 at 09:27 AM.
Reply With Quote
Sponsored links
  #2  
Old 01-04-2014, 10:26 AM
TJC.geotech TJC.geotech is offline
Dodge Ram Forum Senior Member!
 
Join Date: Oct 2013
Location: Ottawa
Posts: 375
Gender: Male
Vehicle: 2014 Ram 1500 Crew
Trim Level: Big Horn
Color: Granite
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 2
Rep:99
TJC.geotech will become famous soon enough
Default

I would look very carefully at the load rating of any 18" rim that weighs less than 30 lbs.

The biggest hit to mileage will be from the E-rated tires.
Reply With Quote
  #3  
Old 01-04-2014, 11:21 AM
mean4g mean4g is offline
Dodge Ram Forum Newcomer
 
Join Date: Dec 2013
Location: Alaska
Age: 37
Posts: 13
Gender: Male
Vehicle: 2014 Dodge Ram 1500 Tradesman
Trim Level: Tradesman
Color: granite
Engine: 2013-20?? 220ci (3.6L) Pentastar 305hp 269lb/ft
Rep Power: 0
Rep:10
mean4g is on a distinguished road
Default

Quote:
Originally Posted by TJC.geotech View Post
I would look very carefully at the load rating of any 18" rim that weighs less than 30 lbs.

The biggest hit to mileage will be from the E-rated tires.
well tirerack sell a ton of truck wheels under 30 pounds in the 18x8.5-9" range. Ranging from Dick Cepeks to Ultras etc. Honestly they seem pretty heavy to me overall. Thoughts?
Reply With Quote
  #4  
Old 01-04-2014, 11:48 AM
TJC.geotech TJC.geotech is offline
Dodge Ram Forum Senior Member!
 
Join Date: Oct 2013
Location: Ottawa
Posts: 375
Gender: Male
Vehicle: 2014 Ram 1500 Crew
Trim Level: Big Horn
Color: Granite
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 2
Rep:99
TJC.geotech will become famous soon enough
Default

Unless it's a forged wheel, less than 30 lbs is more of a 'designer' product. You can see the full specs on Cepeks site.

E-rated tires are generally rated in the neighborhood of 3300~3500 lbs. The five lug Cepeks are 1000 lbs less than that.
Reply With Quote
  #5  
Old 01-05-2014, 03:13 AM
mean4g mean4g is offline
Dodge Ram Forum Newcomer
 
Join Date: Dec 2013
Location: Alaska
Age: 37
Posts: 13
Gender: Male
Vehicle: 2014 Dodge Ram 1500 Tradesman
Trim Level: Tradesman
Color: granite
Engine: 2013-20?? 220ci (3.6L) Pentastar 305hp 269lb/ft
Rep Power: 0
Rep:10
mean4g is on a distinguished road
Default

Quote:
Originally Posted by TJC.geotech View Post
Unless it's a forged wheel, less than 30 lbs is more of a 'designer' product. You can see the full specs on Cepeks site.

E-rated tires are generally rated in the neighborhood of 3300~3500 lbs. The five lug Cepeks are 1000 lbs less than that.

So the designer wheels (Cepek, Ultra, and XD's)are probably suited for a C or a D rated tire I am assuming considering their weight?

Also how noticeable is the stability of an E rated tire at say 40 psi vs a C or D rated tire at 40 psi? Also any idea on changing my towing abilities for the rough idea of 18's and 265/65/18 "E" rated tires? thanks in advance.

Last edited by mean4g; 01-05-2014 at 08:56 AM.
Reply With Quote
  #6  
Old 01-05-2014, 11:18 AM
TJC.geotech TJC.geotech is offline
Dodge Ram Forum Senior Member!
 
Join Date: Oct 2013
Location: Ottawa
Posts: 375
Gender: Male
Vehicle: 2014 Ram 1500 Crew
Trim Level: Big Horn
Color: Granite
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 2
Rep:99
TJC.geotech will become famous soon enough
Default

You should not run an e-rated tire at 40 psi. They are designed to be inflated to 60~80 psi. Low inflation pressure is the number one reason for tire failure. This is how Ford and Firestone got into so much trouble with the Explorer.

An 18" E-rated tire at 60psi would probably feel very similar to the factory P rated 20" setup. Firm but not harsh.

Going to an LT tire will take some of the sway out of the truck, but you will still be limited to the axle rating of the truck. The axle becomes the weak link and believe me, you do not want to break an axle towing a trailer. Some prudence and common sense is required here.
Reply With Quote
  #7  
Old 01-05-2014, 04:15 PM
Dragonmaster13 Dragonmaster13 is offline
Dodge Ram Forum Senior Member!
 
Join Date: Apr 2012
Location: Calgary, Alberta, Canada
Posts: 198
Gender: Male
Vehicle: 2012 Ram 1500 SXT Crew Cab
Trim Level: SXT
Color: White
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:14
Dragonmaster13 is on a distinguished road
Default

as long as the wheels a rated to carry more than your gawr they are fine. check the max pressure rating of the wheels to ensure they can take the lt tire max pressure, some cant

you will not notice any difference towing other than less sway/squirm.
Reply With Quote
  #8  
Old 01-06-2014, 12:16 PM
mean4g mean4g is offline
Dodge Ram Forum Newcomer
 
Join Date: Dec 2013
Location: Alaska
Age: 37
Posts: 13
Gender: Male
Vehicle: 2014 Dodge Ram 1500 Tradesman
Trim Level: Tradesman
Color: granite
Engine: 2013-20?? 220ci (3.6L) Pentastar 305hp 269lb/ft
Rep Power: 0
Rep:10
mean4g is on a distinguished road
Default

Quote:
Originally Posted by TJC.geotech View Post
You should not run an e-rated tire at 40 psi. They are designed to be inflated to 60~80 psi. Low inflation pressure is the number one reason for tire failure. This is how Ford and Firestone got into so much trouble with the Explorer.

An 18" E-rated tire at 60psi would probably feel very similar to the factory P rated 20" setup. Firm but not harsh.

Going to an LT tire will take some of the sway out of the truck, but you will still be limited to the axle rating of the truck. The axle becomes the weak link and believe me, you do not want to break an axle towing a trailer. Some prudence and common sense is required here.
thanks for the advice. I am assuming that the weight of the tire and wheel combo doesn't have much affect on the towing ability as overall diameter. The weight just hurts my MPG. So would it be safe to assume my plan with the 18" wheel combo (similar overall diameter to OEM) would only hurt a little bit of fuel mileage and most likely no decrease of towing ability (as long as the wheels have the capacity to handle the load of course)?
Reply With Quote
  #9  
Old 01-06-2014, 01:49 PM
TJC.geotech TJC.geotech is offline
Dodge Ram Forum Senior Member!
 
Join Date: Oct 2013
Location: Ottawa
Posts: 375
Gender: Male
Vehicle: 2014 Ram 1500 Crew
Trim Level: Big Horn
Color: Granite
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 2
Rep:99
TJC.geotech will become famous soon enough
Default

Quite honestly if you're just towing to the capacity of the V6, then the P-rated tires are more than adequate. Even if you exceed the GCWR by a thousand pounds or so.... I wouldn't sweat it. Technically the E-rated tires will lower the rated towing capacity, however they are considered unsprung weight, so really only the braking performance will be affected, by an imperceptible amount.
Reply With Quote
  #10  
Old 01-09-2014, 01:32 AM
smurfs's Avatar
smurfs smurfs is offline
Dodge Ram Forum Member
 
Join Date: Nov 2013
Location: Swift Current, Saskatchewan
Age: 37
Posts: 71
Gender: Male
Vehicle: 2013 Ram 1500
Trim Level: Laramie
Color: Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:105
smurfs will become famous soon enoughsmurfs will become famous soon enough
Default

The LT E rated tires are more than your wheels are rated to carry, and unless you are riding with 60PSI in tow, you aren't gaining a thing- in fact, they will likely wear funny and quicker possibly leading to a failure. I run 50-55 daily in my E rated on the 20" rims I have, and boost the rear to 60 when I am loading heavy or plan on towing. This is the same as I did on my previous truck. I have NO idea what they are rated to carry (OEM Lariat 20's) and I can't find it online, but I have heard from the tire shops that they don't see issues with them until you start inflating to the 75-80PSI mark. 55-60 gives me the equivalent load capacity of the P rated tires at 44PSI, but they are a bit firmer- so I don't get that squishy feel.

As for a difference in mileage- you'll notice it unhitched and hitched. It's that little extra width, the more aggressive tread, and the added weight. You'll feel it too.

Like mentioned, be mindful of your axle rating- don't load to the capacity of your tire. Even the P rated are capable of more than your axle is. The only benefit for an E rated tire on a 1500 is for towing and taking out some of that sway in the backend of the truck.

Last edited by smurfs; 01-09-2014 at 01:38 AM.
Reply With Quote
Reply

Bookmarks

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


Advertisement






All times are GMT -4. The time now is 04:56 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