What classifies a Load Ranges D or E Tire? - Ford Powerstroke Diesel Forum
Wheels, Tires, and Brakes Here's where you can post all your topics and questions about wheels, tires and brakes.
Sponsored by Discount Tire

Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 02-12-2009, 02:48 PM
Compression Ignition Addict
 

Join Date: Jul 2006
Posts: 515
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
What classifies a Load Ranges D or E Tire?

Why are the Nitto Terra Grapplers in 305/55/20 size only rated to 65psi and 3160lbs instead of 80psi and 3640lbs like the rest of the LOAD E tires? Can these still be used on the F350s if we plow, or carry a lot of weight often or trailer constantly with the trucks?

Is there something on paper that states a D tire holds 60-65psi and at least 3000lbs weight, and a E holds at least 3200lbs weight and is 80psi? After seeing these "E " load Nitto specs im just confused.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 02-12-2009, 09:05 PM
Powerstroke.org Rookie
 

Join Date: Jan 2009
Posts: 26
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Some Terra Grapplers are D rated, and others are E rated. If you need a 305/55/20 try the Nitto Dura Grapplers.
Reply With Quote Quick reply to this message
  #3  
Old 02-13-2009, 08:44 PM
Compression Ignition Addict
 

Join Date: Jul 2006
Posts: 515
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by JamesE View Post
Some Terra Grapplers are D rated, and others are E rated. If you need a 305/55/20 try the Nitto Dura Grapplers.
There is a set thats less than a year old on ebay, theyre E rated 305/55/20s Terra Grapplers, but only 65psi and 3100~lb weight load capacity? Is that really E or only D?
Reply With Quote Quick reply to this message
  #4  
Old 02-13-2009, 08:51 PM
Compression Ignition Addict
 

Join Date: May 2007
Location: America
Posts: 6,782
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
There is load range which is C, D, E, ect. What you really want to look at is payload capacity not the load range. Load range is a general symbol. Depending on tire size you can have a bunch different payload capacities with just 1 load range. I run D's and I've seen D's with a payload of 2900 lbs. to 3500 lbs. It depends on tire size.
Reply With Quote Quick reply to this message
  #5  
Old 02-13-2009, 08:56 PM
Super Moderator

 

Join Date: Nov 2008
Posts: 13,271
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 2 reviews
Also, the load range tells what ply the tire is. If its load range D, then its a 8 ply tire. Load range E, 10 ply etc...
Reply With Quote Quick reply to this message
  #6  
Old 02-14-2009, 12:02 AM
Premium Member
 

Join Date: Nov 2007
Location: Buffalo, NY
Posts: 1,824
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Goose350 View Post
Also, the load range tells what ply the tire is. If its load range D, then its a 8 ply tire. Load range E, 10 ply etc...
Its "ply rated" from back in Bias ply tire days even most E range tires are still only 4-6 plys.

I would be concerned more with the load capacity, I have 33X12.5X20 Toyo MTs that are E range and they only are rated for 2600
Reply With Quote Quick reply to this message
  #7  
Old 02-14-2009, 07:07 AM
Compression Ignition Addict
 

Join Date: Jul 2006
Posts: 515
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by AFBLUE View Post
Its "ply rated" from back in Bias ply tire days even most E range tires are still only 4-6 plys.

I would be concerned more with the load capacity, I have 33X12.5X20 Toyo MTs that are E range and they only are rated for 2600
yeah, well the 305/55/20E Nittos say theyre E , but if my stock contis take 80psi and 3640lbs, going down to a 3200lb capacity just limited my total by almost 1000lbs

truck is about 7500 filled with a driver ~
1000lbs for snow plow setup
150lbs for rear spreader
3000-3500lbs in salt usually
can have an extra passenger

thats very close to the total capacity of the tires.
Reply With Quote Quick reply to this message
  #8  
Old 02-14-2009, 07:10 AM
Powerstroke.org Sponsor
 

Join Date: Apr 2008
Posts: 834
Thanks: 12
Thanked 13 Times in 10 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by RamAirfreak98ss View Post
There is a set thats less than a year old on ebay, theyre E rated 305/55/20s Terra Grapplers, but only 65psi and 3100~lb weight load capacity? Is that really E or only D?
The 305/55-20 Terra Grappler is indeed E rated (10 ply rated). Each tire manufacture test their tires and rate them accordingly. Your truck calls for a LT tire with a minimum load index of 125 or higher. These Nittos only have a 121 load index.

Last edited by Discount Tire; 02-14-2009 at 07:13 AM.
Reply With Quote Quick reply to this message
  #9  
Old 02-14-2009, 08:25 AM
Compression Ignition Addict
 

Join Date: Jul 2007
Location: Linton,IN
Posts: 993
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Does a D rated tire wear faster than an E rated tire on our 8,000# trucks
Reply With Quote Quick reply to this message
  #10  
Old 02-14-2009, 10:47 AM
Powerstroke.org Sponsor
 

Join Date: Apr 2008
Posts: 834
Thanks: 12
Thanked 13 Times in 10 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Redneck47441 View Post
Does a D rated tire wear faster than an E rated tire on our 8,000# trucks
That really depends on the use. As a daily driver, as long as the psi is set correctly, they typically wear the same. When towing, you may see more life out of the E rated tires.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 12:41 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors