Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 01-24-2016, 07:12 AM   #1
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 2,422
Send a message via AIM to tmw188
Tire speed ratings

I cannot find my tire speed rating on any charts. I must be reading something wrong. The tire is Toyo with the letters following tire size M154Z G A/P (all position). The speed rating is the letter Z or G either way that doesn't seem to be right maybe they typed the wrong letter on the invoice?


iPad using iRV2 - RV Forum
__________________

__________________
Dolphin 6376LX, 3 slide, W-24, Toyo tires, Blue OX Aventa LX, Patriot brake assist, 09' Saturn Vue
tmw188 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 01-24-2016, 09:55 AM   #2
Senior Member
 
RodK's Avatar
 
Triple E Owners Club
Join Date: Feb 2014
Location: Oakbank, Manitoba, Canada
Posts: 282
If you go to Toyos website, you will see that most sizes of the m154 are speed rated L= 75 mph. The G is the load rating = 14 ply . No mention of a Z anywhere.
__________________

__________________
1999 Triple E Commander 3503FS on 20,500 F53.
RodK is offline   Reply With Quote
Old 01-24-2016, 10:58 AM   #3
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 2,422
Send a message via AIM to tmw188
Tire speed ratings

Quote:
Originally Posted by RodK View Post
If you go to Toyos website, you will see that most sizes of the m154 are speed rated L= 75 mph. The G is the load rating = 14 ply . No mention of a Z anywhere.

I was on there site but didn't see it? So I wonder what the G is for? Thanks.


iPad using iRV2 - RV Forum
__________________
Dolphin 6376LX, 3 slide, W-24, Toyo tires, Blue OX Aventa LX, Patriot brake assist, 09' Saturn Vue
tmw188 is offline   Reply With Quote
Old 01-24-2016, 11:25 AM   #4
Senior Member
 
FastEagle's Avatar
 
Join Date: Sep 2009
Posts: 819
On truck tires, LT tires and ST tires the letter following the service description found on he tire sidewall will be its speed rating. A service description will look like this: 129/125 L. The "L" is 75 MPH.

http://www.irv2.com/photopost/showfull.php?photo=29711

The above info is from a ST tire.
FastEagle is offline   Reply With Quote
Old 01-24-2016, 11:35 AM   #5
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 2,422
Send a message via AIM to tmw188
Quote:
Originally Posted by tmw188 View Post
I was on there site but didn't see it? So I wonder what the G is for? Thanks.


iPad using iRV2 - RV Forum

Went to look at the tires and yes it is shown on the tires but not on the invoice that I was looking at that came with the coach. All is well, they just don't show it on the tire model.


iPad using iRV2 - RV Forum
__________________
Dolphin 6376LX, 3 slide, W-24, Toyo tires, Blue OX Aventa LX, Patriot brake assist, 09' Saturn Vue
tmw188 is offline   Reply With Quote
Old 01-24-2016, 11:38 AM   #6
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 2,422
Send a message via AIM to tmw188
Tire speed ratings

Quote:
Originally Posted by FastEagle View Post
On truck tires, LT tires and ST tires the letter following the service description found on he tire sidewall will be its speed rating. A service description will look like this: 129/125 L. The "L" is 75 MPH.

http://www.irv2.com/photopost/showfull.php?photo=29711

The above info is from a ST tire.

So then in the example you show also shown is the weight rating for the tire as a single and then for the rear lets say as a dual is the other weight rating. Looks as if the G in the tire model is the load range?


iPad using iRV2 - RV Forum
__________________
Dolphin 6376LX, 3 slide, W-24, Toyo tires, Blue OX Aventa LX, Patriot brake assist, 09' Saturn Vue
tmw188 is offline   Reply With Quote
Old 01-24-2016, 04:31 PM   #7
Senior Member
 
RodK's Avatar
 
Triple E Owners Club
Join Date: Feb 2014
Location: Oakbank, Manitoba, Canada
Posts: 282
Quote:
Originally Posted by tmw188 View Post
I was on there site but didn't see it? So I wonder what the G is for? Thanks.


iPad using iRV2 - RV Forum

Reread my first reply. 👍🏻
__________________
1999 Triple E Commander 3503FS on 20,500 F53.
RodK is offline   Reply With Quote
Old 01-24-2016, 05:48 PM   #8
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 2,422
Send a message via AIM to tmw188
Tire speed ratings

Quote:
Originally Posted by RodK View Post
Reread my first reply. 👍🏻
I hate it when that happens thanks again!
__________________
Dolphin 6376LX, 3 slide, W-24, Toyo tires, Blue OX Aventa LX, Patriot brake assist, 09' Saturn Vue
tmw188 is offline   Reply With Quote
Old 01-24-2016, 10:52 PM   #9
Senior Member
 
Join Date: Oct 2011
Posts: 250
Some of the newer tires do not have a load range designation of G or H, but are shown as 14 or 16 ply.
__________________
2011 Monaco Knight 36', MaxForce 10, 350HP, 1150 lbs. Torque.
2008 Saturn Vue Toad, SMI Duo Brake, Roadmaster Sterling Tow Bar
San Antonio, TX Home Port
wigginsjsr is offline   Reply With Quote
Old 01-25-2016, 09:32 AM   #10
Senior Member
 
Grey Ghost I's Avatar
 
National RV Owners Club
Ford Super Duty Owner
Join Date: Sep 2014
Location: Georgia
Posts: 587
Whether it reads 14 or 16 ply, it is really only two ply. The 14 ply rating means it is equivalent to 14 cotton plies. Now I will sit back and let the tire guys correct that statement. Hey, gives us something to talk about!
__________________
Jerry and Barbara,
2005 Nat Sea Breeze 1321
2010 Honda CR-V toad
Grey Ghost I is offline   Reply With Quote
Old 01-25-2016, 10:03 AM   #11
Senior Member
 
Steve Ownby's Avatar
 
Join Date: Nov 2008
Location: Cosby, Tn
Posts: 6,399
Quote:
Originally Posted by Grey Ghost I View Post
Whether it reads 14 or 16 ply, it is really only two ply. The 14 ply rating means it is equivalent to 14 cotton plies. Now I will sit back and let the tire guys correct that statement. Hey, gives us something to talk about!

Not a tire guy, and agree with most of your post. Many of the all steel tires have one side wall ply and 4-5 tread plys. The old ply rating is a throwback to the 1950s.
__________________
Steve Ownby
Full time since 2007
2003 Monaco Signature
Steve Ownby is offline   Reply With Quote
Old 01-25-2016, 11:13 AM   #12
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,096
Quote:
Some of the newer tires do not have a load range designation of G or H, but are shown as 14 or 16 ply.
It's not a question of newer or older - just different rating schemes. As others have said, the "plies" is now a rating rather than an actual ply count, but the system dates from the days when it was an actual sidewall ply count. Probably hasn't been that since the 50's, though.

The Load Rating letter scheme and the Load Index number rating scheme are both newer than ply rating, but many tires makers continue to display a ply rating because it is familiar to many buyers. Eventually they all translate to a weight carrying capacity, which is all that really matters.
__________________

__________________
Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Calculating Proper Tire Inflation Pressures gjurrens Class A Motorhome Discussions 22 01-18-2016 09:06 PM
Tire Safety Max1 Excel Owner's Forum 2 12-27-2015 04:10 PM
80 MPH speed limits, in many states, yeah sure. FIRE UP MH-General Discussions & Problems 46 01-07-2015 02:33 PM
What the Heck Happened to my Tire? VAParrothead MH-General Discussions & Problems 36 10-20-2014 12:34 AM
A big THANK YOU for the tire monitors! dkperez 5th Wheel Discussion 15 04-30-2014 11:58 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:37 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.