Reply
 
Thread Tools Display Modes
Old 03-29-2016, 08:40 PM   #1
Senior Member
 
CWSWine's Avatar
 
Join Date: May 2015
Posts: 1,010
Speed Rating on ST tires.

I notice at the dealer most of the 2016 TT and 5er are coming with ST tires that are speed rated "L". The tech said that most of the inventory after 1 Dec are coming with the "L" rated tires. The tech also said there has been a "recent change" in NHTSA requirements to include speed ratings of "L" (75MPH) on all "new ST tires". That rating is not retroactive and doesn't apply to tires produced before the NHTSA changes. When the current stock is used up the unmarked "ST" tires will be history.

Can anyone in the tire business or with better connections confirm this?

Are these really upgrade construction or just "L" put on the same tires?

I have seen on Amazon ST tires rated "R" to 106 mph.

I still tow at 63 mph with my 5er with "L" rated tires because "I" feel any faster is not safe.
__________________

__________________
2017 Fleetwood Discovery LXE 40D Diesel Pusher 41 foot. CC 5740
2017 Solitude 310GK-R Pick Up Oct 24th.
2016 GMC Denali 1 ton Cargo Capacity 3722 lbs
Sold 2016 Keystone Montana 3711FL
Sold - 2015 Crusader 315RST 5th Wheel -
2015 Ford F350 SRW Cargo Capacity 3744
CWSWine is offline   Reply With Quote
Old 03-29-2016, 08:46 PM   #2
Site Team
 
wmtire's Avatar
 
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 15,020
Quote:
Originally Posted by CWSWine View Post

Can anyone in the tire business or with better connections confirm this?
Correct, see post here in this thread:

Ridgway Sport tires?

However, just because the tire can safely carry the load at higher speeds, doesn''t mean you should unsafely tow at higher speeds.
__________________

__________________
2011 Flagstaff 831 RLBSS

Ducks are just all-terrain chickens
wmtire is online now   Reply With Quote
Old 03-29-2016, 08:50 PM   #3
Senior Member
 
CWSWine's Avatar
 
Join Date: May 2015
Posts: 1,010
Quote:
Originally Posted by wmtire View Post
Correct, see post here in this thread:

Ridgway Sport tires?

However, just because the tire can safely carry the load at higher speeds, doesn''t mean you should unsafely tow at higher speeds.
Believe me I only tow around 63, I'm retired and not in hurry to get anywhere these days. I do feel better with the "L" tires since it gives my a safety margin and not 2 miles under the max speed ratings.

My other questions are these tires been updated or are they the same tires they have been making for years and now putting a "L" on them?
__________________
2017 Fleetwood Discovery LXE 40D Diesel Pusher 41 foot. CC 5740
2017 Solitude 310GK-R Pick Up Oct 24th.
2016 GMC Denali 1 ton Cargo Capacity 3722 lbs
Sold 2016 Keystone Montana 3711FL
Sold - 2015 Crusader 315RST 5th Wheel -
2015 Ford F350 SRW Cargo Capacity 3744
CWSWine is offline   Reply With Quote
Old 03-30-2016, 03:29 PM   #4
Senior Member
 
Airdale's Avatar
 
Join Date: Jul 2013
Posts: 731
The new ST tires with speed letters are a result of a tariff increase for imported tires. To avoid the increased tax assessment, tires previously manufacturer without speed restrictions displayed on their sidewalls had to start identifying the speed restrictions. The most acceptable way to do that is to manufacturer tires capable of attaining the speed restriction displayed on their sidewalls.

Because there is no speed letter for 65 MPH the ST tire manufacturers had to raise the bar. The TRA previously approved all ST tires to 65 MPH. They have now got onboard with the ST tire manufacturers and increased their approval to 81 MPH. That does not limit any individual ST tire manufacturer to that limit, it’s just the bar set by the TRA.

NHTSA certifies tires with their DOT seal of approval. Tires are independently tested, normally by a third party after initial manufacturer testing. NHTSA only steps in when serious problems occur.

J = 62
K = 68
L = 75
M = 81
N = 87
__________________
A Trailer Tire Poster
http://www.irv2.com/photopost/showfull.php?photo=15139
Airdale is offline   Reply With Quote
Old 03-30-2016, 05:46 PM   #5
Senior Member
 
Join Date: Jul 2015
Location: Louisiana
Posts: 642
Airdale, I just purchased a set of Maxxis 8008's. I'm like CWS that I rarely tow over 63, but I would like to know what the speed rating of the new tires is. I can find nothing on the sidewall of these tires that tells me the speed rating. The tires were made 6 months ago. How would I find out?
__________________
2016 Ford F-350 Lariat CC, 4x4 SRW. B&W turnover with extender. 2015 CC Silverback 29RE, fitted with Reese Goose Box. Amateur Extra Class K5TS, 2016 nights camped 16
Davidg is offline   Reply With Quote
Old 03-30-2016, 05:59 PM   #6
Senior Member
 
CWSWine's Avatar
 
Join Date: May 2015
Posts: 1,010
Quote:
Originally Posted by Davidg View Post
Airdale, I just purchased a set of Maxxis 8008's. I'm like CWS that I rarely tow over 63, but I would like to know what the speed rating of the new tires is. I can find nothing on the sidewall of these tires that tells me the speed rating. The tires were made 6 months ago. How would I find out?
Here is a pic of a "L" tire and what it looks like. I have been told they can sell the ones with no the speed ratings till their stock is depleted then all new imported tires will have to have a speed rating. Since this happened in mid 2015 it is to bad you were no armed with this information while tire shopping.

If there isn't a letter it rated to 65 miles per hour.

PS this tire was on a small TT on a dealer lot and is 2016 model
Attached Thumbnails
Click image for larger version

Name:	Speed Rating.jpg
Views:	156
Size:	152.4 KB
ID:	103369  
__________________
2017 Fleetwood Discovery LXE 40D Diesel Pusher 41 foot. CC 5740
2017 Solitude 310GK-R Pick Up Oct 24th.
2016 GMC Denali 1 ton Cargo Capacity 3722 lbs
Sold 2016 Keystone Montana 3711FL
Sold - 2015 Crusader 315RST 5th Wheel -
2015 Ford F350 SRW Cargo Capacity 3744
CWSWine is offline   Reply With Quote
Old 03-30-2016, 06:13 PM   #7
Senior Member
 
Join Date: Jul 2015
Posts: 161
I bought some of those 106 MPH tires , did not work , at about 77 MPH my wife started hitting me with her purse , blooded my nose . Tire dealer would not give me a refund !
__________________
wanderingbob is offline   Reply With Quote
Old 03-30-2016, 06:31 PM   #8
Senior Member
 
CWSWine's Avatar
 
Join Date: May 2015
Posts: 1,010
Quote:
Originally Posted by wanderingbob View Post
I bought some of those 106 MPH tires , did not work , at about 77 MPH my wife started hitting me with her purse , blooded my nose . Tire dealer would not give me a refund !
My wife would hit me long before 77 miles per hour...
__________________
2017 Fleetwood Discovery LXE 40D Diesel Pusher 41 foot. CC 5740
2017 Solitude 310GK-R Pick Up Oct 24th.
2016 GMC Denali 1 ton Cargo Capacity 3722 lbs
Sold 2016 Keystone Montana 3711FL
Sold - 2015 Crusader 315RST 5th Wheel -
2015 Ford F350 SRW Cargo Capacity 3744
CWSWine is offline   Reply With Quote
Old 03-30-2016, 06:57 PM   #9
Senior Member
 
CWSWine's Avatar
 
Join Date: May 2015
Posts: 1,010
Quote:
Originally Posted by wanderingbob View Post
I bought some of those 106 MPH tires , did not work , at about 77 MPH my wife started hitting me with her purse , blooded my nose . Tire dealer would not give me a refund !
Here is a "Service Description" location on your tire, plus a lot of other information.

Tire Tech Information - Sidewall Markings
__________________
2017 Fleetwood Discovery LXE 40D Diesel Pusher 41 foot. CC 5740
2017 Solitude 310GK-R Pick Up Oct 24th.
2016 GMC Denali 1 ton Cargo Capacity 3722 lbs
Sold 2016 Keystone Montana 3711FL
Sold - 2015 Crusader 315RST 5th Wheel -
2015 Ford F350 SRW Cargo Capacity 3744
CWSWine is offline   Reply With Quote
Old 03-30-2016, 07:15 PM   #10
Senior Member
 
Airdale's Avatar
 
Join Date: Jul 2013
Posts: 731
The load rating numbers in a service description are not the official load ratings for ST & LT tires. NHTSA allows the complete service description to be molded in the sidewalls of ST & LT tires for reference info only. Until new rules are made the Load Range lettering system is the only official load capacity for ST & LT tires.

An example of the difference can be found by looking up the service description load rating for a popular LT235/85R16E tire (3086#) and compare it to the load range letter on the tire (3042#).
__________________

__________________
A Trailer Tire Poster
http://www.irv2.com/photopost/showfull.php?photo=15139
Airdale is offline   Reply With Quote
Reply

Tags
tire, tires

Thread Tools
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



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:18 AM.