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Old 02-17-2015, 09:36 PM   #11
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I finally made it out to the storage lot to check the sidewalls on my Wildcat trailer tires for a speed rating but I couldn't find anything on the tire sidewall regarding a speed rating...only tire size and load capacity. Am I missing something or is it legal to omit the speed rating on a trailer tire?

I sent an inquiry to Taskmaster to see if I can get confirmation of the information (speed rating M = up to 81 mph) posted on their web site.
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Old 02-18-2015, 11:40 AM   #12
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Quote:
Originally Posted by Lefty59 View Post
I finally made it out to the storage lot to check the sidewalls on my Wildcat trailer tires for a speed rating but I couldn't find anything on the tire sidewall regarding a speed rating...only tire size and load capacity. Am I missing something or is it legal to omit the speed rating on a trailer tire?

I sent an inquiry to Taskmaster to see if I can get confirmation of the information (speed rating M = up to 81 mph) posted on their web site.
If there is no speed ratings found on the tire, certification label/tire placard or in the trailer's owner's manual the TRA says ST tires are rated at 65 MPH.

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Old 02-18-2015, 12:09 PM   #13
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Quote:
Originally Posted by Lefty59 View Post
I finally made it out to the storage lot to check the sidewalls on my Wildcat trailer tires for a speed rating but I couldn't find anything on the tire sidewall regarding a speed rating...only tire size and load capacity. Am I missing something or is it legal to omit the speed rating on a trailer tire?

I sent an inquiry to Taskmaster to see if I can get confirmation of the information (speed rating M = up to 81 mph) posted on their web site.
If your tires are ST type i.e. the size description starts with ST Like ST215/70R15 LR-C then they have a max speed rating of 65 mph as all ST tires do.

If they were LT then there may be a "Service Description" such as 111/120/T which would be a T speed rating but most if not all tire companies have a 75 mph max speed rating for RV application even if the tire is rated higher for car or truck application.
This post may help.
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Old 02-18-2015, 12:42 PM   #14
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On Taskmasters sight the PROVIDER ST RADIAL has a speed rating of M (81 mph) in some sizes and the tire description starts with ST.
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Old 02-18-2015, 01:36 PM   #15
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On Taskmasters sight the PROVIDER ST RADIAL has a speed rating of M (81 mph) in some sizes and the tire description starts with ST.
That's the same info (speed rating M) I found on their web site for my ST235/80R16 tires.

I'm not sure why they would post inaccurate or misleading info on their web site for all to see as the liability for doing so would likely be undeniable. I do wish the tire sidewall had the speed rating stamped on it though so that a person could be certain one way or the other.

I'm hoping they will answer my inquiry...but so far we haven't heard anything back.
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Old 02-18-2015, 02:03 PM   #16
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Maxxis speed rating

I emailed Maxxis a couple of months ago and asked them why they were calling the tires on my new Wildcat (optional tire) "high speed tires" when all ST tires are speed rated for 65 mph. The response (which I cannot find right now) was something like the tires are actually R rated, but they do not recommend towing above 65 mph. I guess that makes some sense. At least it alleviated my concerns about an occasional "burst" of speed to get around someone or to get a head start on the next hill or worse yet daydreaming for ten miles of freeway.

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Old 02-18-2015, 02:12 PM   #17
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Screen Capture

Here's a screen capture (if this works) from the Taskmaster web site:
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Name:	Taskmaster Provider.jpg
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Old 02-18-2015, 05:59 PM   #18
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- Looks like Taskmaster may not be consistent with their ratings. Their site has M (81), R(106), J(62) & L(75)
- This site shows N/A for speed rating.
- So does This site.
- This site shows N(87) speed rating for 16" but Taskmaster says the 16" tires are rated either M or L
- TireRack has a nice page explaining Speed Ratings for all except ST type tires. N=87 M=81
- TireRack on ST speed rating "Industry standards dictate tires with the ST designation are speed rated to 65 MPH (104 km/h) under normal inflation and load conditions. "

I have contacted both Discount Tire and Taskmaster and asked why they show different information.
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Old 02-18-2015, 06:26 PM   #19
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Here's something that I should not post on this thread (hope this isn't a hi-jack offence). Probably have a couple thugs show up and brake my knee caps, but what the heck here goes...I've asked the question below several time, but just get the run around...
The factory has "C" rated tires on my tt and I've been told to run max 50 PSI in them. In the near future I will be replacing them. I would like to buy MAXXIS, but MAXXIS does not make "C" rated tires in ST225/75R15 just in "D" rated. Why can't I run "D"'s at 50 PSI and it be no different than my existing "C"s? Looks like 8 plys would be a lot safer/better than 6 plys. I monitor temp and psi all the time with my tireminders. When the weather gets better I will be hitting the CAT scales and find out my exact weight.
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Old 02-18-2015, 07:15 PM   #20
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Can't see any reason for not replacing C' with D's. Should have a higher load rating too.

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