I HAD To Buy New Tires
Whilst prepping the trailer for my trip to Northern Quebec this weekend, I noticed that all the valve stems on the rims were cracked. On further inspection....there were small cracks between the tire ...
Forum Discussion
RinconVTR wrote:
...And there is still no confirmed proof from Maxis their ST option is Q server/speed rated. Such information is only found on reseller web sites. It would be nice if someone could post an image of their sidewall to confirm the Q service code.
Also, an inaccurate statement posted on the chart. The ST "spec" per tire load/inflation charts and federal regulations does NOT override the manufacture.
The manufacture sets the speed rating of their product and what's on the side of the tire is the speed and max cold pressure rating. Period. No exceptions.
The Maxxis 'Q' designation in the table and the note about ST default speed rating were both taken from this email sent by Maxxis customer support. Here is Maxxis's answer...
Maxxis International – USA
July 27, 2016
Subject: Re:Trailer tire speed rating
To ensure your reply reaches the proper destination, do not modify or remove the subject line of this email.
The Maxxis M8008 ST Radial is "Q" speed rated. However, according to the Tire and Rim Association, the U.S. tire industry specification authority, inflation pressures and load specifications in general for any ST Radial trailer tires, without a service description, regardless of the manufacturer, are designed and rated at 65 MPH. If the speed is higher than 65 MPH, the pressure and load need to be adjusted according to the following guidelines:
From 66 to 75 MPH – the tire inflation pressure needs to increase 10 PSI (not to exceed the maximum PSI the tire is rated for) but requires no load adjustment.
From 76 to 85 MPH – the tire inflation pressure needs to increase 10 PSI (not to exceed the maximum PSI the tire is rated for) and load should be reduced by 10%.
We hope this information is helpful. Thanks for your inquiry and interest in Maxxis Tires.
Best Regards,
Your Maxxis Support Team
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Maxxis International – USA
Email: MaxxisSupport@maxxis.com | Web: maxxis.com
