From what I have gathered in talking to tire professionals in the past regarding speed ratings on trailer tires, an ST (special trailer) tire has a 65 mph speed rating, period. Goodyear offers an STR version of their Marathon which is rated to 75 mph, as I recall. (other manufacturers probably also offer a higher speed rating)
An LT is a 'Light Truck' tire which is not recommended for trailer use but can be used for lighter trailers due to the stiffer sidewalls. I only use Goodyear Marathon's on my boat trailers, this is based on what I've read about the quality and performance of most other brands on the market. I hear a lot of people mentioning multiple blowouts on their tandem trailers when towing their 300's around. It's important to understand that when a tire blows because it's been broken down by excessive heat caused by under-inflation or sustained high speed (abuse) etc. that the other tires likely are breaking down equally and will also fail. If you blow a tire on a tandem, you really should replace at least the other tire on that same side because it probably sustained damage when the additional load was applied to it alone. Ryan Hill Date: Wed, 12 Mar 2014 16:23:24 -0500 From: millserAT@xxxxxxxxxxxxx To: ryan_hillc300@xxxxxxxxxxx Subject: Re: [Chrysler300] Trailer Size? My mistake the original post said 65 mph for ST tires not 60 mph - If thats a real limit on the safe speed for ST tires, in my experience, I doubt that many people towing trailers respect that limit. Around here on the Interstate, 75 is more the norm with a trailer - 65 would get you run over by the 18-wheelers. On 3/12/2014 4:14 PM, Edward Mills Antique Tractors wrote:
I'll have to go check my trailer tires tomorrow but I'll bet you that my trailer tires do NOT have a speed rating - I'm pretty sure the table you have found applies to Passenger Tires or maybe Passenger and Light Truck - the only question is whether there is a designation marked on ST trailer tires where us stupid people can find it. If it is in fact 60 mph what letter would that be? I, J, K? As for the manual - when is the last time you got a manual with a trailer? I've bought 2 new trailers and neither had any paperwork other than the registration. To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang __,_._,___ |