"As to the 65 mph limit or rating for ST tires, the GY website provides inflation values for speeds up to 75 mph for their ST tires?? "
Look om the tire itself and see what they rate it at, the heck with the valve stems.
"This website represents only a fraction of the RV community. The majority of the rv's on the road have Chinese tires and NEVER have a problem. Some here are obsessed with badmouthing these tires."
I think you are missing the point of this and other sites, it is for information not bad mouthing! I have had no real trouble other than a flat tire once BUT when buying new tires for my trailer I enlisted the fine folks here and their OPINIONS! I did this because in order to make a good decision you get as much info and facts as you can,right?
I bought the Maxxis tires on this boards recommendation and will continue to seek their advise. If you don't want it why come?
2008 Silverado D/A,CC 4x4 ,3.73,IBC LTZ+
2012 Jayco 322 FKS
2 Trek bikes
Honda EU2000i
It must be time to go, the suns out and I've got a full tank of diesel! Lifes short enough without bitch'n about it!
In order to do the 75 mph, you have to increase the inflation pressure. But at the same time, you can't exceed the maximum inflation pressure on the sidewall. So the only way you can do this is if the tires came from the RV factory underloaded, and they specified a pressure lower than what is stated as the maximum on the sidewall of the tire. Typically, you are going to need a tire load rating such that the maximum GVWR only uses about 70% of the tire capacity. The norm in the industry is to use 95% or more.
So good luck with using Goodyear's chart for increasing speeds over 65 mph.
I know this may sound like a dumb question, is Maxxis the only truly reputable tire manufacture? Who else makes good ST tire? Also, and probably more important to me, who makes a tire that has a higher speed rating? 65mph is way too slow for my tastes, have been typically running at 80mph and had no clue that these trailer tires were not rated for this kind of speed.
Really don't want a blow, but really hate driving 65mph. Could live with 75mph if that is the best I can get, but would prefer a tire that has a 90mph+ rating, that way could run 80-85mph and not worry so much.
Quote: In order to do the 75 mph, you have to increase the inflation pressure. But at the same time, you can't exceed the maximum inflation pressure on the sidewall. So the only way you can do this is if the tires came from the RV factory underloaded, and they specified a pressure lower than what is stated as the maximum on the sidewall of the tire.
I have no interest in being argumentative so don't take this that way. However, I think that the load could also be lessened on each tire for a corresponding increase in speed above 65 mph up to 75 mph. For example if a tire has a rated load of 1800 pounds at max inflation pressure, lower the load on the tire for higher speeds perhaps as much as 10 percent or almost 200 pounds per tire for the higher speeds. I also am aware that a rating is not necessarily a limit. This was discussed on the Airstream forums at some length and at least one person said the rating is at rated speed (65 mph) with max load on the tire for 24 hours at 100 degrees F. That is the rating, not necessarily the limit. And I am not sure if that is true.
'05 Dodge Cummins 4x4 dually 3500 white quadcab auto long bed.
'09 299bhs Tango.
Lose a valve stem/core at 65 mph and you basically just lost the tire as well. By the time you get stopped most likely the tire is ruined. I went with metal replacement stems, was disappointed that my trailer (that supposedly is a higher end manufacturer) could not do something as simple and highly effective as using better valve stems.
This whole tire deal is starting to make me sick the more I read about it. My trailer is a single axle, so 2 tires. The trailer is at 3850lbs total. That means I would need a tire that is capable of 1925+20%(recommended safety factor)=2310lbs. I have been looking and it does not seem like a 2310lbs rated tire exists.
So not only can't get a tire that has the speed rating I want, can't even get a tire that is capable of carrying the potential load. Doh!
Thanks for the heads up jm, will certainly get metal stems once I figure this out.
Quote: Thanks for the heads up jm, will certainly get metal stems once I figure this out.
I agree, this tire stuff especially the 15 inch rim size tires is frustrating. Many manufacturers will only use axles and tires that are already at or near the max at GVWR and in some cases the tongue weight is deducted from that GVWR before specifying the axles and tires. For example, a trailer with a 7500 GVWR will likely have a tongue weight of 750 or more pounds so the manufacturer uses two 3500 pound axles for a total of 7000 pounds and four tires that can accommodate about 1800 pounds each, or just barely above the axle rating but under the GVWR for the trailer. There is almost no extra capacity. Then if you go to higher rated tires (if they fit in the wheel well and have the size spacing between tires on the axles) the rims might not have the pressure rating to go along with the higher rated pressures of the better tires. The real solution is to go with 16 inch rims as many different tires can be used. For most that have 15 inch rims, the Maxxis seem to be a good solution. If you live in Les Schwab terrority they sell a TowMax tire that they will stand behind with their warranty.
For a single axle trailer, I would think you could run just about any tire you want. You don't have to worry about tire scuffing from turns, and the sidewall doesn't have to be a stiff as a dual axle trailer. If it were me, and I wanted higher speed rated tires, I would just use a good passenger car or light truck tire that was rated for the weight I wanted to carry.
I, for sure though, would not be towing at the speeds you are talking about!
Barney
2004 Sunnybrook Titan 30FKS TT
Hensley "Arrow" 1400# hitch
2002 Ford F250 Super Duty, 7.3L PSD Visit our website here
TXDego wrote: This whole tire deal is starting to make me sick the more I read about it. My trailer is a single axle, so 2 tires. The trailer is at 3850lbs total. That means I would need a tire that is capable of 1925+20%(recommended safety factor)=2310lbs. I have been looking and it does not seem like a 2310lbs rated tire exists.
So not only can't get a tire that has the speed rating I want, can't even get a tire that is capable of carrying the potential load. Doh!
Thanks for the heads up jm, will certainly get metal stems once I figure this out.
What size are your tires? If you have 15" or room to move up to 15" you can go to LTs.
My TT is a Rugged Terrain and like many Toy Haulers that haul heavier loads and expected to use on rougher roads comes from the factory with LT tires.
Mine came with Chinese Merit LT, steel radials, 15" rated at 1985# each. That totals 7940# carrying capacity for my TT of 6000# GVWR. I keep the sunny side covered while at home. Nothing while camped. I do not use any tire dressings. I keep the pressure at the recommended max of 50 psi, cold. I take their temps with a temp gun at every rest stop. The only time I limit my speed to 65 is when double towing the boat trailer.
So far at 2 years old and about 2500 miles they look new. I don't know how many miles they travelled for delivery.
I do watch them like a hawk and at the first sign of trouble they will all be replaced with Toyo M 55 LT tires.
I think the best thing you can do for any tire is keep it covered, check the psi every morning when they are cool, watch teh temps and have a good safety cushion for load capacity. And save the Armor All for your dash board!!!
My factory tires.
2011 F250 Super Cab Lariat 6.2 373 FX4 Short Box 4" BDS, 35" Toyos, TorkLift, 16.5K Warn, Locked & Loaded
2007 SunLite Pop Up
My 2010 Jayco Eagle came with Chinese made Goodyears. When I picked up the trailer, I didn't realize that Goodyear made tires in China. The tires' capacity was well under the TT's GVWR. I replaced all 5 with Maxxis, up one size. Wiser now to the ways of the industry.
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