Posted 2018-04-11 6:19 AM (#171506 - in reply to #171503) Subject: RE: Trailer Tires - what low range ?
Location: Pataskala, Ohio
First, I am not a tire expert, my cousin is and I follow his advice.
I have a Lakota 4 horse 10SW with 104 gallon fresh water and black and gray water at 33 each. The hardest thing I do to my trailer tires is a trip from Ohio to Colorado in the summer. Lots of heat and weight.
The advice I was given will anger some.
Never put ST trailer tires on a heavy trailer. Only use LT tires. I run Firestone HT Highway tires with low rolling resistance in LT285/75/16 I should have 235/75/16, I could not read my writing but they fit just fine and carry more weight. I run them at 80psi and check them with a laser temp gauge to ensure I am not running hot on a brake or tire and watch the pressure.
I have never had a failure but my tires are treated well at home, short trips to shows on good roads (for Ohio).
My advice: buy LT tires made in the US, Mexico, Canada, Western Europe, Japan or South Korea only. Me, I buy tires made in the US/Canada or Japan only.
Posted 2018-04-11 2:47 PM (#171509 - in reply to #171507) Subject: RE: Trailer Tires - what low range ?
I also will not put a ST tire on my horse or goose neck flatbed trailers. I had them on my flatbed and with only a 8,000# load in 30 miles the tread just rolled off 3 of them. The quality of ST tires is terriable because of very little liability to the company. They just don't fear the lawsuits from a blowout from a ST tire. Want to see their lawyer sweat. How about a Suburban with a soccar mom and 3 little girls that the 6 month old tire lets go and rolls it and kills 1 or 3 of the kids. Just who do you think the jury is going to side with. The LT tires have a whole bunch more of quality built into them for this reason.
I run Firestone LT HT 235/85R-16 on my trailers and they are 6 years old now and they look like they are new yet. I trust them at 6 years old more than I would a 6 month old ST tire.
Posted 2018-04-12 2:47 PM (#171515 - in reply to #171511) Subject: RE: Trailer Tires - what low range ?
ThreeCW - 2018-04-12 11:53 AM Your tire load range should meet or exceed your axle capacity since you don't want your tires to be the "weak link". Load range E (10 ply) tires typically have a 3042 lb load rating at 80 psi inflation pressure and are good for 6000 lb axles (i.e. 2 tires x 3042 lbs rating = 6084 lbs). Load range G (14 ply) tires typically have a 3750 lb load rating at 110 psi inflation pressure and are good for 7000 lb axles (i.e 2 tires x 3750 lbs rating = 7500 lbs) Our trailer is a 13 ft LQ x 8 ft wide x 3H x 26 ft on the floor with 2 x 7000 lb axles. We run Goodyear G614 RST Load Range G tires in LT235-85-R16 size and keep them inflated to 110 psi.
You should stipulate these are for LT tires. ST tires in the same sizes are rated differently.... I cannot tell you why, just that they are. And yes, like someone above, I've seen ST tires that were rated higher fail on a trailer. Replacing them with lesser rate LT tires took care of the issue. I too like LT tires on any trailer that is on the heavy side.
It is customary for the tires to be the weaker rating. If nothing else than a 7,000 axle is stouter, but you only need to 6,000# of "E" tires.
Posted 2018-04-12 9:51 PM (#171516 - in reply to #171515) Subject: RE: Trailer Tires - what low range ?
Location: Calgary, Canada
RTSmith - 2018-04-12 2:47 PM - "It is customary for the tires to be the weaker rating. If nothing else than a 7,000 axle is stouter, but you only need to 6,000# of "E" tires."
I believe that you might be need to review your trailer GVWR plate to better understand what your trailer tire requirements are. All GVWR plates include a host of information including the axle ratings and corresponding trailer tires requirements.
By way of example, I have attached GVWR nameplates from 5 different trailer manufacturers ... and all 5 have tire requirement where the load capacity of the tires meet or exceed the axle rating. I am thinking that manufacturers the likes of Hart, 4 Star, Wilson, Elite and Sooner are fairly experienced in equipping trailers with properly rated tires to meet the safety and legal requirement for hauling down the road.
You might be able to get away with a lighter tire compared to your axle rating IF (and only if) you have a lighter load (not sure of the legality of it though ??). With today's heavier LQ trailers and heavier loads (we typically take over 5000 lbs with us horse camping ... and that is only for 2 horses plus the extras), a trailer tire that meets or exceeds your axle capacity is a requirement (at least in my book).