OT - Trailer Tires - Sumitomo ST727
12-02-2013, 08:41 PM
#1
Safety Car
Thread Starter
OT - Trailer Tires - Sumitomo ST727
I'm interested in these, in the 215/17.5 size, for the healthy bump in load capacity over my GY G614 16" tires.
Anyone have any experience with these?
Thanks.
Anyone have any experience with these?
Thanks.
12-03-2013, 08:57 AM
#2
Safety Car
Member Since: Nov 2000
Location: Shenandoah Valley Virginia
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Can't comment on those tires in particular. Be sure to get at least a "D" rating on the tire or even an "E" if available. If you are looking to dramatically increase the carrying capacity of the trailer, the standard "C" light duty trailer ratings are not going to cut it.
12-03-2013, 01:57 PM
#4
Drifting
Member Since: Dec 2005
Location: Dayton, OH
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Especially these guys that blow by you towing at 80+mph
12-03-2013, 08:46 PM
#6
OOPS Happened to me at the PA/NY border, $350 for a tire because I forgot a spare at home.
12-04-2013, 11:40 PM
#7
1st of all...not OT in this section
I carry two spare with me b/c trailer tires suck. ST tires are rated for 65 MPH...here are some things to considered regarding trailer tires.
Trailer Tire Applications
•Trailer tires are designed for use on trailer axle positions only. They are not built to handle the loads applied to, or the traction required by, drive or steering axles.
Inflation
•Always inflate trailer tires to the maximum inflation indicated on the sidewall.
•Check inflation when the tires are cool and have not been exposed to the sun.
•If the tires are hot to the touch from operation, add three psi to the max inflation.
•Underinflation is the number one cause of trailer tire failure.
Load Carrying Capacity
•All tires must be identical in size for the tires to properly manage the weight of the trailer.
•The combined capacity of the tires must equal or exceed the Gross Vehicle Weight (GVW) of the axle.
•The combined capacity of all of the tires should exceed the loaded trailer weight by 20 percent.
•If the actual weight is not available, use the trailer GVW. If a tire fails on a tandem axle trailer, you should replace both tires on that side. The remaining tire is likely to have been subjected to excessive loading.
•If the tires are replaced with tires of larger diameter, the tongue height may need to be adjusted to maintain proper weight distribution.
Speed
•All "ST" tires have a maximum speed rating of 65 mph.
•As heat builds up, the tire's structure starts to disintegrate and weaken.
•The load carrying capacity gradually decreases as the heat and stresses generated by higher speed increases.
Time
•Time and the elements weaken a trailer tire.
•In approximately three years, roughly one-third of the tire's strength is gone.
•Three to five years is the projected life of a normal trailer tire.
•It is suggested that trailer tires be replaced after three to four years of service regardless of tread depth or tire appearance.
Mileage
•Trailer tires are not designed to wear out.
•The life of a trailer tire is limited by time and duty cycles.
•The mileage expectation of a trailer tire is 5,000 to 12,000 miles.
Why Use An "ST" Tire
•"ST" tires feature materials and construction to meet the higher load requirements and demands of trailering.
•The polyester cords are bigger than they would be for a comparable "P" or "LT" tire.
•The steel cords have a larger diameter and greater tensile strength to meet the additional load requirements.
•"ST" tire rubber compounds contain more chemicals to resist weather and ozone cracking.
Storage
•The ideal storage for trailer tires is in a cool, dark garage at maximum inflation.
•Use tire covers to protect the tires from direct sunlight.
•Use thin plywood sections between the tire and the pavement.
•For long term storage, put the trailer on blocks to take the weight off the tires. Then lower the air pressure and cover the tires to protect them from direct sunlight.
Maintenance
•Clean the tires using mild soap and water.
•Do not use tire-care products containing alcohol or petroleum distillates.
•Inspect the tires for any cuts, snags, bulges or punctures.
•Check the inflation before towing and again before the return trip.
Keys to Avoiding Trouble
•Make sure your rig is equipped with the proper tires.
•Maintain the tires meticulously.
•Replace trailer tires every three to five years, whether they look like they're worn out or not.
I carry two spare with me b/c trailer tires suck. ST tires are rated for 65 MPH...here are some things to considered regarding trailer tires.
Trailer Tire Applications
•Trailer tires are designed for use on trailer axle positions only. They are not built to handle the loads applied to, or the traction required by, drive or steering axles.
Inflation
•Always inflate trailer tires to the maximum inflation indicated on the sidewall.
•Check inflation when the tires are cool and have not been exposed to the sun.
•If the tires are hot to the touch from operation, add three psi to the max inflation.
•Underinflation is the number one cause of trailer tire failure.
Load Carrying Capacity
•All tires must be identical in size for the tires to properly manage the weight of the trailer.
•The combined capacity of the tires must equal or exceed the Gross Vehicle Weight (GVW) of the axle.
•The combined capacity of all of the tires should exceed the loaded trailer weight by 20 percent.
•If the actual weight is not available, use the trailer GVW. If a tire fails on a tandem axle trailer, you should replace both tires on that side. The remaining tire is likely to have been subjected to excessive loading.
•If the tires are replaced with tires of larger diameter, the tongue height may need to be adjusted to maintain proper weight distribution.
Speed
•All "ST" tires have a maximum speed rating of 65 mph.
•As heat builds up, the tire's structure starts to disintegrate and weaken.
•The load carrying capacity gradually decreases as the heat and stresses generated by higher speed increases.
Time
•Time and the elements weaken a trailer tire.
•In approximately three years, roughly one-third of the tire's strength is gone.
•Three to five years is the projected life of a normal trailer tire.
•It is suggested that trailer tires be replaced after three to four years of service regardless of tread depth or tire appearance.
Mileage
•Trailer tires are not designed to wear out.
•The life of a trailer tire is limited by time and duty cycles.
•The mileage expectation of a trailer tire is 5,000 to 12,000 miles.
Why Use An "ST" Tire
•"ST" tires feature materials and construction to meet the higher load requirements and demands of trailering.
•The polyester cords are bigger than they would be for a comparable "P" or "LT" tire.
•The steel cords have a larger diameter and greater tensile strength to meet the additional load requirements.
•"ST" tire rubber compounds contain more chemicals to resist weather and ozone cracking.
Storage
•The ideal storage for trailer tires is in a cool, dark garage at maximum inflation.
•Use tire covers to protect the tires from direct sunlight.
•Use thin plywood sections between the tire and the pavement.
•For long term storage, put the trailer on blocks to take the weight off the tires. Then lower the air pressure and cover the tires to protect them from direct sunlight.
Maintenance
•Clean the tires using mild soap and water.
•Do not use tire-care products containing alcohol or petroleum distillates.
•Inspect the tires for any cuts, snags, bulges or punctures.
•Check the inflation before towing and again before the return trip.
Keys to Avoiding Trouble
•Make sure your rig is equipped with the proper tires.
•Maintain the tires meticulously.
•Replace trailer tires every three to five years, whether they look like they're worn out or not.
12-04-2013, 11:49 PM
#8
Safety Car
Thread Starter
I am not sure if these are indeed "ST" class tires. Might just be in the name.
They are considered "medium truck" tires by Sumi, load rating H, 16 ply, max speed is 75mph.
Here is the link: http://www.sumitomotire.com/commerci.../st/st727.aspx
They are considered "medium truck" tires by Sumi, load rating H, 16 ply, max speed is 75mph.
Here is the link: http://www.sumitomotire.com/commerci.../st/st727.aspx
12-05-2013, 11:15 AM
#9
Safety Car
Great information. Are there special requirements for tires on the tow vehicle? I just purchased my first trailer and have a lot to learn. The tires on my tow vehicle look fine, but are about five years old... i am thinking that i should replace them.
12-05-2013, 11:35 AM
#10
Safety Car
Thread Starter
I have read that you should replace tires every five years even if the tread is fine.
The tire requirements depend on the load and what is available in the available for your application (taking into account tire, wheel and hub size).
The tire requirements depend on the load and what is available in the available for your application (taking into account tire, wheel and hub size).
12-05-2013, 10:01 PM
#11
Pro
Learned a lot from this thread. First point, I need to stop driving 70+ mph. Can't say it was often, but on some of those long trips surrounded by trucks, I was still the slow guy.
Replace at 10 k miles? That is about every year for me. Ugh
Replace at 10 k miles? That is about every year for me. Ugh
12-05-2013, 10:06 PM
#12
Safety Car
Thread Starter
I'd add to this list that people should consider getting a TPMS system. I have a Truck System Technologies setup. Worked well on a long (43') trailer. Kind of want one for my race car now.
12-06-2013, 04:46 PM
#13
Drifting
When did you get so smart
1st of all...not OT in this section
I carry two spare with me b/c trailer tires suck. ST tires are rated for 65 MPH...here are some things to considered regarding trailer tires.
Trailer Tire Applications
•Trailer tires are designed for use on trailer axle positions only. They are not built to handle the loads applied to, or the traction required by, drive or steering axles.
Inflation
•Always inflate trailer tires to the maximum inflation indicated on the sidewall.
•Check inflation when the tires are cool and have not been exposed to the sun.
•If the tires are hot to the touch from operation, add three psi to the max inflation.
•Underinflation is the number one cause of trailer tire failure.
Load Carrying Capacity
•All tires must be identical in size for the tires to properly manage the weight of the trailer.
•The combined capacity of the tires must equal or exceed the Gross Vehicle Weight (GVW) of the axle.
•The combined capacity of all of the tires should exceed the loaded trailer weight by 20 percent.
•If the actual weight is not available, use the trailer GVW. If a tire fails on a tandem axle trailer, you should replace both tires on that side. The remaining tire is likely to have been subjected to excessive loading.
•If the tires are replaced with tires of larger diameter, the tongue height may need to be adjusted to maintain proper weight distribution.
Speed
•All "ST" tires have a maximum speed rating of 65 mph.
•As heat builds up, the tire's structure starts to disintegrate and weaken.
•The load carrying capacity gradually decreases as the heat and stresses generated by higher speed increases.
Time
•Time and the elements weaken a trailer tire.
•In approximately three years, roughly one-third of the tire's strength is gone.
•Three to five years is the projected life of a normal trailer tire.
•It is suggested that trailer tires be replaced after three to four years of service regardless of tread depth or tire appearance.
Mileage
•Trailer tires are not designed to wear out.
•The life of a trailer tire is limited by time and duty cycles.
•The mileage expectation of a trailer tire is 5,000 to 12,000 miles.
Why Use An "ST" Tire
•"ST" tires feature materials and construction to meet the higher load requirements and demands of trailering.
•The polyester cords are bigger than they would be for a comparable "P" or "LT" tire.
•The steel cords have a larger diameter and greater tensile strength to meet the additional load requirements.
•"ST" tire rubber compounds contain more chemicals to resist weather and ozone cracking.
Storage
•The ideal storage for trailer tires is in a cool, dark garage at maximum inflation.
•Use tire covers to protect the tires from direct sunlight.
•Use thin plywood sections between the tire and the pavement.
•For long term storage, put the trailer on blocks to take the weight off the tires. Then lower the air pressure and cover the tires to protect them from direct sunlight.
Maintenance
•Clean the tires using mild soap and water.
•Do not use tire-care products containing alcohol or petroleum distillates.
•Inspect the tires for any cuts, snags, bulges or punctures.
•Check the inflation before towing and again before the return trip.
Keys to Avoiding Trouble
•Make sure your rig is equipped with the proper tires.
•Maintain the tires meticulously.
•Replace trailer tires every three to five years, whether they look like they're worn out or not.
I carry two spare with me b/c trailer tires suck. ST tires are rated for 65 MPH...here are some things to considered regarding trailer tires.
Trailer Tire Applications
•Trailer tires are designed for use on trailer axle positions only. They are not built to handle the loads applied to, or the traction required by, drive or steering axles.
Inflation
•Always inflate trailer tires to the maximum inflation indicated on the sidewall.
•Check inflation when the tires are cool and have not been exposed to the sun.
•If the tires are hot to the touch from operation, add three psi to the max inflation.
•Underinflation is the number one cause of trailer tire failure.
Load Carrying Capacity
•All tires must be identical in size for the tires to properly manage the weight of the trailer.
•The combined capacity of the tires must equal or exceed the Gross Vehicle Weight (GVW) of the axle.
•The combined capacity of all of the tires should exceed the loaded trailer weight by 20 percent.
•If the actual weight is not available, use the trailer GVW. If a tire fails on a tandem axle trailer, you should replace both tires on that side. The remaining tire is likely to have been subjected to excessive loading.
•If the tires are replaced with tires of larger diameter, the tongue height may need to be adjusted to maintain proper weight distribution.
Speed
•All "ST" tires have a maximum speed rating of 65 mph.
•As heat builds up, the tire's structure starts to disintegrate and weaken.
•The load carrying capacity gradually decreases as the heat and stresses generated by higher speed increases.
Time
•Time and the elements weaken a trailer tire.
•In approximately three years, roughly one-third of the tire's strength is gone.
•Three to five years is the projected life of a normal trailer tire.
•It is suggested that trailer tires be replaced after three to four years of service regardless of tread depth or tire appearance.
Mileage
•Trailer tires are not designed to wear out.
•The life of a trailer tire is limited by time and duty cycles.
•The mileage expectation of a trailer tire is 5,000 to 12,000 miles.
Why Use An "ST" Tire
•"ST" tires feature materials and construction to meet the higher load requirements and demands of trailering.
•The polyester cords are bigger than they would be for a comparable "P" or "LT" tire.
•The steel cords have a larger diameter and greater tensile strength to meet the additional load requirements.
•"ST" tire rubber compounds contain more chemicals to resist weather and ozone cracking.
Storage
•The ideal storage for trailer tires is in a cool, dark garage at maximum inflation.
•Use tire covers to protect the tires from direct sunlight.
•Use thin plywood sections between the tire and the pavement.
•For long term storage, put the trailer on blocks to take the weight off the tires. Then lower the air pressure and cover the tires to protect them from direct sunlight.
Maintenance
•Clean the tires using mild soap and water.
•Do not use tire-care products containing alcohol or petroleum distillates.
•Inspect the tires for any cuts, snags, bulges or punctures.
•Check the inflation before towing and again before the return trip.
Keys to Avoiding Trouble
•Make sure your rig is equipped with the proper tires.
•Maintain the tires meticulously.
•Replace trailer tires every three to five years, whether they look like they're worn out or not.
12-10-2013, 12:22 PM
#14
Racer
After getting caught out with a flat north of Atlanta last year, I've budgeted to replace all four trailer tires after two years. I don't care what brand of trailer tire you run on, the sun, weather and lack of use dry rot them quickly. Call it a peace of mind expense.
Feff
Feff
12-11-2013, 01:10 PM
#16
Safety Car
Wish I knew this before I trashed my first set of trailer tires. This thread will be a good resource for when someone searches in the future.
12-13-2013, 03:19 PM
#17
Tech Contributor
Member Since: Oct 1999
Location: Charlotte, NC (formerly Endicott, NY)
Posts: 40,078
Received 8,915 Likes
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5,326 Posts
I guess I must be different. For the drive from upstate NY to the Charlotte area I decided to change my trailer tires. The old ones were close to 10 years old and one of them was below 2/32 of tread. The spare which I had been using on the trailer for 2 or 3 years was well over 10 years old (replaced a worn out tire). They all seemed to be in good shape except for the one with no tread. Maybe keeping the trailer in a shed most of the time helped keep the environmental damage down. The only time it saw daylight was when I went to track or autocross events.
The new tires were all radials and they seemed to make it easier to pull the trailer and they seemed to do well on the trip. Speeds on the road were the in the 65 range most of the time with some bursts to 70+. Checked tires at each rest stop and they were all running cool to the touch. At the new home the trailer will be stored outside in the sun so I have purchased tire protectors for all 5 tires.
Bill
The new tires were all radials and they seemed to make it easier to pull the trailer and they seemed to do well on the trip. Speeds on the road were the in the 65 range most of the time with some bursts to 70+. Checked tires at each rest stop and they were all running cool to the touch. At the new home the trailer will be stored outside in the sun so I have purchased tire protectors for all 5 tires.
Bill
