theoldwizard1
SE MI
Senior Member
Joined: 09/07/2010
View Profile
 Offline
|
Forget ST tires. Use LT tires. Many more brands and sizes to choose from.
Letter and ply rating are "old school" and should not be trusted. Use the actual weight rating on the sidewall. It will also tell you the correct pressure.
|
phillyg
SWFL
Senior Member
Joined: 04/24/2002
View Profile
Good Sam RV Club Member
Offline
|
It probably won't ride harder if you adjust your psi downwards, based on your actual weight, and using the tire mfgrs. load table. And, congrats on getting 5 years on Trailer Kings, most fail well before then.
--2005 Ford F350 Lariat Crewcab 6.0, 4x4, 3.73 rear
--2016 Montana 3711FL, 40'
--2014 Wildcat 327CK, 38' SOLD
|
Cummins12V98
on the road
Senior Member
Joined: 06/03/2012
View Profile
Offline
|
2112 wrote:I had Ds on my FW and kept them aired up to 65psi. I upgraded to Endurance Es and air then up to 68psi.
I tried then at 75psi and it was like the FW was riding on basketballs. Aired them down to 68 and now it rides smooth as glass.
The load chart was about 55psi for my weight
Nice seeing a Man using the brain God gave him.
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"
"HeavyWeight" B&W RVK3600
2016 MobileSuites 39TKSB3 highly "Elited" In the stable
2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD
|
Cummins12V98
on the road
Senior Member
Joined: 06/03/2012
View Profile
Offline
|
theoldwizard1 wrote:Forget ST tires. Use LT tires. Many more brands and sizes to choose from.
Letter and ply rating are "old school" and should not be trusted. Use the actual weight rating on the sidewall. It will also tell you the correct pressure.
Correct pressure for what???
|
theoldwizard1
SE MI
Senior Member
Joined: 09/07/2010
View Profile
Offline
|
Cummins12V98 wrote:theoldwizard1 wrote:Forget ST tires. Use LT tires. Many more brands and sizes to choose from.
Letter and ply rating are "old school" and should not be trusted. Use the actual weight rating on the sidewall. It will also tell you the correct pressure.
Correct pressure for what???
Correct pressure for the rated load.
|
|
|
CapriRacer
Somewhere in the US
Senior Member
Joined: 01/27/2012
View Profile
Offline
|
I see no one has mentioned that a Load Range E has the same load carrying capacity as a Load Range D when inflated to the same pressure. At the LR D pressure, a LR E performs the same - ride, sway, etc.
So you can buy a LR E and use it in place of a LR D.
* This post was
edited 06/15/22 04:24am by CapriRacer *
********************************************************************
CapriRacer
Visit my web site: www.BarrysTireTech.com
|
2112
Texas
Senior Member
Joined: 07/16/2011
View Profile
|
It was a pease of mind for me. One less thing to worry about.
CapriRacer wrote:I see no one has mentioned that a Load Range E has the same load carrying capacity as a Load Range D when inflated to the same pressure. At the LR D pressure, a LR E performs the same - ride, sway, etc.
So you can buy a LR E and use it in place of a LR D. Actually they have about 18% more capacity when inflated to the same pressure when comparing the 75R15(D) and 75R15(E).
Endurance Load Chart
I have 8400lbs across 4 tires. So according to the chart I should air them to 50psi. Even at 55psi they looked too low and would have too much sidewall flex. 68psi just looks and feels right to me. YMMV
* This post was
last
edited 06/15/22 07:36am by 2112 *
View edit history
2011 Ford F-150 EcoBoost SuperCab Max Tow, 2084# Payload, 11,300# Tow,
Timbrens, PullRite SuperGlide 2700 15K
2013 KZ Durango 2857
|
Cummins12V98
on the road
Senior Member
Joined: 06/03/2012
View Profile
Offline
|
theoldwizard1 wrote:Cummins12V98 wrote:theoldwizard1 wrote:Forget ST tires. Use LT tires. Many more brands and sizes to choose from.
Letter and ply rating are "old school" and should not be trusted. Use the actual weight rating on the sidewall. It will also tell you the correct pressure.
Correct pressure for what???
Correct pressure for the rated load.
Thought for a minute you were a fill it to MAX psi no matter what kinda guy.
|
Cummins12V98
on the road
Senior Member
Joined: 06/03/2012
View Profile
Offline
|
CapriRacer said: "I see no one has mentioned that a Load Range E has the same load carrying capacity as a Load Range D when inflated to the same pressure."
I kinda did say it in code: "but if close to the MAX rating buy the "E" and run them at the same pressure as the "D" tires required."
|
Cummins12V98
on the road
Senior Member
Joined: 06/03/2012
View Profile
Offline
|
2112 wrote:It was a pease of mind for me. One less thing to worry about.
CapriRacer wrote:I see no one has mentioned that a Load Range E has the same load carrying capacity as a Load Range D when inflated to the same pressure. At the LR D pressure, a LR E performs the same - ride, sway, etc.
So you can buy a LR E and use it in place of a LR D. Actually they have about 18% more capacity when inflated to the same pressure when comparing the 75R15(D) and 75R15(E).
Endurance Load Chart
I have 8400lbs across 4 tires. So according to the chart I should air them to 50psi. Even at 55psi they looked too low and would have too much sidewall flex. 68psi just looks and feels right to me. YMMV
My Endurance on my Boat Trailer "LOOK" low but the proof is in the pudding they are right on at 50psi as the tread is perfectly even at 20,000 miles.
|
|
|
