Jan-26-2014 06:50 PM
Jan-27-2014 07:32 AM
Jan-27-2014 06:51 AM
jadatis wrote:
To my opinion the LT here has only slighty more savety then the old ST of 235/80/16 .
Jan-27-2014 06:40 AM
Jan-27-2014 06:25 AM
jadatis wrote:
I am a bit confused now, you write
Tuesday, (1-28-14) I am putting on LTXMS2 Michelin tires all around, ST235/85R16. The load rating is a bit less than the ST tires, but well within spec. The size is slightly taller, but I should be OK. The load rating is 3042 @ 80 psi, with 5200 lbs axles on the trailer. That gives me some breathing room. But I also weighed the rig, the trailer rear axles weighed 8,240 lbs, while the hitch weight was an additional 1,860 lbs.
Are you saying that tuesday you will again put other tires on ST235/85R16 and those are others then the Michelin LTXMS2??
What you have try to determine is the maximum speed for wich the maximum load is calculated for. For that you have to read my topic I linked to in former reaction.
Jan-27-2014 06:20 AM
Jan-27-2014 06:14 AM
sloman2001 wrote:
I bought the Cougar with an option called the "Mountain Package" at the time. It came with a larger tire and some extra suspension. So while the specs say the tire size is ST225/75R15, it actually came with an ST235/80R16, LR E. The axles have not been de-rated, they are 5200 lbs per axle.
On our way to AZ this year, we had a severe tire blowout in New Mexico, and it did about $2,000 worth of damage to the rig. So now, I am trying to be smart and maybe be overly cautious. So I am going to the LT tires, and was just trying to make sure I am going to be OK with the extra pressure after travelling. I do have metal valve stems with the TST TPMS system.
Tuesday, (1-28-14) I am putting on LTXMS2 Michelin tires all around, ST235/85R16. The load rating is a bit less than the ST tires, but well within spec. The size is slightly taller, but I should be OK. The load rating is 3042 @ 80 psi, with 5200 lbs axles on the trailer. That gives me some breathing room. But I also weighed the rig, the trailer rear axles weighed 8,240 lbs, while the hitch weight was an additional 1,860 lbs.
I really want to thank you guys for all your help. Any other thoughts welcome.
Tom
Jan-27-2014 06:04 AM
Jan-27-2014 06:00 AM
Jan-27-2014 05:33 AM
sloman2001 wrote:
I am changing all my tires on out 5ver from STs to LTs. I have looked for an answer to my question but to no avail, so I will try here, you have all been helpful in the past.
I'm going to put 80lb psi in the tire per the RV recommendation. The max tire pressure is also 80lbs. I'm putting on Michelin LT235/85R16 size tires. They are load range E tires (3042 lbs. at 80 psi), I have 5200 lb. axles.
While driving, this pressure will increase to various levels depending on the ambient temperature as well as speed (we drive 55 mph).
So 2 questions,
1) What is an acceptable level of psi above the 80lbs, and
2) If the pressure exceeds that, do I merely stop and remove some air?
I do not want another tire failure.
I have a TPMS in place so I can monitor the pressure real time.
Thanks in advance. I'm learning the hard way.
Tom
Jan-27-2014 04:55 AM
Jan-27-2014 04:04 AM
So 2 questions,
1) What is an acceptable level of psi above the 80lbs, and
2) If the pressure exceeds that, do I merely stop and remove some air?
Jan-26-2014 11:35 PM
Jan-26-2014 08:45 PM
Jan-26-2014 08:35 PM
old guy wrote:
I asked the tire guys this just last week. they said put 75 in so when they get hot they will have a 5 psi to expand
Jan-26-2014 08:02 PM