30 miles from our destination my TPMS indicated low pressure. Indeed it was. Had gone from 65psi this morning to 52 psi after 200 miles. Bought all four Goodyear Marathon ST225/75/R15 2 months ago. All codes indicate they were made in late 2015. I inflated back to 65psi and made it to the campground but it still lost 2 psi in that 30 miles. What to do with slow leaking tire. Can someone come and repair or is a new tire necessary. I have about 4 days before return trip. By the way we have traveled a total of 1800 miles the past two weeks.Thanks in advance for the advice.George

Can you roll the rig up onto one wheel and have the other in the air, then take off the bad tire and run it to the shop in the truck.Your Road Assistance will change the tire to the spare, but I doubt they can fix it right there. I would call them and ask though.

Were is the leak? I patched a TT tire and it was still good when we sold the TT 4 years later.

Probably a simple repair. But you will either need to take the trailer to a tire shop, or take the tire/wheel off and take it to a tire shop.

Check the air valve, first. Then, I'd suggest to dismount the wheel and check the tire for leaks in a water tub or using soap and spray. It sounds like a valve or bead leak to me. You may also have picked up some road trash like a screw or nail.

Repair or replace?? | Good Sam Community

boosTT
Explorer
Jun 01, 2016
Have someone remount it?
Artum_Snowbird
Explorer
Jun 01, 2016
Can you roll the rig up onto one wheel and have the other in the air, then take off the bad tire and run it to the shop in the truck.

Your Road Assistance will change the tire to the spare, but I doubt they can fix it right there. I would call them and ask though.
K_Charles
Explorer
Jun 01, 2016
Were is the leak? I patched a TT tire and it was still good when we sold the TT 4 years later.
BB_TX
Nomad
Jun 01, 2016
Probably a simple repair. But you will either need to take the trailer to a tire shop, or take the tire/wheel off and take it to a tire shop.
westend
Explorer
Jun 01, 2016
Check the air valve, first. Then, I'd suggest to dismount the wheel and check the tire for leaks in a water tub or using soap and spray. It sounds like a valve or bead leak to me. You may also have picked up some road trash like a screw or nail.
Tom_Barb
Explorer
Jun 01, 2016
Bryanpark2 wrote:
30 miles from our destination my TPMS indicated low pressure. Indeed it was. Had gone from 65psi this morning to 52 psi after 200 miles. Bought all four Goodyear Marathon ST225/75/R15 2 months ago. All codes indicate they were made in late 2015. I inflated back to 65psi and made it to the campground but it still lost 2 psi in that 30 miles. What to do with slow leaking tire. Can someone come and repair or is a new tire necessary. I have about 4 days before return trip. By the way we have traveled a total of 1800 miles the past two weeks.

Thanks in advance for the advice.

George
Are you certain it isn't the TPMS that is leaking?

Mix up some soapy water and spray the tire down and find the leak. Where it is leaking determines the repair.
newman_fulltime
Explorer II
Jun 01, 2016
My bet is on a bad valve stem
Huntindog
Explorer
Jun 01, 2016
I think the OP is concerned about what hidden internal damage the tire may have suffered when running under inflated.

This is a valid concern. Especially since ST tires do not have to pass an underinflation test like LT tires do.

I would replace the tire. If the tire has been damaged, a blowout can occur without warning. The resulting damage to the TT that can occur will likely be MANY times the cost of replacing the tire.
rbpru
Explorer II
Jun 01, 2016
I had a TT tire go flat, it was repaired like any other tire.
kaydeejay
Explorer
Jun 02, 2016
Tom/Barb wrote:
Are you certain it isn't the TPMS that is leaking?

Mix up some soapy water and spray the tire down and find the leak. Where it is leaking determines the repair.
I echo that! Much as I love my TST TPMS system it was the cause of two low tires.
One was a cracked valve stem caused by the weight of the sensor (fixed with metal stems), the other was a leaking gasket in the sensor to stem connection.
The good news is that the system did alert me before any damage was done!
It's worth a check!