Does anyone know what the correct tire pressure should be for the 265-60-18 tires? I thought it was 35 psi but my TPMS light is on.

 

Are these OE tires and are you using the pressure on the door sticker? What is the load range of the tire? 35 is the the pressure you would use if these were P series tires. Also did you just replace tires? If so what came off the vehicle, and if you replaced wheels also, did you move the sensors to the new wheels?

 

My truck is an 07 XLT. It came with 17" steel wheels with 235-70-17 tires. I bought some new take off Lariat wheels that are 18" X 7-1/2". I put on Yokohama Geolander HTS G052 tires that are 265-60-18. I didn't even know the truck had the TPMS. I put 35 psi in each new tire and the light came on. I think the new rims don't have the sensors on them. Is it just a matter of putting the correct sensor on for 35 psi?

 

Those are extra load P series, so 35-38 psi should be okay. If those are new wheels, and the sensors were not moved over to the new wheel, then that is why the light is on, not tire pressure. If you have the old tire/wheels, then they can be moved over to the new wheels. You will probably have either new straps of mount them as described in this thread.

 

So the sensors are tuned to a specific air pressure? Or the truck is looking for a specific air pressure. The stock tires were 38 psi but the new tires are 35 psi. So if I put the sensors from the original rims on will I have to run them at 38 psi? Or can I get new sensors for 35 psi and put them on the new rims? The truck rides really nice with the tires at 35 psi.

 

No, they are set for a minimum pressure. They would not set the TPMS until you hit the low pressure.
Take a look here, about a quarter of the way down. There is a table of what the sensors are set for depending upon what tire came with your vehicle originally. I am not sure how adjustable the system is and whether it is a setting upon the sensor itself or within the computer.

 

So the sensors I have from my stock tires will work. It looks like from the article that they only give you a warning if they hit 20 psi. So my light is on because there is are sensors on any of the rims. And you have to have all four? This might not be so bad. I can pop them off the old rims and just get new straps from the dealer and be on my way.

And easy solution is to do nothing and try to ignore the light.

Yeah, right....(lol)

 

Don't feel bad, I have 2 sets of tires. One for summer and one for winter. I still have to figure out what I am going to do.

 

I was at the dealer today. This dumb blonde at the service desk tells me that they have to put the sensors on at the factory and that I can't put any sensors on the wheels I bought. So I went to the parts department and the guy tells me hat you can buy the parts, then he asks one of the mechanics and he says you can put them on the rims. So I booked an appointment to put the sensors from my old wheels put on my new wheels. I have to buy new straps. I wish they had made it more obvious that the truck has these stupid things. What a pain. They must be trying to get people to only buy ford accessories.

 

Mandated by the Gov't for 07 and up. Ford doesn't have much choice.

 

Yes, Thanks for the link to the article. I just wish I had realized before I mounted my tires. Now I have to take them off, put the sensors on and have them mounted and balanced again.