TPS issues

[Slick02]

Looking at changing tires on my 08 F350 and was wondering how everone is getting around having TPS warning lights from coming on,,hell the truck came with 80 psi tires, and every time I try to drop the stock tires below 70 psi it kicks the light on. I wanted to go to 10" wheels and 325/60r20 tires(35 x 13.5) which everything I've looked at is 8 ply instead of 10 and has a max psi of 65.

[Pahrump]

Theres no way around it right now.

A couple guys said that they have put all the sensors in teh spare and aired it up to 80psi and its fine...I....look at the light all day.

[Rudy's diesel performance]

i think ford might be able to recalibrate them, for a fee of course...

[DSL_PWR]

Ford will not change this..

[Rudy's diesel performance]

i guess i was wrong then, or the ford dealership was. when i bought my truck, the TPS light was on. They said if it did not go away, they would recalibrate it for me. it went away after i put air in it seeing as they were running 40 psi in it.

[DSL_PWR]

Originally Posted by Rudy

i guess i was wrong then, or the ford dealership was. when i bought my truck, the TPS light was on. They said if it did not go away, they would recalibrate it for me. it went away after i put air in it seeing as they were running 40 psi in it.

Well then I will rephrase, the will not calibrate the TPS for tire pressures lower than the standard that was set, not sure what that is, but I did ask my dealership as well and they said no, they would not change it..

[Jcard]

Ford dealer in Rifle Colorado will hook you up.

[BigIslandBoy]

Originally Posted by Slick02

Looking at changing tires on my 08 F350 and was wondering how everone is getting around having TPS warning lights from coming on,,hell the truck came with 80 psi tires, and every time I try to drop the stock tires below 70 psi it kicks the light on. I wanted to go to 10" wheels and 325/60r20 tires(35 x 13.5) which everything I've looked at is 8 ply instead of 10 and has a max psi of 65.

I just mounted some 35/13.5/18 pro comp xtreme at's they are load E and I have them aired up to the 65lbs max and the light is on. I just did the tire retraining, the light is still on, but the manual said it could take up to 20 minutes of driving for it change? My installer would not let me mount all the sensors in the spare, soo I couldn't try to air that one up to 80 to see if that works.

[sporacer]

You can run 65 psi min in all 4 tires. Just need to retrain the sensors at the lowered pressure. This has been covered many times.

[Harley350]

I'm pretty sure installing sensors in the spare will not work. The sensors are activated and charged when in motion (wheels turn).

I run my tires at 65 PSI, if my rears go below 63 PSI then the light comes on. PITA if you ask me.