The truck I recently bought has Nitto A/T Terra Grappler G2 295/65/20 E-rated tires. They look fairly new, so I plan on running them for a while. Does anyone have experience with these? Is this a size that some of y'all are running? I was getting the "low tire pressure" message, so I checked them. Three were at 55 and one was at 50. Tires show 80psi max, so I filled them all to 78-80psi. Opinions on psi with these? Also, my driver's side is rubbing the sway bar, which I assume would be normal for tires of this size, but I want to confirm that? Or is my sway bar slid too far to this side?

 

The sway bar may be off-center, but it going to sit where it wants to. The wheel offset is why that tire size is rubbing. I would just live with it.
running 75-80 psi will keep the tire pressure warning away, but is high unloaded, imo. I suggest 65 front 55 rear for a better ride. 80 will cause the middle of the thread to wear quicker.

 

I'll adjust the pressure. Thanks for the tip. Also, is there a way to adjust the tire pressure monitor's limit? I assume I can't do it per tire (65 for front, 55 for back).

 

Ford 'can' change TPMS setpoints, but I haven't found a dealer that 'will'. They will likely tell you they 'can't'. Good luck.

 

Just run 65 psi all the way around. I had the Toyo 295/65R20s and I still got over 55000 miles running them at those pressures. Anything below 62 psi will trigger the TPMS.

80 psi is pretty stiff in that tire. Which is OK if you are loaded. But will bounce you around on a rough road when unloaded.

I ran that size on 20x9" with -12 offset and never had any rubbing, So it's more a matter of the stock wheel offset causing the rubbing

 

I have a leveling kit on mine and I'm running 295 65-20 Toyo at2 extreme they recommend the 80 psi what do you have yours at or unloaded?

 

You can easily lower your own TPMS pressure alarm threshold with the free Forscan program and an an OBD2 adapter. Read the Forscan thread for the details. Many dealers won't do it for liability reasons. I lowered my rears from 80 to 60 on both my last and current SD so I can run lower pressure in the off towing season for a better ride and better tire wear.

As to the Terra Grappler G2, they are an awesome AT tire. I've run them in the past with excellent results. They wear like iron.

 

I've been using the Forscan app on my iphone and ipad, but haven't downloaded it to my computer yet. I assume I'll need to use my computer if I want to adjust the TPMS threshold, right? Good to know that these tires will last a while. I've never bought tires for 20's, but I know they're a whole lot more than the 16's I'm use to. So, 65psi all the way around, and I'll get an alarm if they drop to 62, correct?

 

Our local dealer dropped my tpms to 50 psi and activated the dpf screen at the same time.

 

Yes, you need the full Windows version to make changes. The app only allows you to monitor. Not sure what the trigger is but yes, set to 65 and it will go off at a certain point below that.

 

Mine did it for me on my 12 but refused on my 17. I'm sure if I said I wouldn't take delivery, they would have budged but I knew I could just do it when I got home with Forscan so I didn't push. They did enable my DPF screen on my 17 which you can't do with Forscan like you can with the 11-16.

 

69cj, where is your local dealer? I'm trying to get my dpf screen activated too. All the Ford dealers around here are acting like I'm crazy for suggesting it. Say they've never heard of it. Aggravating!

 

I ran them at 65psi unless I had heavy load of horses hooked up. If I just had one or two horses in the trailer, I left the tires at 65 psi vs having to air up and air down every time I hooked up the trailer.

I have not changed the TPMS, So anything less than 62 psi and my TPMS warning light would come on.

I got new tires at 53,000 miles and my Toyo A/T2s stillhave 5/32 of tread left. So I could have gone another 5-8,000 miles, But winter was coming and hunting season was a few weeks away, So I put some of my nephews Mud Tires on for this next 50,000 miles

 

Perhaps a better idea would be to borrow one of your nephew's mud TRUCKS.

 

Yeah, Well my horse trailer doesn't hook up very well to his trucks. I'd be dragging my trailers back end all the way.

And when I borrow his trailers and pull them with my truck, I can't get the landing gear up off the ground, His trailers are all built to be hooked up to his monster trucks