New Falken AT tire (A/T3W)

[4creeper]

...Anyone care to share their air pressures? Or a good way to come across the proper PSI?

Okay, so I just went down the rabbit hole of "T.R.A. Load Inflation Tables". Toyo Tires has an amazing PDF document that teaches you how to compare apples to oranges, selecting tire pressures of different tire sizes, based on the load rating at specific PSI. There are standard values for moving from P to LT, and if vehicles are using P metric tires on LT vehicles such as "SUV, Pickups, Minivans".
Here's the link:
Find the Correct Tire Inflation Pressure | Toyo Tires

Anyways, based on what I read for my specific application, to match the load rating of my stock tires (P265/70r17) I'm going to increase my pressure by 8 or 9 PSI from where I am at now, and keep an eye out for uneven wear.

P.S. Use at your own risk!

 

[4creeper]

Most P-rated tires are run at 32-psi. At 32-psi LT rated tires are underinflated, that's why it feels sluggish. I'd go up to 38-42 psi and see how it feels.

If I only would have waited, the answer would have presented itself! Thanks internet stranger!

 

[4creeper]

Went from 29psi (thx America's Tire) to 40. It's a night and day difference. Actually fun to drive again.

 

[5thToy]

Okay, so I just went down the rabbit hole of "T.R.A. Load Inflation Tables". Toyo Tires has an amazing PDF document that teaches you how to compare apples to oranges, selecting tire pressures of different tire sizes, based on the load rating at specific PSI. There are standard values for moving from P to LT, and if vehicles are using P metric tires on LT vehicles such as "SUV, Pickups, Minivans".
Here's the link:
Find the Correct Tire Inflation Pressure | Toyo Tires

Anyways, based on what I read for my specific application, to match the load rating of my stock tires (P265/70r17) I'm going to increase my pressure by 8 or 9 PSI from where I am at now, and keep an eye out for uneven wear.

P.S. Use at your own risk!

I've spent some time down that rabbit hole as well. For matching load ratings, this is all very helpful. One thing that I haven't seen mentioned though is the variance between OEM tire load ratings on different T4R trims. For example, the SR5s come with a 113 load rating, while the stock tires on the Limited are load rate 107.

This difference suggests to me that there is enough safety margin built in to where I don't need to focus so much on matching pressure/load rating exactly (unless actually using maximum load) as adjusting for even wear.

 

[Decipher]

I’ll save a ton of time for everyone. After hours of reading, the consensus is on 275 and 285 LTs (regardless of load rating) 36-40 psi is most common. I ran mine in the 38 range and was perfectly content with both ride quality and contact patch testing using a chalk line.

For SL (including my currently 285 setup), 35 is ideal for ride compliance and contact patch confirmation. It just so happens this is the one thing discount tire got correct when they recommended this pressure for me.


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[4creeper]

Now that this mystery is solved, how low is everyone airing down for rocky sandy desert off-roading?

 

[MAST4R]

Now that this mystery is solved, how low is everyone airing down for rocky sandy desert off-roading like in this picture?

I run P-metric (SL) and do NOT air down. I run 33 psi normally in Phoenix and go on trail on those pressures, including Broken Arrow and Backaway to Crown King. I sometimes run 30 and have on occasion 28 but that's it. The only time I had to air down for traction was when climbing Double Crater volcano near Flagstaff (to the rim), which is like climbing a sand dune except it is volcanic ash. I run 36 psi when out-of-state and,having forgotten that, climbed Kamikaze south of Moab at those pressures. Also ran Elephant Hill and Fins and Things at low 30s.

Comfort with aftermarket springs is great at 33 psi. With stock coils, 30 is better.

For traction, there is plenty of give in the tire at 30-33.

In addition to sparing myself the hassle, I don't like airing down P-metric because that exposes the already weaker or presumably weaker sidewalls. The only time I had a sidewall burst was when carrying good speed uphill in a turn and the rear driver tire gave up. It was the one time I decided to air down. I have over 2,300 dirt miles, not counting residential dirt roads, on the 4R with Wildpeaks.

EDIT: if I were running LT, I would be airing down to 20 for comfort pretty much everywhere. When I ran Ko2s on my Outback having to air down for pretty much any dirt road was a big pain (like running E-load on a 4R). Similarly, being stiffer, E-load would not conform well to rocks when the psi is in the 30s.

 

[Decipher]

^Always great information.

Reading back, Falken doesn’t recommend going below 28 psi on SL tires. I know you’ve reported great experience at road pressures and, given the performance I just got at 30 on SLs, I’m sure being a little higher will be just fine especially since max pressure is 50+ psi. I have to admit, it’s nice not messing with pressures for off roading.


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[alcomedic]

285/70/17 with toytec 2 in spacer lift.. No rubbing at all

looks great! are you running wheel spacers and are the 285's the SL's?

 

[Cloudrnnr]

Have the balance issues tended to be in any particular size or load rating? Trying to make a decision on the C-load 275s or stepping up a bit more to the SL 285s

 

[MrGainzz]

Just installed SL 265/70/17 on my limited today and it’s rubbing against the front fender liner when I turn the steering wheel all the way to both right and left. Does this only happen on the limited since the front bumper is lower than sr5 and trd front bumper ?
Anyone know how to fix it?


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[CultSanguinius]

I have a '17 Off-Road and have that tire in 275/70/17 only have rubbing at full turn in reverse however.

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[Decipher]

Just installed SL 265/70/17 on my limited today and it’s rubbing against the front fender liner when I turn the steering wheel all the way to both right and left. Does this only happen on the limited since the front bumper is lower than sr5 and trd front bumper ?
Anyone know how to fix it?


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Limited looks nice with those wheels and the blacked out chrome.

Do some research into the rubbing and heating the fender liner to remold it.


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[Greels]

Just installed SL 265/70/17 on my limited today and it’s rubbing against the front fender liner when I turn the steering wheel all the way to both right and left. Does this only happen on the limited since the front bumper is lower than sr5 and trd front bumper ?
Anyone know how to fix it?


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I have not heard of rubbing on any trim with the stock size, but it would make sense with the Limited having the lower bumper. There is always some variation between each individual truck too so maybe yours is just enough different to cause it.

 

[MAST4R]

Just installed SL 265/70/17 on my limited today and it’s rubbing against the front fender liner when I turn the steering wheel all the way to both right and left. Does this only happen on the limited since the front bumper is lower than sr5 and trd front bumper ?
Anyone know how to fix it?


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Yes, use wheels with offset/backspacing similar to the stock ones

 

[Tj900]

I regularly air down my wildpeaks (265/75r16) on my other rig (Montero limited) to 20 psi all the time offroadiing. They are P-metrics and comfortable at that pressure. The sidewalls although flexy, are stout enough for moderate rock trails in southern california. That extra rubber halfway down the sidewalls really protects it from the rocks IMO. Give it a shot. Im amazed how much more comfortable everything become with some air down!

 

[MAST4R]

I regularly air down my wildpeaks (265/75r16) on my other rig (Montero limited) to 20 psi all the time offroadiing. They are P-metrics and comfortable at that pressure. The sidewalls although flexy, are stout enough for moderate rock trails in southern california. That extra rubber halfway down the sidewalls really protects it from the rocks IMO. Give it a shot. Im amazed how much more comfortable everything become with some air down!

Many thanks for the valuable input. Experiences like yours add exponentially to the value of the thread. It is good to know that you have been doing that in SoCal. Similarly, one of the Texas guys drove a lot of Moab trails while aired down.

I am personally fine with the comfort provided at street pressures though that would also depend on suspension setup.

Indeed, one topic we have failed to discuss is the relation between suspension setup and tires. Maybe another day

 

[drewsro]

I have not heard of rubbing on any trim with the stock size, but it would make sense with the Limited having the lower bumper. There is always some variation between each individual truck too so maybe yours is just enough different to cause it.

I have a 2012 Trail Edition with 265/70/17, stock suspension. I get rubbing when the wheel is turned full to the right and in reverse. That's the only time though I get some rub. Too lazy to fix it though.

 

[Dellethekidd]

I've read every forum over the last week regarding this issue. Can someone please tell me if I am right or wrong.

I own a 2018 TRD ORP. I recently bought the TRD rims, but haven't bought a tire yet.

From what I am reading with the offset no matter what tire I buy at 265/70/17 or 275/70/17 there is a chance it will rub? I have seen a different outcome on basically every forum.

I do not want to lift and I'm looking for an AT tire. Toyo, Falken, Cooper.

Is there any tire that can guarantee it will not rub as I am looking to purchase this week. Any advice/suggestions are appreciated. Thanks!

 

[brtnstrns]

I've read every forum over the last week regarding this issue. Can someone please tell me if I am right or wrong.

I own a 2018 TRD ORP. I recently bought the TRD rims, but haven't bought a tire yet.

From what I am reading with the offset no matter what tire I buy at 265/70/17 or 275/70/17 there is a chance it will rub? I have seen a different outcome on basically every forum.

I do not want to lift and I'm looking for an AT tire. Toyo, Falken, Cooper.

Is there any tire that can guarantee it will not rub as I am looking to purchase this week. Any advice/suggestions are appreciated. Thanks!

Push fender liner forward 1 inch in the front. Use one of many methods to pull mud flap back or remove completely. That should eliminate 90-100% of the rubbing issues assuming you stick with 265 and don't put wheel spacers on.