Air Down pressure? (37 Nitto's on Slabs)

[steadfast91]

Looking to see what seems to work best in Arizona deseart/rocky conditions?

I have been running KM2's and airing down to 12 psi and they are chunking really bad.

Just got a new set if 37" Trail Grapplers that are on Slabs.

 

[Tackerdown]

Do you have bead locks

Tom now Free

 

[OverlanderJK]

You have Nitto's. they won't chunk nearly as bad as your BFG's.

 

[10frank9]

Looking to see what seems to work best in Arizona deseart/rocky conditions?

I have been running KM2's and airing down to 12 psi and they are chunking really bad.

Just got a new set if 37" Trail Grapplers that are on Slabs.

Edit: I see you said Km2's are chunking, yes they are known for that, along with pro-comps. You can air down to 8-12 no problem. Like Overlander said Nitto's do very well at low PSI and don't chunk.

Do you have bead locks

Tom now Free

Slabs are Beadlocks, made by ATX.

 

[wayoflife]

Looking to see what seems to work best in Arizona deseart/rocky conditions?

I have been running KM2's and airing down to 12 psi and they are chunking really bad.

Just got a new set if 37" Trail Grapplers that are on Slabs.

You guys have some really nasty sharp rocks out in AZ. I don't know if there's really anything you can do to prevent chunking.

 

[suicideking]

Also curious what he should air down to. Beadlocks and 37's are on my list..

I've been airing down to 10 psi with 35 X 15 GY MTR's. So figure you could go lower than that.

 

[wayoflife]

Also curious what he should air down to. Beadlocks and 37's are on my list..

I've been airing down to 10 psi with 35 X 15 GY MTR's. So figure you could go lower than that.

Depends on the tire. For something like a BFG or GY MTR, I wouldn't go lower than 10 psi as their sidewalls are thinner and don't need to go lower. On something like a Toyo MT or Nitto Mud Grappler which have super thick sidewalls, 6-8 psi is pretty standard and you'll still have people telling you that you're not aired down enough.

 

[GCM 2]

Also curious what he should air down to. Beadlocks and 37's are on my list..

I've been airing down to 10 psi with 35 X 15 GY MTR's. So figure you could go lower than that.

Depends on the tire. For something like a BFG or GY MTR, I wouldn't go lower than 10 psi as their sidewalls are thinner and don't need to go lower. On something like a Toyo MT or Nitto Mud Grappler which have super thick sidewalls, 6-8 psi is pretty standard and you'll still have people telling you that you're not aired down enough.

When I ran 40" Goodyear MTR/K's (C load rating), I did run down to about 8 psi if my jeep was not loaded, an example would be when we did the Florence Junction Run; I had no doors, no passenger, very minimal tools and recovery equipment, so about as light as my four door could be. As Wayolife states, the MTR/K's have very thin sidewalls so you don't need to air down as much. During an event like a JK Experience when my jeep is at its heaviest load, 10-12 psi was plenty low with the Goodyears and their C load rating.

Now that I am on 40" Mud Grapplers (D load rating) i run very low psi, last weekends "Back way to Crown King" run, I was down at 6 psi because I had no weight in the jeep and probably could have dropped another pound (maybe two). At my heaviest weight during the 2012 JK Experience, I safely, and comfortably, ran 8 psi for the entire event.

As for Arizona having sharp rocks, yes we do, Wayolife and Bleadbeet have experienced this first hand. I went through two MTR/K's in a weekend (tires had maybe 10k miles), while the guys running Toyos and Nittos had zero issues. One of the reason I went back to Nittos.

 

[wayoflife]

As for Arizona having sharp rocks, yes we do, Wayolife and Bleadbeet have experienced this first hand. I went through two MTR/K's in a weekend (tires had maybe 10k miles), while the guys running Toyos and Nittos had zero issues. One of the reason I went back to Nittos.

Well, I wouldn't say zero issues. Your razor sharp rocks cut up the hell out of our brand new Toyos :crazyeyes:

 

[suicideking]

Thanks for the info. :beer:

So looks like you guys mostly run the Nitto's and Toyo's? I've been pretty happy with the MTR, but might switch to one of those when I move up to 37's.

 

[GCM 2]

Well, I wouldn't say zero issues. Your razor sharp rocks cut up the hell out of our brand new Toyos :crazyeyes:

Whoa,whoa, whoa! It's like you are saying that I personally went out and placed razor sharp rocks on the trails we ran, just to cut up your new tires. Well maybe I did, maybe I didn't :icon_crazy: