Wrangler better?

[HereinDaRockies]

I also found that a lower tire pressure greatly contributes to the boom sound. I have Yokohama G015 275/65R-18 tires and it seems like 38+ psi greatly lowers the booming noise. I do not remember if this issue was present when I had the stock duelers. Another interesting observation is that there is no booming noise on @Zimm truck and he had K02's. I've also driven a dealership loaner with K02's and do not recall the noise.

Wow.. so very much tire dependent!?

 

[Zimm]

Wah!? Explain this to be in high school physics.. lower psi results in greater boom?

No clue about that. I cranked the camber to 3.5* and upped the psi as I noticed the dealer loaner was running at 48 without wandering. I’m at about 46, and I’m not wandering. I don’t notice any difference in boom noise. How psi could cause a booming noise I don’t know. I’d think lower would have less of a ping, but that’s just from over inflating rubber basketballs as a kid, and likely apropos of nothing here.

 

[shiv.nandak]

Wow.. so very much tire dependent!?

Well zimm and i drove each others cars and even had a conversation regarding the noise my car had compared to his. At that yime my tires were at 32psi. @Zimm keep me honest here if i am mis remembering something.

 

[Commodore]

No clue about that. I cranked the camber to 3.5* and upped the psi as I noticed the dealer loaner was running at 48 without wandering. I’m at about 46, and I’m not wandering. I don’t notice any difference in boom noise. How psi could cause a booming noise I don’t know. I’d think lower would have less of a ping, but that’s just from over inflating rubber basketballs as a kid, and likely apropos of nothing here.

Do you mean caster?

 

[DaveB]

No clue about that. I cranked the camber to 3.5* and upped the psi as I noticed the dealer loaner was running at 48 without wandering. I’m at about 46, and I’m not wandering. I don’t notice any difference in boom noise. How psi could cause a booming noise I don’t know. I’d think lower would have less of a ping, but that’s just from over inflating rubber basketballs as a kid, and likely apropos of nothing here.

I am running at 36 PSI as recommended and find it great, comfortable and not noisy.
Long highway runs they get up to around 42 PSI as they heat up

 

[MurphyMurph]

I have Nitto Trail Grapplers 37x12.5xR17 124Q if this helps not sure what the factory ones were, but when I get home I can look at the tire-rack If it were a light truck tire it would have “LT” in it.

No idea..

My grenadier has the 18” duelers. I run them at 36psi.

Do the 17” KO2s run “cushier” at the same psi?

I have mine pretty much set to factory specs. 41-42psi front and 46-47psi rear. I have ran them at around 38psi all around and it was quieter. Guess I value mpg and tire wear more than NVH.

 

[MurphyMurph]

I have Nitto Trail Grapplers 37x12.5xR17 124Q if this helps not sure what the factory ones were, but when I get home I can look at the tire-rack.

I think it would have “LT” in the size if it were an e-rated light truck tire. What is the per tire load rating on that tire?

 

[Shroomy]

I think it would have “LT” in the size if it were an e-rated light truck tire. What is the per tire load rating on that tire?

A tire marked "124Q" has a load index of 124, meaning it can safely carry a maximum load of 3527 pounds (1600 kg) per tire, and a speed rating of "Q", allowing for safe speeds up to 99 mph (160 km/h). According to Dr. Google

The stock tires on the Jeeps are as followed :

The Jeep Wrangler Rubicon 392 Xtreme Recon package comes with 35-inch BFGoodrich KO2 all-terrain tires (LT315/70R17C), which have a C-rated load range (6-ply).

Here's a more detailed breakdown:

• Tire Size: LT315/70R17C
• Load Range/Ply Rating: C/6PLY
• Tire Type: BFGoodrich KO2 all-terrain tires
• Wheel Size: 17-inch by 8-inch beadlock capable wheels
• Load Capacity: Each tire is rated to carry a maximum of 2039 lbs