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post #1 of 19 (permalink) Old 06-19-2017, 11:11 AM Thread Starter
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Question Trailhawk Beach Driving

Hi,


I have a 2016 Cherokee Trailhawk V6 I picked up slightly used this last December. Yesterday, I finally took it on its first venture onto Freeman Park Beach in Carolina Beach, NC. Before I went onto the beach, I lowered the tire pressure from normal 36 PSI (Standard Firestone AT tires) to 25 PSI. I just flipped the dial to "Sand/Mud" and started out. I made sure not to stop and all was ok. Met up with some friends and their truck and hung out for 3 hours. However, when going back I had to slow down when somebody in front of me made a bad move, and I ended up getting stuck. Luckily I had a decent snatch strap and somebody came along and helped me get out.


However, while talking to people on the beach, I got a couple of different suggestions. First, a Carolina Beach Fire Dept guy told me I should lower my PSI to 15. Secondly, I was told I should put it in 4 wheel drive lockdown. I did manage to get it into this mode, but it took a while to get it back to normal. My question is two-fold: 1) What typically are good recommendations for the driving mode, PSI, and any other tips so I can avoid getting stuck? There were people around to help this time, but I don't want to get stuck in a situation where I am going to have to call for a $250 tow or something; 2) Is there some kind of tutorial on how to use the driving mode selector? I read the drivers manual, but (at least to me) seems like it doesn't explain it very well.
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post #2 of 19 (permalink) Old 06-19-2017, 11:43 AM
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Quote:
Originally Posted by David Perry View Post
Hi,


I have a 2016 Cherokee Trailhawk V6 I picked up slightly used this last December. Yesterday, I finally took it on its first venture onto Freeman Park Beach in Carolina Beach, NC. Before I went onto the beach, I lowered the tire pressure from normal 36 PSI (Standard Firestone AT tires) to 25 PSI. I just flipped the dial to "Sand/Mud" and started out. I made sure not to stop and all was ok. Met up with some friends and their truck and hung out for 3 hours. However, when going back I had to slow down when somebody in front of me made a bad move, and I ended up getting stuck. Luckily I had a decent snatch strap and somebody came along and helped me get out.


However, while talking to people on the beach, I got a couple of different suggestions. First, a Carolina Beach Fire Dept guy told me I should lower my PSI to 15. Secondly, I was told I should put it in 4 wheel drive lockdown. I did manage to get it into this mode, but it took a while to get it back to normal. My question is two-fold: 1) What typically are good recommendations for the driving mode, PSI, and any other tips so I can avoid getting stuck? There were people around to help this time, but I don't want to get stuck in a situation where I am going to have to call for a $250 tow or something; 2) Is there some kind of tutorial on how to use the driving mode selector? I read the drivers manual, but (at least to me) seems like it doesn't explain it very well.


Here is a video explanation of the modes:
https://youtu.be/qvQVaFKPIPI

Now onto your other questions. 15 psi if using stock tires is pushing it but can be used if you air back up when you get to road and don't drive fast.

It's been told to us by jeep engineers that if on the beach in soft sand to use low range and sand/mud mode. Do not use the rear locker. In high range the rear diff overheats and shuts off causing you to get stuck. Also consider carrying maxtrax. They are things to out under your tires to help you gain traction and pull yourself out.


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post #3 of 19 (permalink) Old 06-19-2017, 11:44 AM
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You want your tire pressure to be as low as you can get it without losing the bead and going to zero psi. :P That's going to depend on tire/wheel/weight/conditions. I've had my pressure as low as 20 psi without any problems. Others have gone as low as 15-18. Rumors of people going down as low as 12. The problem you run into is that if you lose the bead, there's generally no way to recover on the trail other than putting the spare on.

4WD is almost required for soft sand. Low range will bring the engine RPMs up while maintaining a slower speed. The lockers can also help but consider that they are designed in case one tire is slipping. In the case of sand, both tires are "slipping" and generally about the same amount.

4-Low and Lockers can "help", but the primary improvement is tire pressure and avoiding stops.
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post #4 of 19 (permalink) Old 06-19-2017, 09:37 PM
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it depends a bit on the type of sand. if it's fluffy then 12 PSI on a trail hawk are good. if the sand is more compact then 15-20 is good. I run mine in cape cod at 15 PSI. a friend got my TH stuck and I drove it out with 10 PSI no problem.
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post #5 of 19 (permalink) Old 06-19-2017, 11:57 PM
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I'm very experienced in sand driving. 15 psi and I've never gotten stuck. 4LOW is better as well since it locks the 4WD and the car doesn't have to work as hard and you'll get better mileage. I don't use sand mode myself, I don't like how it shifts, I use auto. Avoid abrupt movements as you've discovered.

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post #6 of 19 (permalink) Old 06-20-2017, 08:53 AM
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What is recommended for soft sand in a Cherokee workout AD2? Just sand/mud and 15 PSI? Any one have a rec for a 12V tire pump to keep in the back just in case?


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post #7 of 19 (permalink) Old 06-20-2017, 09:31 AM
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I use to take my F350 pulling my 30' toyhauler out on the sand all the time and never got stuck. Air down all the tires, put it in low range, keep your momentum up, and avoid abrupt actions when possible. One time I saw a guy in a Subaru bury it. On his roof rack, he had two 2x6's covered in grip tape. He dug out in front of the tires, slid the boards in and out he came.

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post #8 of 19 (permalink) Old 06-20-2017, 10:47 AM
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My only beach driving trip was with @IRSmart, we went with 15PSI and I got to play around with the various settings. I found 4 Low and "Automatic" to be the best. I didn't like the high RPMs and felt like the engine was holding back on Mud/Sand mode.
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post #9 of 19 (permalink) Old 06-20-2017, 11:59 AM
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12 psi in auto w/ highway tires works for my 4cyl AD I up here in MA
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post #10 of 19 (permalink) Old 06-20-2017, 12:07 PM
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Quote:
Originally Posted by tjk2084 View Post
What is recommended for soft sand in a Cherokee workout AD2? Just sand/mud and 15 PSI? Any one have a rec for a 12V tire pump to keep in the back just in case?


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