level with rear air suspension - Dodge Cummins Diesel Forum
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post #1 of 16 (permalink) Old 07-23-2019, 11:56 AM Thread Starter
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level with rear air suspension

Leveling kits for 2019 2500 4x4 w/auto level rear suspension seem hard to come by. In asking a couple of different parts distributors about this topic I have conflicting answers and wondered if anyone here can provide me with a definitive answer on this topic ... here are the two theories

1. a front leveling kit will not work as the air suspension will "think" it is loaded due to the change in attitude of the truck and keep trying to compensate, a specific kit to compensate for this is needed or change the rear air suspension sensor rods to adjustable ones to adjust.

2. a front level kit will work fine, the rear suspension is not being compressed therefore it will remain at the nominal position and not change by raising the front end.

Any help would be appreciated guys - thank you.


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post #2 of 16 (permalink) Old 07-23-2019, 12:07 PM
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Basic physics dictate that the rear suspension has no idea, and doesn't care, about how level or not the vehicle is.
The only thing it can do is keep the distance between the axle and bump stops the same regardless of load, within reason.

Whoever provided the theory you listed under "1" would not be on my list of potential suppliers.
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post #3 of 16 (permalink) Old 07-23-2019, 01:59 PM Thread Starter
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Originally Posted by Jimmy N. View Post
Basic physics dictate that the rear suspension has no idea, and doesn't care, about how level or not the vehicle is.
The only thing it can do is keep the distance between the axle and bump stops the same regardless of load, within reason.

Whoever provided the theory you listed under "1" would not be on my list of potential suppliers.
Yeah I got thinking about it and theory 1 would propose that if I parked on an incline the rear of the truck would try to raise up . That make 0 sense. Thanks for your reply on this, much appreciated.
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post #4 of 16 (permalink) Old 08-01-2019, 12:10 PM
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Once you level however, your “alternate trailer height” setting is rendered pretty much useless. You will sag like a Chevy. LOL


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post #5 of 16 (permalink) Old 08-01-2019, 12:35 PM
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Well, simply running in Alt. trailer height would indeed accomplish the same thing, making the pickup level, and much cheaper and easier.
But leveling kits seem to be popular.
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Maybe if we start telling people that the brain is an app, they will start using it?

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post #6 of 16 (permalink) Old 08-01-2019, 01:09 PM Thread Starter
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Well, simply running in Alt. trailer height would indeed accomplish the same thing, making the pickup level, and much cheaper and easier.
But leveling kits seem to be popular.
True - but my reason for "leveling" is to raise the front end by 2.5" in order to fit larger (35") tires, not just to level the truck out. Thank for pointing out that little trick though, makes sense!!

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post #7 of 16 (permalink) Old 08-01-2019, 10:04 PM
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Originally Posted by rboothroyd View Post
True - but my reason for "leveling" is to raise the front end by 2.5" in order to fit larger (35") tires, not just to level the truck out. Thank for pointing out that little trick though, makes sense!!
Have you verified that 35s will NOT fit on a stock front end with OEM wheels
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post #8 of 16 (permalink) Old 08-02-2019, 09:05 AM Thread Starter
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Have you verified that 35s will NOT fit on a stock front end with OEM wheels

I am assuming they won't but I do not know this for sure (you know what they say about assume lol) - if anyone has confirmed on a 2019 2500 megacab limited 4x4 w6.7L Cummins, let me know.

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post #9 of 16 (permalink) Old 08-16-2019, 04:39 AM
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Quote:
Originally Posted by gsbrockman View Post
Have you verified that 35s will NOT fit on a stock front end with OEM wheels <img src="https://www.cumminsforum.com/forum/images/smilies/confused.gif" border="0" alt="" title="Confused" class="inlineimg" />

I am assuming they won't but I do not know this for sure (you know what they say about assume lol) - if anyone has confirmed on a 2019 2500 megacab limited 4x4 w6.7L Cummins, let me know.
I have 295/70R18 on my truck 34.8"×11.9". This is without a lift I have no rub and plenty of room to spare on the factory wheels.
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post #10 of 16 (permalink) Old 08-20-2019, 03:27 PM Thread Starter
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I have 295/70R18 on my truck 34.8"×11.9". This is without a lift I have no rub and plenty of room to spare on the factory wheels.
Looks awesome!! Thanks for the feedback. I'm thinking of 295/65R20's (35.1x11.6). Pretty darn close to yours so I'm encouraged!!

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post #11 of 16 (permalink) Old 09-07-2019, 10:06 PM
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I just got 285/65-20 BFG TKOs installed and they rub slightly in one spot in back of the front tires while turning. I have a 19 laramie mega cab.
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post #12 of 16 (permalink) Old 09-07-2019, 11:10 PM Thread Starter
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Originally Posted by 19silvercummins View Post
I just got 285/65-20 BFG TKOs installed and they rub slightly in one spot in back of the front tires while turning. I have a 19 laramie mega cab.
A few questions ... did you put a leveling kit (or lift) on it? Are the tires on stock 20" wheels? And when you say "they rub slightly in one spot in back of the front tires while turning" am I correct in assuming you mean they are rubbing on the inner fender at the back? I'd appreciate it if you could let me know. Thanks for the feedback much appreciated!!!

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