Arterius2
Well-Known Member
- First Name
- Jerry
- Joined
- Dec 29, 2018
- Threads
- 42
- Messages
- 3,556
- Reaction score
- 4,830
- Location
- Vancouver, BC
- Vehicle(s)
- 2018 JLU Sahara 2.0L
I didn’t suggest people have to stick by the door jam, I simply said I’m running that PSI currently on my Duratracs and it’s doing great for the highway miles during weekdays. I was implying tires with higher PSI can track straight if it’s properly mounted and aligned. I obviously air down when I hit the trails.I am sorry, but this is just wrong.
if you had said you “might” not have to drop below 35, i could agree.
tire pressure is dependent upon the tire first, then the weight at each corner.
different tires have different load characteristics. How many ply is the tire? How stiff is the sidewall?
chalk test is one of the best & easiest ways to help find the proper pressure.
the door jam sticker is for the factory vehicle, and even then, it is NOT necessarily the best pressure for the tires. It is the best all around for a factory vehicle with the factory tires. (Best trade off of mpg, safety, and ride).
OP explained that his vehicle is now far from stock, so it does not make sense to suggest arbitrary numbers from the door jam. (Although i completely agree with you that dropping down to 15psi for driving on the street is not only wrong, but downright dangerous)
cheers
Like you mentioned tires have different sidewalls, so I also ran different tires at different PSI after extensively testing them. Duratracs have thinner sidewalls so after testing I decide to run them slightly higher.
If you kept reading this thread, I later went into depth on tire treads and debunked the chalk test myth on modern AT/MT tires.
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