Chalk Test on Mud Terrains

[PyrPatriot]

Tried doing a chalk test, seemed simple. I am running Falken MT01 mud terrains in 35x12.5x17 on factory rims at 30psi on a hot day. Ran the test in adjacent lot after work.

At 30psi I am still over inflated, as the chalk left of the pavement is about an inch or two narrower than the measured width of my tire. I couldn’t tell with the first car length so I drove down a couple dozen parking spaces and had the result at the bottom picture. First ones are after one truck length

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[KAT$JT]

I run that same size in BFG KO2's and found 28 psi cold works great.

 

[12BNNT]

Doesn’t look too bad, really. The falcons have a little bit of a rounded surface for streetability. I did similar to find a better tire pressure for mine. Cheap and easy way is to wet the driveway down and pull into the garage. Look at the footprint on the floor behind each tire. Running 30 psi in my 37’s for flat print. Bonus is the wet mark evaporate away, no chalk to clean up.

 

[NateKY]

I agree with the others. I think you are good at 30 psi. Easy to remember also. Don’t think I could keep tires at 27 or 28. Lol

 

[PyrPatriot]

Doesn’t look too bad, really. The falcons have a little bit of a rounded surface for streetability. I did similar to find a better tire pressure for mine. Cheap and easy way is to wet the driveway down and pull into the garage. Look at the footprint on the floor behind each tire. Running 30 psi in my 37’s for flat print. Bonus is the wet mark evaporate away, no chalk to clean up.

thanks. I did wonder

I agree with the others. I think you are good at 30 psi. Easy to remember also. Don’t think I could keep tires at 27 or 28. Lol

I think I will keep it at 27. When I drive the psi goes up to 32

Oh and one thing I noticed. When I had my tires at 33 per the tpms a tire guage (nicer one from Slime for RVs and trucks) said it was at 36-37. So if the sensors overinflate by 3-4psi (because why wouldn’t Jeep cover their asses by being conservative when folks really deflate their tires off roading) my 30 is probably 33-34

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