Rough ride.

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Feb 9, 2019 | 10:51 AM

#31

jav_eee

Laughing Gas

Joined: May 2017

Posts: 969

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Quote:

Originally Posted by Celtictexan

I tried the 60/45 and it's a world of difference. Drove to town today and I'm pretty sure all four tires were on the ground at all times. Now what to do about that low pressure light......

OBD2 adapter and Forscan.

Feb 9, 2019 | 02:08 PM

#32

Celtictexan

Thread Starter

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Joined: Aug 2016

Posts: 74

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Quote:

Originally Posted by jav_eee

OBD2 adapter and Forscan.

Thanks. Hopefully ford will do it for me.

Feb 10, 2019 | 09:32 AM

#33

jav_eee

Laughing Gas

Joined: May 2017

Posts: 969

Likes: 30

Quote:

Originally Posted by Celtictexan

Thanks. Hopefully ford will do it for me.

I doubt they will. Same reason why they instruct you to run at max psi all the time. Liability. Even forscan pops up a warning about not setting it lower than the setting on the door placard. You're gonna have to do this one yourself.

Feb 10, 2019 | 10:24 AM

#34

speedfreak78

Cargo Master

Joined: Nov 2007

Posts: 2,238

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You should chalk new tires to set the correct unloaded air pressure. If you run the door sticker pressure all the time your tires, especially the rears, balloon, or convex, and wear the center treads faster. It doesn't really work for used tires, as the tread has already worn to the air pressure is been run at. With old tires, to even the tread and find the best pressure, you can measure tread depth across the tire, if center depth is shallower than the edges, lower pressure to concave the tire. If the center tread is deeper, raise pressure to convex the tire.

How to chalk a tire :
https://www.intercotire.com/using_ch...etermining_psi