Brian K 2
Active Member
30 PSI Front 35 on the rear? Whats up with that? I have all @35 PSI
PSI Front-back
- Thread starter Brian K 2
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Johnny O
Well-Known Member
For in case you are carrying weight in the back. I'd run 35 up front too, it will handle better.
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I run 36/36
Todd Z
Todd Z
Robert Stanton
Active Member
Can someone give me the whys of that? Todd?
Brian K 2
Active Member
Maybe the suggested tire pressure is to alleviate a bad "push".....I dunno. Seriously In a turn the other night I went in a lil hot....the rear seemed like it would break away while accelerating 1/2 way before the front end was gonna slide. The truck has a nice balance in the turn. I can only imagine the benefits of the upgraded sway links. I agree....I like even pressure all the way around.
Mark Grumpy
Well-Known Member
Hopefully I can remember what I was taught - a long time ago. Paraphrasing;
The strongest part of the tire is the shoulder, where the tread meets the sidewall. The less weight that is put on the sidewall and shoulder, the more pressure is required to maximize the contact patch of the tread - effectively equalizing the tread and shoulder strengths. The more weight applied, the more the sidewall and shoulder collapses requiring less pressure to produce a flat contact patch. This is why overinflation causes the center of tread to wear and under inflation causes the shoulders to wear.
Therefore, front of ST being heavier requires a lower pressure to maximize tire/road surface contact.
I don't know the truths to all this so it is not gospel. Just the way someone 'splained it to me.
grump
The strongest part of the tire is the shoulder, where the tread meets the sidewall. The less weight that is put on the sidewall and shoulder, the more pressure is required to maximize the contact patch of the tread - effectively equalizing the tread and shoulder strengths. The more weight applied, the more the sidewall and shoulder collapses requiring less pressure to produce a flat contact patch. This is why overinflation causes the center of tread to wear and under inflation causes the shoulders to wear.
Therefore, front of ST being heavier requires a lower pressure to maximize tire/road surface contact.
I don't know the truths to all this so it is not gospel. Just the way someone 'splained it to me.
grump
Johnny O
Well-Known Member
IMHO factory recommended tire pressures are usually optimized for a smooth ride and nothing else. I have larger-than-stock tires on the stock 7" rims (so far) and I run 32 all-around. I guarantee 30/front will wear out the outer edges of the tires faster. 35/front sharpens up the handling nicely and it won't turn like a pig.
"Zippy, it's pushin' real bad, gimme a half-pound in the right front and a turn of wedge." :lol:
"Zippy, it's pushin' real bad, gimme a half-pound in the right front and a turn of wedge." :lol:
Brian K 2
Active Member
:lol::lol::lol:
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- What engine do you have?
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- What year is your Sport Trac?
- 2010
- What Generation is your Sport Trac?
- 2n Gen Owner
what, NO track bar adjustment?????
LOL...
The tire pressure by the manufacturer is what they feel gives you the best of all worlds..
But run the tire at 30psi. It goes low, to 25, you will KILL a set. But if running 36 and they go a little low say 32, your still safe.
And I noticed a huge improvement from the 30 to 36 all around..
Todd Z
LOL...
The tire pressure by the manufacturer is what they feel gives you the best of all worlds..
But run the tire at 30psi. It goes low, to 25, you will KILL a set. But if running 36 and they go a little low say 32, your still safe.
And I noticed a huge improvement from the 30 to 36 all around..
Todd Z
Eldon Webb
Active Member
I have always ran 35 35, but if My main man says 36 36, then that is what it will be.:lol:
:lol:Brian K 2
Active Member
Don't touch that track bar....the suns coming out in few....Oh yeah this engines like an old man......it wakes up for a while then it goes back to sleep!
