(beep)
- [Off Camera] Action!
- Hey I'm Shawn!
- I'm Brad!
Hello!
- Welcome to Custom Offsets TV!
You're gonna learn today, boiiiii!
(everyone laughs)
(beep)
- Alright guys, so I guess Shawn didn't want to tell you
but today we're gonna be learning about air pressure
in your tires 'cause that seems
to be a pretty popular subject.
'Cause no one knows what to run and everyone has
different opinions and today we're
gonna share our opinion on air pressure.
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♫ Got the line bar with 'em
♫ Double chromed out stacks
♫ Yeah we love to get 'em dirty
♫ But still, they so clean
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♫ We on top of it now
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♫ We're taking over the game
- So you probably already seen,
but if you haven't go check it out.
We did a load index video.
So that gets into the vehicle ratings, the axle ratings,
figuring out what you need for load index for your tires.
That is the number on the side of it.
Go watch the load index video if you want to see all that.
We're not doing that today.
On that video and on a bunch of other ones,
people keep asking, "but I've got a
Chevy Silverado half-ton, a F-150 half-ton, what should I
run for tire pressure," right?
I hear it,
- Yeah.
- Every freaking day.
- Yeah.
- 'Cause they go from all-train tires to mud tires.
They show up, we send them out
pretty much all at about 35 pounds, 32 to 35 pounds.
- Yeah.
- Which is pretty much what most of 'em run isn't it?
- Yeah half-ton, yeah.
Probably, mm-hmm, for a half-ton truck yeah.
- And if you look on the door placard,
that's pretty much what it's gonna tell you right?
It's probably 32 PSI or something
like that that they want it.
- Yeah in a half-ton around there.
It also depends like on the tire, like you said.
Some of the half-tons nowadays actually
run a P-rated tire or a passenger rated tire,
- Yeah.
- Because, I mean with the technology nowadays, the
passenger rated tires can hold a
pretty good amount of load compared to back in the day.
So, and they offer,
- You said, "all the good load."
(Shawn laughs)
- I don't know what I said.
- So what, what Brad was just showing me,
what I've always done is I just
went off what I think the vehicle runs.
- Yeah.
- As it turns out, you can just look on the door
and this one will tell you flat out,
the stock tire size, the stock wheel size,
and then what PSI they suggest to run.
So they're talking 37 PSI and then that goes
hand in hand with what the rating is for the axles.
So that means that I should be running these tires
at 37 PSI, irregardless of what it says
on the side wall, your saying, basically?
- Yeah, but as long as that rating isn't higher,
than what, you know, the maximum is
on the tire, which in this case it isn't,
- Yeah.
- But if someone has the wrong
tires on their vehicle and they have
a passenger tire or something on their truck and
they'll say the max pressure, is say,
30, 35 PSI, don't put it to 37, yeah.
- So this one says max 65 PSI, if
I throw it on this super duty, which wants 80,
- Mm-hmm.
- And jack it up to 80, I'm basically running an
unsafe tire, 'cause I've overrun the PSI in the tire right?
- Yeah, you're running and under-rated
tire in terms of load and handling capacity.
- And, I think that's the one we
see the most, is people buying mud tires,
- Yeah.
- It's a load E so they think that
it's okay, but it's a max 60 PSI,
their TPMS light comes on because
when they get them they're at 35,
- Mm-hmm.
- So they crank 'em up to, until the light goes off,
which would be 80, now you're running
a mud tire down the road way over pressured,
- Yeah.
- And it probably runs like a dump truck, wouldn't it?
- Yeah man, that's,
- If you don't die.
- That's how they blow up.
- Yup.
- Because of the heat build up and all that, but yeah.
And so, on this truck we had an issue where
the truck calls for, if you look on the door here,
- This one's right over here.
- It's over there.
You can see, I don't know if you wanna,
- He's the expert.
- If you wanna look at that or not.
- Do a close-up bro.
- Yeah come over here dude.
- Let's all get in here, come on, fall in.
- Let's huddle up a little.
- Yeah it looks good.
- This truck, if you look, it's a
little clearer to look at this one.
- I like this one.
- This truck calls for, in the front, they call for 60 PSI
and in the rear, calls for 80 PSI.
Typically, three-quarter and one-ton trucks always
call for more PSI in the rear because when you're
hauling or towing, all the weight's gonna be in the rear,
as opposed to up front, which is just, you know you
got a fixed weight up front, it's not a variable.
You're not loading the front up with stuff.
You're loading the back up, so,
- Unless you have Turbskies.
- Unless you got Twin Turbskies or something.
(engine roaring)
(Shawn and Brad laugh)
But, yeah so this truck calls for 80 in the back and 60,
what'd I say, 65 in the front?
- 60 up front.
- 60 in the front, so what happened was,
they came to us with like 30 or 35 PSI in 'em,
and when we put 'em on the truck, immediately the
TPMS light comes on on the dash because
the truck knows there's not enough air in the tires.
Well fortunately, these tires are the proper load index,
- Yeah.
- For this truck.
They're actually a little heavier duty.
- Yeah, 129.
- It has a 129 load index so they're actually
a little heavier duty than what the truck came with
so they do have a max pressure of 80 PSI,
- Yup, that's here.
- Which is what the rear will call
for under max load circumstances.
So, if you're gonna load this truck to the max,
you're gonna wanna run your maximum pressure
that's recommended, so 80 PSI, to get the
maximum load carrying capacity out of the tire.
But then up front, you run 60 PSI in the front
because that's what it calls for based on
the weight that's on the front of the truck
and blah, blah, blah and all the engineers figure that out.
- Yup.
- And then, what do we wanna say here, we're getting at?
- Well, basically, so that's the ideal, right?
- Mm-hmm, yeah.
- So could you run both of these at 60?
- Yeah, absolutely.
- Could you put mud tires on here and run 'em at 35?
- You could depending on, if you were gonna
run mud tires at 35 PSI, you're not gonna
be putting 2,000 pounds in the bed.
- Yeah.
- You know, you can only load your truck
as much as the tires will allow it pretty much.
- Yeah.
- People don't really think of that, but think about it,
your whole vehicle's riding on that little pocket of air,
- Yup.
- Under the rim there.
- So you can do it but you're probably gonna die.
- Well you could do it as long as your unloaded weight
is safe for what the tires are rated for,
- Yeah.
- I guess, you should say.
- So I ran into that with my three-quarter-ton.
It's a gasser so it's not as heavy as your
diesel's gonna be, and then I wanted
mud tires and nobody was making, a load
index tire big enough back then,
- Yeah.
- So all I did, was I, they were
max 65 like those, so I ran 'em up to 55.
That was enough to make my TPMS light go off,
and I just knew that I couldn't load the truck up or
pull that trailer of the max weight.
- Mm-hmm.
- I knew I just had to take it easy.
And I think, you know, that's what we got back
from the load index video, but these people are saying,
"But I can," well yeah, you can do whatever you want,
but we're telling you, what our advice is,
is to follow the placards on the vehicle.
Compare 'em to the maxes on the
tires and that's what you should be running.
- Mm-hmm.
- So, you know, as tire professionals, which Brad is, right?
Somebody around here is.
- I swear.
- We're saying to follow those, so that's your ideal,
but you can go different variants with inside of that.
- And the one thing, yeah, one thing also is, you know what,
people ask what's optimal and every time's kinda gonna be
a little different, what they like better.
'Cause you'll see people over-inflate tires
or under-inflate tires and that's kind of a trial
and error thing once you have a tire on your truck.
So, for this tire for instance, so its max PSI is 80,
now I wouldn't go running around with 80 PSI
in the back tires at all times, like the truck calls for,
because it's gonna start where, you'll see where,
just occurring in the center of the tire here,
- 'Cause you were just in the contact patch so much.
- Yeah, 'cause you're pressurizing the tire so much,
most of the, the surface area of the
tire where it's touching the ground
is just gonna be concentrated in this area,
- Yup.
- 'Cause it's pumped all the way up and
you'll get a wear just right here in
the middle here, and that's how you'll
tell that you're over-inflating your tires.
So if you're gonna be running around empty or
unloaded all the time, there's nothing wrong
with running 'em down to 60 PSI and matching
the front or something like that.
- Now this truck will yell at you won't it,
- Yeah, yeah.
- It'll say TPMS, the tires are low in the rear?
- Yeah, when you're lower.
Yeah, the TPMS works basically, there's a threshold,
so the computer looks for 80 PSI and once,
it's probably like 25, once it sees a 25% differential
in pressure, it'll set the light off.
- Okay.
- So once it reaches that it'll set the light off,
but as long as you know, you know, you make sure
you don't actually have a flat,
you can ignore the light, but,
- Oh, don't do that.
(Brad laughs)
For legal reasons.
- Yeah,
(Shawn laughs)
okay don't do that, but, yeah you can, like I said,
if you're gonna be running around unloaded,
there's no reason that you can't be running your rears
at say 60 PSI or something under the maximum rating.
But then when you do go to tow,
you know, you want to bump 'em back up,
- Yup.
- To 80 PSI or their max pressure
for their max load capability.
Should we go check out that guys tires?
- No way.
- See if he's got the right load index?
- That guys creeping me out.
He's pulling way to much weight and
those tires look shifty at best.
(Brad laughs)
So to boil it down, shoot I never knew, tire pressure,
you basically read the door placard,
look at the side wall of the tire, see if you match that.
If you didn't you bought the wrong tires,
then do whatever the hell you wanna do 'cause it's kinda
too late and you just gotta make due or go get new tires.
But ideally you would be running with that door says.
What we would say, for a half-ton is 30 to 35 pounds is
pretty much what we see everybody running,
it's pretty much how we're gonna send 'em to your doorstep.
If you're getting them for this vehicle,
we don't get into that level of detail.
You need to add air to them when you
get them and air 'em up to match your vehicle.
But your TPMS will be coming on
letting you know that you're way off.
So it's always ideal, everyone's gonna
have that door placard, just match it up
and make sure that your tire can handle it
and that's what you should be running.
So, anymore questions, check out the load index video.
If you guys wanna know anything else let us know.
I mean this was a spur of the moment,
people keep asking about tire pressure.
We took our best crack at it, nobody got
hurt except for maybe that guy.
- That guy might be dead.
- Yeah, he died.
Peace we're out.
(Brad laughs)
- See ya.
I wanna ice cream.
I could go for ice cream right now.