Sh*t I Never Knew: Get Pumped Up || Tire Pressures

Sh*t I Never Knew: Get Pumped Up || Tire Pressures


(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. ♫ Big trucks ♫ Decked out ♫ Running through the
world in the next style ♫ Rims so big and the windows black ♫ Got the line bar with ’em ♫ Double chromed out stacks ♫ Yeah we love to get ’em dirty ♫ But still, they so clean ♫ Custom Offsets T stands for the team ♫ We on top of it now ♫ We ain’t never gonna fade ♫ So you better get ready ♫ 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.

Only registered users can comment.

  1. I figured out right away on my 2500hd that the toyo r/t rears were wearing out in the middle above 65psi. So I run 60psi all around now.

  2. I've got a 2014 F150 with Toyo Open Country M/T and I run around 45PSI in mine and they ride pretty good. I tried running em at 50PSI one time and it rode like a freaking bulldozer. I think I'm gonna try running em at 35PSI and see how I like it since the truck calls for that. Very helpful information! Keep up the awesome work Custom Offsets!!

  3. Easy I ALWAYS run what the door says to run. If your tires can't match what the door say then you need to get new tires

  4. Incorrect! The door plaque psi is based on factory tire specs only. I was running 35 psi per my door plaque on aftermarket BFG K02s. Out of curiosity called BFG direct and told them my tire and vehicle info and they said recommended psi was 55. Long story short always call tire manufacturer and not trust the plaque. They do a calculation based on the weight of your vehicle for the best psi to run your tires at.

  5. One trick I have used for years for setting pressures is something I learned from the off road industry. I use a flat dirty concrete floor for this.
    Use either the dirt on your floor or some chalk and make a wide mark from one sidewall, over the tread, to the other sidewall and drive your vehicle forward until your tire makes one full revolution. Look at the mark on your tire and the floor and adjust your pressure until you have a full with contact patch. On pickups and cars that the owners like to make fast corners or a lot of tight turns I always bump the front tire pressure up a little until about 1/2"-3/4" of the outer most tread patch aren't leaving a mark. I have found this little bit of increase helps with cupping, it won't stop all of it, but it makes a difference.

  6. Only way to find your correct psi with aftermarket wheels/tires is to: 1. Load your vehicle 2. Fill to a decent psi 3. Use chalk and color 2 or 3 inch section, the entire width of the contact patch 4. Drive half a mile or so and check wear pattern 5. Adjust psi accordingly to achieve nice even wear pattern

  7. I've notice on almost every video you put 12.5 wide tires on a 12 wide wheel. That is unsafe because it doesn't meet wheel fitment! You must have at least a 13.50 wide tire on a 12 wide wheel. Try having shit I never knew on wheel fitment. Still love your videos though!

  8. When figuring out tire pressures for oversize tires, you can use a Tire Guide manual (available to Pros) or the manufacturers websites to see what the original tire is rated to carry at its recommended pressure, and then look up that weight on the new tire size to see the corresponding air pressure. It works real well when going from P rated tires to LT rated tires, as the Tire Guide DEDUCTS 10% from the actual carrying capacity of the LT, for a safety hedge. Look up a P235/75R15 XL and you'll find it's rated to carry more than an LT235/75R15 LR C. This goes out the window with TPMS, unless you can reprogram it.

    Side note – most vehicles "black box" know if you're driving with the TPMS light on. It could bite you in case of an accident.

  9. i have a 2011 LML and have the "Load E" toyo mt's max 65 psi. door asks for the same as that super duty, but i have them at 60 all the way around unloaded. never tow

  10. See that's why QUEERbummer fkd, the auto industry , with his TPMS & ethanol , because if you upgrade tires over stock then there is no reference so you need to know the cross references by going off the stock tire rating according to weight then trial & error on the dash then trial & error on the road & from your bank account when you ruin your tires from over inflation because the dash light says so

  11. Good job. This is good information. The load index determines mostly what vehicle you can put the tires on and how much you can inflate them. Tire manufacturers don't calculate for specific vehicles unless they are made for specific vehicles. The automakers has variables that they use to adapt tires to their vehicles. You should always be around where the door sticker says (+10 psi of what the door sticker says would be the max) unless you are towing. So many people over inflate and it makes their tires wear fast and uneven.

  12. My truck sticker calls for 32psi.. When I wrote to nitto they replied I need 40psi front & rear for the trail grappler.. 35×12.50×20.

  13. what if you put LT tires on a half ton and the tires says 80psi max. still only run them at 35psi? thanks guys, really appreciate your video's

  14. So if I order a tire and rim package and tell you what my door sticker says and say all I will do is put max a few hundred pounds in bed of truck will y'all set pressure to correct pressure for my situation?

  15. It's funny you uploaded this video today and my trucks service tire pressure light came on today . Not sure what to do about it . Should I go to my dealership ? Wonder if my warranty will cover since I have 37,s .

  16. larger tire will hold more air than stock size, you can't use the factory psi rating …if you were able to release the air from a stock tire into a larger tire it wouldn't read the same psi in the larger tire as it did in the stock size

  17. So I have 35/12.50r20 toyo open country mts on fuel hostages 20×10 my truck (ram 1500) says minimum 39 psi according to the gauge cluster so I run them between 40-50 psi you guys think that's ok?

  18. fyi the company that made the truck didn't make the tire… put the air pressure that's stated on the tire.

  19. If you pay attention, they continue to point back to running the correct tire load index on the tires too. You almost have to combine this video with the load index video to get the full picture. So, they are not technically incorrect in this video to say "run it to the manufacturer recommended PSI" because there is an assumption you're not running a tire that is under spec'd, load index wise, for your vehicle.

  20. The factory pressure recommendation works for ONLY the STOCK wheel and tire combo. The psi you need is based on the sidewall height and the tire width in addition to the weight. A lower profile tire needs less pressure because it has A. less volume to fill, and B. the sidewall can't deflect or flex as much anyway. This is why drag cars have tall sidewalls in the rear and run lower psi so they can get the grip. Also, the load rating has to do with the tires ability to handle load at higher pressures, not just the capability of higher psi. A normal SUV tire at say 50 psi can't hold nearly as much as an E rated tire at 50 (assuming same tire and wheel size for this) regardless of how they may look or drive. When you put extra weight on the tire, the internal pressure at the bottom (where it's on the ground) is higher to some degree than it is on the top where there is no load. That's because the "squeezing" of the tire is trying to counter the internal pressure. Too much, and pop. Shit is way more complicated than yall knuckleheads think.

  21. on my dually which calls for 70 on the front 65 on the rear, I'll run that pressure loaded just fine but once I'm unloaded and I don't need the capacity for a while, those tires come down to 50psi. They are way to stiff at max pressure unloaded. I always air up before hitch up though.

    another thought, even on my 9000+in dually I'll air down to 25psi when driving on sand as long as I'm not hauling anything and I'm driving slowly I don't have much worry about hear build up.

  22. I run my 35 inch mud tires 50 psi. Have ran like that on my superduty for as long as I can remember. Never any issues.

  23. I also got BFG ko2 and called them and they said to put 55 in the front and 60 in the back but would the ride comfort change?? PS mine are E rated

  24. Only way to find your correct psi with aftermarket wheels/tires is to: 1. Load your vehicle 2. Fill to a decent psi 3. Use chalk and color 2 or 3 inch section, the entire width of the contact patch 4. Drive half a mile or so and check wear pattern 5. Adjust psi accordingly to achieve nice even wear pattern

  25. A Dodge we had (2012) had a button on the dash where you could run a lower tire pressure without the light coming on

  26. As far as the tpms sensors go if there factory sensors your dealer can recalibrate them so you can run lower pressure without the light coming on or at least the ford trucks can!

  27. ALWAYS RUN MAX PSI for hauling. the max recommended PSI is how to maximize the load carry capacity and wear of your tires. The max load rating for the tire is at max psi.

  28. Always follow door tag with stock tire size. The front is considered minimum pressure, the rear is considering fully loaded. So the rear you can usually adjust down based on weight and contact patch. Helps keep from wearing the center of the tread and bouncing in the back.

    Most trucks go bigger sidewall tires so the air pressure needed is lower due to increased volume. This is the biggest problem on light jeeps.

    You can calculate from the original tire size.

    If it calls for 35 with a tire that holds 3500lb at a max of 44. 3500÷44 = 79.5 lb per psi. X 35 = 2784.

    If new tire is 4200 at 44 = 95.45lb per psi , take 2784 ÷ 95.45 = 29 lb of air in the new tires. Meets stock load rating.

  29. Hey guys been in tire business 20 years. This is how you calculate the correct air pressure for different tire sizes.

    Most trucks go bigger sidewall tires so the air pressure needed is lower due to increased volume. This is the biggest problem on light jeeps.

    You can calculate from the original tire size.

    If it calls for 35 with a tire that holds 3500lb at a max of 44. 3500÷44 = 79.5 lb per psi. X 35 = 2784.

    If new tire is 4200 at 44 = 95.45lb per psi , take 2784 ÷ 95.45 = 29 lb of air in the new tires.

    This meets stock load rating.

    If you plus sizing rims you may have to adjust the other way to increase air due to lower volume, but some are very reinforced to handle the weight, the calculations will tell you.

  30. And that’s for factory tires so dah and if you run at 60 it’s Gona best I to death 45 is good The weight is on tire for reason And no one sets the tpms do they

  31. I cooked my hankook dynopro ATM with a big lump and 3 Tires all at once because of running them at 70 psi when the tire said 80

  32. I have a 2016 tacoma. Door sticker says to run 29 PSI. I replaced my stock tires with General Grabber AT2 265/65/R17 tires. I was running 35 PSI for about 20,000 miles with no issues. Firestone Complete Auto Care tells me I need to run them at 30 PSI. After 6 months, I'm getting outer tire wear. They tell me the wear is normal! Um I don't think so. The Tech said he has the same issue on his tires. I'm like, yeah because you are probably running 30 PSI. I'm going back to 35 PSI. Don't care what the sticker says. Outer wear is not normal.

  33. I'm looking at ridge grapplers 35 X12.5X 20 max PSI is 80. My cummins rear tired need to be inflated to 80 PSI or the tpms light will come one. Can i run them at 80 PSI and expect them to last as long as they should or do you think they will wear faster?

  34. Or just call the tire company… I assume most companies will help you. I called Toyo and asked about my new Toyo ATII proper tire pressure. The nice woman took all my vehicle info and my tire info and did all the math and when finished, she said I should be running 43 PSI all around. It has more to do with the proper weight distribution per tire…I'm glad I called because there are so many different opinions out there and I was running 35 PSI which is what they were set at from the place I bought them and what the door sticker says. And like these guys said, 35 PSI is what they put in pretty much everything that goes out the door….It's up to YOU to find the proper pressure to get the most out of your tires depending on what you are doing with them. I'd believe the company that made the tires more than anyone….

  35. Tire pressure is on your inside driver door .I have a dodge ram 3500 6.7 cummins…………….. for no load 45 psi on front and back tires rides like a cadillac. If your pulling a backhoe it may be 80 psi on back…….it will run so bad when unloaded buck you and the truck to death …only do this when your loaded down heavy……then back to 45 psi front and back unloaded

  36. Chalk test on level ground is the best method for daily driving. As all vehicles are different weights. But towing should be higher and max towing should be even higher

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