How to Set Proper Tire Pressure In Your Truck With the Chalk Line Test

Рет қаралды 28,217

Жыл бұрын

Looking to improve tire wear and ride on your truck with aftermarket tires? In this video we explain tire pressure theory, load inflation tables, and walk through how to use the chalk line test to dial in tire pressure for your exact truck!
#howto #tirepressure #chalklinetest

Пікірлер: 55

@CJCOffRoad Жыл бұрын

Please keep in mind every truck and tire is different, so you need to consult your tire manufacture's specs. Have a tire pressure light? Here's the fix: AEV ProCal for Ram: www.cjcoffroad.com/search?type=product&q=ProCal Alpha OBD for Ram: www.alfaobd.com FORScan For Ford: forscan.org/home.html

@user-rk2ww2cm4v Жыл бұрын

I didn't hear a word you said... just staring at that beautiful beast of a PW the whole time.

@joebloe1152 28 күн бұрын

I have never heard of doing this. I will be doing this to figure the pressure needed my truck. Thanks for the video.

@CJCOffRoad 28 күн бұрын

Glad to help

@HtownOffroad Жыл бұрын

This is why you guys are the best! My customers always freak out when I say 50 on the front and 40 on the rear. And it looks like I need to go take a second look at the tread! Because I can go lower

@Crumb_Trails Жыл бұрын

I ran 25psi on the street with my 37x12.5 BFG KM2s on '13 JKU. And 8psi off road. This is a great method

@DM-tf6mk Жыл бұрын

Great video and information!

@Jdwg1972 Жыл бұрын

Thanks for the tips, Cole!!

@timothygarreans3025 Жыл бұрын

VERY Helpful! Thanks

@Pearson_vii Жыл бұрын

Patiently waiting for some whoop pounding vids 😊

@waynem11 Ай бұрын

Good info, Thanks

@vince5506 Жыл бұрын

Appreciate the video! Btw, can you tell me what tire gauge you are using? Looks nice.

@rocklow243 4 ай бұрын

What i like to do is use that load inflation calculator. My previous tire was a 245/75r16. I went to a 285/70r17. I got on toyos website and i found the weight capacity of the stock tires at the stock psi. I then went to the new tire size and found the tire psi that matches the factory load capacity. Which in turn dropped my fronts 12 psi and rear 20 psi. So with the new tire psi i can have the same load capacity as factory. I can go lower for sure but i do like to know my factory rating so when i tow max capacity i know what psi to run.

@Rommer2258 Жыл бұрын

This is a good video on the pressures. My 4th gen wagon with the same tire is 35/28 for a perfect line across. Which is wild to think about. I like to air down to 25f and 20r off-road. The Toyo is great however it seems that the newer us made toyos pop easier than the older japanese made ones.

@Rommer2258 Жыл бұрын

@Such Is Life 37x13.5r17 Toyo MT

@st8ton Жыл бұрын

So did this truck end up with 36/32 f/r like the dash read?

@navseal345 Жыл бұрын

👌

@dillonladuke1978 Жыл бұрын

What’s the backspacing on those trailready wheels? I’m looking at running 17x8.5 with a 5.5 backspace and a 37x13.50 Nitto ridge grappler but I’m trying to keep the tires flush with the fender flares on my 5th gen PW.

@CJCOffRoad Жыл бұрын

This particular truck is 0 offset and 4.75" backspace, but you want 5.5" to be flush with the fender.

@dlangpap 2 ай бұрын

Great video. Why do we need to test 4 tyres though? Isn't it enough to check one front and one back?

@CJCOffRoad 2 ай бұрын

We always like to check all four just to be safe, but yes you can do just one front and one back.

@bennorman106 2 ай бұрын

Is there any information to be said about airing up the tire to maximum pressure when seating the bead and potentially differences in the way the tire balances at different air pressures? Should they be re-balanced once you find your final pressure setting, especially if they were initially balanced at maximum pressure?

@CJCOffRoad 2 ай бұрын

Ideally pressure shouldn't really impact balance unless something is wrong with the tire.

@mcjoneszin Ай бұрын

How to reset the low pressure alarm on Ram to allow for something in the 40 to 50 range?

@CJCOffRoad Ай бұрын

We discuss it in this video, but you can use Alpha OBD, or the AEV Pro Cal modules we sell on our website. It's actually super simple!

@elinca2473 7 ай бұрын

Okay wait , I thought if the chalk is darker in the center then the tire is under inflated and if darker on the outside over inflated.

@peterkoska6876 11 ай бұрын

I have 37x13.50R17E on 17"x9" on my '23 Super Duty, with snow plow prep package. I ordered online & they showed up with 40 psi in them. I ran them up 60 up front 62-63 in the rear. Right now it seems over inflated, "ridging out" & stiff. They are rated for 65 max psi. I was just trying to meet stock tire pressure, 40 seemed too low, though I can't say they didn't ride good. My truck once completely outfitted with tools, topper, aftermarket bumpers, & likely airbags will be about 9800 lbs. Right now it's not much heavier than stock, maybe 300lbs over. Any recommendations? Is 40 psi fine? 60-63 psi too high? I know the 9" wide rim will give the 13.50" a little more pucker than a wider rim.

@CJCOffRoad 11 ай бұрын

60 psi is way too high! That said, every truck is different, so follow the tutorial outlined in this video and you'll have an answer for what your exact tire should be at front and rear.

@peterkoska6876 11 ай бұрын

@@CJCOffRoad Sure thing. I dropped it down to 50 in the front & 55 in the rear & am look to examine the chalking my crushed concrete drive way naturally affords.

@CJCOffRoad 11 ай бұрын

We'd recommend no higher than 45 front 40 rear as a start, but you'll likely land around 40 front and 30 rear.

@peterkoska6876 11 ай бұрын

@@CJCOffRoad Ok. I always thought, assumed more psi up front. I did a quick math equation & got about 49 lbs per psi based on 65 psi gave me 3195 lbs per tire. Thus if the truck weighs in at 7500+ empty, maybe 500 lbs over stock, then 40 psi up front & 45 rear gives me about 8300 lbs. Thanks for the help. I'll make some further adjustments. Then when I get my tools & topper loaded up I'll check my weight & adjust.

@mtemp208 Жыл бұрын

I pulled up the toyo chart for 37x12.50r18 AT3s and 25psi equals 2095lbs rating per tire. Ignoring for conversation sake front to rear weight distribution that’s 8400lbs of support which is what my truck weighs. That would put me at an average of 25psi per tire. That’s WAY less than CJC or Carli has ever recommended. Am I missing something here? That would probably equate to something 28psi front and 23rear 😮

@CJCOffRoad Жыл бұрын

The load inflation table doesn't lie. We usually say 45 front and 40 rear as a start since that's a pressure anyone can run and tow, but the load inflation table and chalk line test give you a true answer for your exact tire.

@MINIHAHA1 Ай бұрын

Great information. I have 33x12.5 x18 on a chevy silverado. My tire says 65psi cold seems alot could I run 40 psi without any issues?

@Rangerdnger Жыл бұрын

They talk about running lower tire pressures to make the suspension kits ride better. You can do the same exact thing with stock, suspension run low tire pressures and save yourself a bunch of money and buying the suspension kit.

@JustDiesels Жыл бұрын

Yeah… it’s not the same. Go hit a whoop section with stock suspension and soft tires and tell me how it feels haha.

@Rangerdnger Жыл бұрын

@@JustDiesels I don't hit many whoop sections on the highway. Actually none at all, I hit a lot of wash boards on gravel back roads and my suspension kit handles wash boards terrible just like stock suspension.

@brokenwrench404 Жыл бұрын

@@JustDiesels he’s not wrong. There’s absolutely no reason to be running 65-80psi unloaded on a stock truck. Especially if you’re in SoCal with our crappy freeways. We did this at the SoCal city I was a fleet mechanic for. But if you want the best of both world a suspension system will really soften things up. Especially on 3/4 ton and up trucks

@brokenwrench404 Жыл бұрын

@@Rangerdnger do the chalk method shown here to find that sweet spot unloaded and then air up when you tow 👍🏼

@Rangerdnger Жыл бұрын

@@brokenwrench404 I do and it's a pain in the ass I tow quite often

@charles17508 6 ай бұрын

Im running a 150 ford on 35×12.50×18 38psi fronts and 30 in back toyo rts ?

@gman0812 2 ай бұрын

Did you figher out the correct pressure? I have a 2023 f150 as well 4x4 on 35sx18 I don’t haul, mainly cement princess but I am confused about the pressure

@charles17508 2 ай бұрын

@@gman0812 I'm running 40 in front and 37 in back

@gman0812 2 ай бұрын

@@charles17508 Thanks!

@2600ac Жыл бұрын

Curious - I have a full Carli pintop with king shocks on a 22 superduty - 37x13.5x17 nitto ridge grapplers 0 offset - what PSI should these tires be set at?

@CJCOffRoad Жыл бұрын

It all depends on the weight of your exact truck and setup. Just grab some chalk and you'll have the answer!