correct tire pressue confused

I have a 2012Tacoma Baja edidition with the bead locked rims I just had some new tires put on cooper AT3's I asked the guy what tire pressure did he use he told me the door sticker one which says 48 pounds its a over lay sticker that was put on after. thatToyota sent the OG owner a while back now is it
right to have them that inflated just seems strange

 

IIRC, the Baja Edition came with LT tires.
If you run less than 46-48 psi, the TPMS light may come on.

If you put on different type, such as P rated, you will need to adjust accordingly.
You can reset the TPMS set pressure. It’s in the owners manual.

 

so is the pressure safe that he used in the Cooper AT3 tires or should I lower them

 

The maximum cold inflation pressure is on the tire itself.
If the pressures in the tire now is below the listed max cold pressure, you should be fine.
I can not say what the best pressure to run would be, that depends on the load range the tire is.
And I don’t know offhand what load ranges are available for the the Cooper AT3 tires.

If you tell us the load range and ply, we might be able to further help.
All this is on the tire sidewall as well.

 

That seems like way too much PSI. The minute you get rid of OE tires your proper PSI changes. If you have typical C rated tires 35 is a good starting point but you should google " tire chalk test " that is really the easiest DIY method to find the right PSI for your truck and your tires.

 

I looked on tire cant really find what you were looking for some print is micro small and at my age its very hard to see lol but these are the tires 265x70x16 OWL https://coopertire.com/en-us/find-tires/all-tires/discoverer-at3-4s

 

they list it as " standard " which is unusual but probably C rated

 

so you think I should lowerthe pressure since they are notLT tires

 

I run 35 front 30 rear, your tire light won’t come on. Our trucks are so light in the back end that 48 lbs will make it ride terrible, like a rock.
Unless your towing a trailer or have 600lbs in the bed, then up the air pressure.

 

Check out this thread I posted when I got new tires and was surprised at how much pressure was in them.

I now run 40 PSI highway, occasionally 35 if it's a long rough paved road. I often air down to 15 PSI on severely potholed FSRs and light offroading.

https://www.tacomaworld.com/threads...ire-installation-40-psi.793934/#post-28438246

 

Std or P rated aren’t load C tires, they are like 2ply.
C are LT tires 6 ply rated for loads, towing.

 

I don’t man. This thread says other wise.
See post #17. The Baja comes set at 46 psi.
Unless you reset the learned psi, the light will come on.
https://www.tacomaworld.com/threads/baja-tx-tire-pressure.291846/

They made the cooper tires OP has in different load ranges.
We still can’t really “help”.

 

On my 1st gen, I'm at 25F and 24R on HOT pressures on C load KO2. Verified with the chalk test when I first installed them. I'm about 25k miles in and the wear is flat across the face and very even.

 

it depends how you use the Truck.

When i worked the truck was loaded heavy and towed another 2000 pounds often.

I ran 60 psi in the rear and 40 psi in the front through a few sets of tires.

 

The higher the pressure = better gas mileage but typically horrible tire wear.
I would start at 38 on pressure and check the tire wear... or do a chalk test as mentioned in previous posts.

 

Went to tire rack and if you have the size stated only come in SL so here are the specs so max 44psi and I would run at 35 all around then watch tread wear.
(Note: use your phone and take a pic of sidewall then enlarge pic to read)

SPECS FOR: COOPER DISCOVERER AT3 4S

$208 Cooper Discoverer AT3 4S Tires

View Specs for All Sizes

• Size:265/70R16
• Service Description:112T Load Index 112= 2,469 lbs (1,120 kg) per tire
  Speed Rating “T”= 118 mph (190 kph) " style="box-sizing: border-box; outline: 0px; font-family: inherit; font-weight: inherit; font-size: inherit; color: var(--font-color-link); text-decoration-line: none; cursor: pointer;">Service Description
• Load Range:SL Max. Load= 2,469 lbs
  Max. psi= 44 psi " style="box-sizing: border-box; outline: 0px; font-family: inherit; font-weight: inherit; font-size: inherit; color: var(--font-color-link); text-decoration-line: none; cursor: pointer;">Load Range
• UTQG:620 A B
  $208 Cooper Discoverer AT3 4S Tires
  620
  Traction: A
  Temperature: B" style="box-sizing: border-box; outline: 0px; font-family: inherit; font-weight: inherit; font-size: inherit; color: var(--font-color-link); text-decoration-line: none; cursor: pointer;">UTQG
• Max. Load:2,469 lbs
• Max. Inflation Pressure:44 psi
• Tread Depth:14/32"
• Tire Weight:40 lbs
• Rim Width Range:7-9"
• Meas. Rim Width:8"
• Sect. Width:10.8"
• Tread Width:8.5"
• Overall Diam.:30.4"
• Revs. Per Mile:682
• Country of Origin*:US

 

Thanks a million guys for all the info much appreciated I am going to drop them to 35psi I do have a cap on the bed and 2 tool boxes in back so will watch tires after i Drop them next time I go to Wal Mart or some other place with a tarred parking lot will do the chalk test my drive way is gravel oh by the way I am 70 yearsold but I still enjoy trucks lol

 

Where are you located? There may be a few members in your area willing to help you

 

I am located in Mass. Brimfield right by palmer as soon as the rain lets up I am lowering to 35 PSI and will check Tirewear My next Project is to try to get the rear sag out of bed since i have a cap on it I just ordered some 5100's the OG owner took the original shocks out the ones with the canister attached put in some other shocks no name then I may have to do a single AAL also Truck is in great shape for a 2012 I get a lot of compliments on it for the record LOl my first Toy was a 78 FJ40 landcruiser had a warn winch in front an back with 11.50 tires was a great truck but some body liked it more an got stolen while christmas shopping my next toy was a 1987 Toy 4x4 truck was a great truck did some good off roading with that one till the frame rotted out after them a fewFords now back to a Tacoma I will say this is prob the most comfy truck I have driven all my trucks have been 4x4 since i live on a mountain lol with out 4x4 you walk the road home

 

https://www.tacomaworld.com/threads/western-massachusetts-tacomas.168431/
Ask here in this thread, you should be steered in the right direction. There are a lot of good people in the north east section