Tire pressure for larger tires

[Citykid]

Hi everyone, new guy here to the board.  I just picked up a 2017 SIlverado (love it!) with 20" wheels and 33" tires.  Can anyone give me a proper tire pressure for the tires seeing how they'er not stock so I figure the info on the truck is no longer correct.  The actual size of the tires are LT305/55R20.

Thanks!

[m3n00b]

Hi everyone, new guy here to the board.  I just picked up a 2017 SIlverado (love it!) with 20" wheels and 33" tires.  Can anyone give me a proper tire pressure for the tires seeing how they'er not stock so I figure the info on the truck is no longer correct.  The actual size of the tires are LT305/55R20.

Thanks!

I like 40-45 on my 35x12.5 18 toyo rts but anywhere between 35 and 50 seems to be the norm for off-road tires.

 

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[dieselfan1]

Here you go Kid...

https://tiresize.com/pressure-calculator/

It's actually pretty accurate.

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[flyingfool]

i run 30-32 psi on stock 18", everyone thinks its too low. but after driving on the highway they pump themselves up to 35 psi due to natrual heating from driving.

[Citykid]

Thank you crew!

[Citykid]

F Y I, this is what I got:

OEM Size (P265/65R18 SL) Load Capacity: 2469 lbs. @ 35 psi.

Passenger type tires are fitted with a 10% overage in load capability when used on SUV's, Light Trucks, and Vans because of the difference in load handling. This load overage can be removed when changing to an LT type tire.

That brings the effective load capacity to acheive down to 2245 lbs.

 

New Size (LT305/55R20 E) Load Capacity: 2273 lbs. @ 41 psi.

[NWI Denali]

10 hours ago, flyingfool said:

i run 30-32 psi on stock 18", everyone thinks its too low. but after driving on the highway they pump themselves up to 35 psi due to natrual heating from driving.

Every tire increases in pressure with road heat. You are supposed to set pressures cold, and that's what the numbers on the door jamb sticker correlate to.

 

OP, for a load range e tire like that i would start at 45psi and go from there depending on your ride quality.