Need help, how much air pressure?

[Dmov]

i'm having 275/70-18 kelly Safari TSR's installed on my truck right now. I bought them from my tire vender i sell Big Rigs 18 wheelers.

The shop putting on the tires said the TPMS sensors won't read through the tire and they are quiet sure what air pressure to put in them.

These tires are very similar to Goodyear duratracs, anyways what tire pressures are you guys running, these are 33" tires.

Thanks in advance...

[MrKwn]

I have 265/70-18 and I'm running 36 psi all four corners.

[warsw]

Originally Posted by Dmov

i'm having 275/70-18 kelly Safari TSR's installed on my truck right now. I bought them from my tire vender i sell Big Rigs 18 wheelers.

The shop putting on the tires said the TPMS sensors won't read through the tire and they are quiet sure what air pressure to put in them.

These tires are very similar to Goodyear duratracs, anyways what tire pressures are you guys running, these are 33" tires.

Thanks in advance...

Are they a "C" or an "E" rated tire? I also run 275/70-18s in an "E" rated tire. I am currently running 42psi front and 40psi rear. I will probably run something closer to 50psi in all 4 this summer when I start hauling my travel trailer around.

[School of Hard Knocks]

Originally Posted by warsw

Are they a "C" or an "E" rated tire? I also run 275/70-18s in an "E" rated tire. I am currently running 42psi front and 40psi rear. I will probably run something closer to 50psi in all 4 this summer when I start hauling my travel trailer around.

The Kelly website lists them as "E". No tire pressure info though.

Kelly Tires | Safari TSR

[thompsonreido]

I run 40psi all around in my Duratrac's


Sent from my Autoguide iPad app

[School of Hard Knocks]

Originally Posted by Dmov

i'm having 275/70-18 kelly Safari TSR's installed on my truck right now. I bought them from my tire vender i sell Big Rigs 18 wheelers.
The shop putting on the tires said the TPMS sensors won't read through the tire and they are quiet sure what air pressure to put in them.
These tires are very similar to Goodyear duratracs, anyways what tire pressures are you guys running, these are 33" tires.
Thanks in advance...

This is a late response but I emailed the manufacturer about your tire pressure question. I got this response which is pretty useless. Sorry. I tried. Hope you got it all squared away.

Response:

Operating air pressure is determined by the vehicle manufacturer.

If you're using the same size tire that came as original equipment on your
vehicle, the proper air pressure is indicated on the door placard or owners
manual of your vehicle.

The air pressure indicated on the sidewall of each tire is the inflation
pressure required to carry the maximum allowable load for that tire.

Vehicle manufacturers have invested considerable time and testing to
establish an air pressure that will provide a smooth comfortable ride in
addition to an even treadwear pattern.

Our recommendation would be to stick with the air pressure established by
your vehicle manufacturer.

Thank you for your inquiry through our web site.

Jenn Chapman - Consumer Relations Rep

[rockstate45]

Try between doorjamb and like 55 psi. Do the chalk line test, and go from there to find a balance between tread life and comfort.

I run my Nittos in a 295/70/18 at like 42 or 45 and 40 in the rear.

-rockstate

[School of Hard Knocks]

Originally Posted by rockstate45

Try between doorjamb and like 55 psi. Do the chalk line test, and go from there to find a balance between tread life and comfort.

I run my Nittos in a 295/70/18 at like 42 or 45 and 40 in the rear.

-rockstate

Good advice rs45. Here's a link: How to Chalk Tires | eHow.com