20in Tire Pressure

I just "upgraded" my trucks wheels/tires with a set of Silverado SS Powder coated 20in wheels with Eagle LS P275/55R20. The installer set the tire pressure at 35psi and I was wondering what pressure that the SS calls for and what other 20in wheel owners set their tire pressure at??? Thanks in advance.

The tires/wheels look really great and I can update my photos if anyone is interested.

ya, let's see em.
I would put in what ever pressure is stated on the tire's sidewall.

My wheels are the same set up as an SS. My rims are the factory 20" x 8.5" with the P275/55/R20 Goodyear Eagle LS tires. The tag in the door says 30 psi COLD and the load, passenger and payload, is 1250 #'s.

I would put in what ever pressure is stated on the tire's sidewall.

Sidewall pressures are MAXIMUM pressure levels that are not to be exceeeded even under heavy payloads - and have nothing to do with driving pressure levels.

The label in the truck is what is the engineered preferred pressure levels.

On 20 inch wheels with Goodyear Eagle street tires on an ext. cab 1500 - the preferred pressure level is 30 pounds pressure cold both front and rear. The MAXIMUM air pressure the tires should ever have under any load circumstances is 36 pounds cold.

When I got my truck - the dealership had 35 in each tire - while the truck label said 30. When I reset the levels to 30 - it was a substantial improvement in smoothness and handling.

P.S. Nineball - I think your tire/wheel combination is very attractive on your truck.

White Lightening

Sidewall pressures are MAXIMUM pressure levels that are not to be exceeeded even under heavy payloads - and have nothing to do with driving pressure levels.

The label in the truck is what is the engineered preferred pressure levels.

On 20 inch wheels with Goodyear Eagle street tires on an ext. cab 1500 - the preferred pressure level is 30 pounds pressure cold both front and rear. The MAXIMUM air pressure the tires should ever have under any load circumstances is 36 pounds cold.

When I got my truck - the dealership had 35 in each tire - while the truck label said 30. When I reset the levels to 30 - it was a substantial improvement in smoothness and handling.

P.S. Nineball - I think your tire/wheel combination is very attractive on your truck.

White Lightening

You learn something new everyday.

Thanks for the compliment as well. You made my truck blush:tongue:

Nineball,

If I still had the old body I would hunt that truck down and comendeer that hood, then the tires....

White Lightening,

Did you see any difference in your MPG when you changed????

My 275/40/20's say max psi 44, the people at discount fill em to around 35-37, but that's not stiff enough of a feel for me so i fill them to around 40-42.

White Lightening,

Did you see any difference in your MPG when you changed????

No. It was something I looked for. The story goes back just a bit. When I test drove a Limited Appearance package truck - it had been very very very smooth. Then the truck I bought - also on the test drive - again very smooth. Both test drives included rough washboard type roads of course :)

But then on the long drive home from the dealership (about 120 miles) - it just seemed "not so smooth". A couple days in town driving and I then started checking the air pressures. I noted no MPG negatives by reducing the pressures - but an instant change in smoothness, responsiveness, and comfort (all to the positive). Also did not notice any difference in turning resistance (like in parking lots etc.).

P.S. Hey Jethro - when are you going to start showing more Sleeper pictures in that gallery :smile:

White Lightening.

P.S. Hey Jethro - when are you going to start showing more Sleeper pictures in that gallery :smile:

White Lightening.

I have been trying for the last 2 days and for some reason I can't get them posted....