Older ZR2 owner wanting new tires for his ‘22 ZR2 - need help

[AXE]

I put falken wildpeaks 4w on. Stock size e load. They were so much quieter than the oem Goodyears. Ride is good at 50 psi. I think they look pretty darn good too!

Why do you run them at that high pressure? Is that recommended?

 

[Chevyman2022]

Why do you run them at that high pressure? Is that recommended?

That is what was recommended

 

[AXE]

That is what was recommended

By whom? Standard pressure for a 1500 is usually in the 34-38 psi range. Obviously more if you loaded with cargo or towing.

 

[OC ZR2]

What I've learned is that E rated tires take less pressure for normal use. I went from C (stock) to an E tire and dropped 4+ pounds. Used that tire pressure load rating site and it gave me a great starting point. Maybe each brand is a bit different?

 

[Chevyman2022]

What I've learned is that E rated tires take less pressure for normal use. I went from C (stock) to an E tire and dropped 4+ pounds. Used that tire pressure load rating site and it gave me a great starting point. Maybe each brand is a bit different?

By whom? Standard pressure for a 1500 is usually in the 34-38 psi range. Obviously more if you loaded with cargo or towing.

The tire manufacturer suggested 55 and my local guy that puts all my tires on suggested 50.

 

[OC ZR2]

Have you tried out that tire load calculator for PSI? It would be interesting to see if it coincided with what they say, just for curiosity.

Tire Pressure Calculator

Easy to use tire pressure calculator. Use our tire pressure calculator to calculate the new tire pressure needed when changing tire sizes.

tiresize.com

 

[Chevyman2022]

The tire manufacturer suggested 55 and my local guy that puts all my tires on suggested 50.

I’ve seen psi recommendations from 35 to 60 for e load tires (unloaded). I felt the ride was always good with my previous e load tires so that’s what I put in now. I could always do the chalk test

 

[OC ZR2]

That's true, and if you like the ride who am I to say lol. I tried my E rating tires up over 44 and it sucked, followed every line in the road. I chalk tested and found it to be 33-34 now with the 35 x 17 E's I have now, also the calculator recommended as well. Bump it up a few when loaded.

 

[AXE]

Look on the side of the tires and see what it says max psi. If you are running 50 psi cold, they are 54-55 psi warm. That seems like it would be hard and cause the tires to be less compliant and looser, especially on unsaved surfaces.

I run my Toyos at 35-37 psi cold, so they get up to to 40 psi running. That seems plenty stiff.

I run my 2500HD tires at 50-53 psi cold unladen. It calls for 55 psi. I only run max when I'm loaded and towing.

 

[Chevyman2022]

That's true, and if you like the ride who am I to say lol. I tried my E rating tires up over 44 and it sucked, followed every line in the road. I chalk tested and found it to be 33-34 now with the 35 x 17 E's I have now, also the calculator recommended as well. Bump it up a few when loaded.

Maybe what I think is a good ride could be better with less psi.

 

[AXE]

I ran mine through the calculator. I'm not sure they have the load specs right on my Toyos (they are 4000 lbs), but it came back with a slightly lower psi recommendation.l than stock I've tested different psi and just went bac to the GM recommendation on the door jam.

 

[OC ZR2]

My door shows 38?

 

[AXE]

Same!