Hi All
Just upgraded the wheels and tires on my 03.5 Sedan to 18" SSR Comps and Goodyear Eagle F1 GS-D3's in 245x45x18. Does anyone know what the recommended tire pressure would be for this plus sizing upgrade? I ran straight 32psi in my stock Turanza's, and they still wore on both outside edges (as if they were under-inflated).

Just don't know if the tire pressue should be increased or decreased with these new tires.
Thanks

 

typically it should remain the same, but the factory pressure is rather more for
comfort than anything else. If I was you, I would use 35psi during the summer
and 38psi during the winter (40F and below).

 

Try checking on the sidewall of the tire for the recommended psi.

Also, you may want to check your alignment if you're seeing premature wear on either the inside or outside section of the tire.

 

The sidewall only shows the maximum safe HOT pressure.

A good basic rule of thumb is 80% of max [51 x 0.8=41 psi cold-----44 x 0.8= 35 psi cold]. For years tires were lab tested at 35 psi......but now with 51 psi tires the debate is still on going for a standard test pressure.

But each design, model, size, and brand reacts differently with the same static [sitting still] and dynamic cornering load.

 

Hey Gary, great choice. Can you post some pictures of your car. I have been thinking about these wheels for a while (wanted stagger setup).

Also, how much the wheel weight? from what I understand these are the lightest wheels I can find other than magnesium wheels. Thanks.

 

I'll post some pics this weekend after I wash it again. The wheels weigh 15.4 lbs each!! I really didn't expect there to be as much of a difference in the handling with the new setup as there is , but geesh, it's really great. Seems like some of the understeer has ben mitigated by the wider tires, thus less corrections in the turns. Overall, it's way smoother.

 

I have same eagle tires. I'm running at 40 lbs Sidewall says not to inflate over 50 lbs.
I have great cornering and the outside of tires do not seen to be wearing even with some hard cornering. Only problem is I feel every pebble in road which is not really a problem. But I am at this post trying to find what others have found about how many pounds to run.
'03 sedan A/T

 

Personally, I went +1 on my sedan [18x8.5 w/ 245/40R18] and I finally have settled on 36 psi cold for warm weather [summer] and 38 psi cold for winter weather. That is what I would consider as my "comfort" inflation pressures.