Ok, here is the scenario.
Stock tires on my ZR2 are 265/65R17 with a load rating of 112S SL 2,469lbs @ 51 psi. The OEM suggests 35psi all around which I know lowers the load carrying capability of the tire...but to what?
I want to run summer tires 265/50R20 to reduce noise and un-sprung mass (yes, the rim and tire combo is lighter than stock). The load rating for the tire I am looking at is 111XL @ 51psi which I believe is around 2,400 lb capacity.
So...what pressure should I run the new tires at to keep the load capacity equal? I run the suggested 35 psi in the stock tires...I am thinking if I run 40 psi I would be safe. I know there is a way to calculate this, but I can't seem to find it.
Stock tires on my ZR2 are 265/65R17 with a load rating of 112S SL 2,469lbs @ 51 psi. The OEM suggests 35psi all around which I know lowers the load carrying capability of the tire...but to what?
I want to run summer tires 265/50R20 to reduce noise and un-sprung mass (yes, the rim and tire combo is lighter than stock). The load rating for the tire I am looking at is 111XL @ 51psi which I believe is around 2,400 lb capacity.
So...what pressure should I run the new tires at to keep the load capacity equal? I run the suggested 35 psi in the stock tires...I am thinking if I run 40 psi I would be safe. I know there is a way to calculate this, but I can't seem to find it.