To keep the same load index as stock 215/65/16 at 35 psi 1565lbs
the 255/50r17 Nittos would require 28psi giving you a load index of 1572.
sounds low, but its a larger tire that can carry more on less psi. I still would run 32-35 myself anyway.
martimus said:
The only issue I've ever had with checking the recommended pressure on the door is that the listed recommendation is for the STOCK tires. I replaced my stock tires with 255's not long after buying the car. My thought is that the recommended pressure for my Nitto's may not necessarily be the same.
Adrenal said:
I had a tire (on my Mark VIII) that would lose about 2 pounds a day. I took it to a tire shop and they put it in the dunk tank and there was no air leaking (at least that you could see). The tire kept losing air so I took it back a few days later and he took the tire off and broke the bead, reinflated the tire and it has never lost air since.
He said that sometimes certain types of rims will develop that problem and the only way to correct it is to re-mount the tire on the rim.
I hope this made sense.
Yeah, aluminum wheels are famous for this. Best thing to do is not just reseat the bead, but remove tire, buff wheel, and put a bead sealer on it, remount tire. If one starts, you can usually bet others are not far behind. Usually takes about 3 years for this to develope from new. And those kind of leaks may only happen when the weight of the vehicle is on the tire/wheel. Explaining why in a dunk tank no leak was found.