Curiosity question for the guys out there. The G35 is rated at 35 PSI for all tires on the vehicle. I have falken fk453 (20's) on my car and they have a max PSI pressure of 50. I usually pump them to 45 PSI...I recently came from a tire shop and they told me to never inflate them over 35. I just got them swapped and it seems rather low at 35...if they lose a bit of air, they're done, so I'm paranoid and would rather inflate them to maybe 40-45.

I'm curious, what do you all think?

 

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The standard is usually 32 psi. How much more air you want in your tires will really depend on the load, but I wouldn't really worry about that for a DD.

Just understand that overfilling a tire means less contact patch is connected to the ground, meaning you will have less traction when you need it, and your car will be more prone to hydroplaning.

Overfilling the tire just a bit can help by reducing traction and rolling resistance to help improve gas mileage which may be enticing if you commute long distances, but you are still giving up traction and the now rounded shape of the tire will still be more prone to hydroplaning.

Do not fill your tires up to maximum.

 

Thanks man, solid post. I thought the standard of 32-35 PSI was for the OEM wheels and tires only.

 

I would not go below Infiniti recommended pressure, nor exceed the tires max psi. Need at least oe pressure to handle vehicle load properly. Anything in between the two would work depending on your desired comfort/handling preference.

 

Go aallll the way to 50psi, bugaboo. I always max out my psi. Best tire wear, best mpg.