Inflation Pressure

vINCe_Inc

Member
Car
2009 Infiniti FX35 AWD
I used to drive with a stock setup for my 18" tires at 32-35 psi.
Now that i have switched to 20" parada specx, the garage inflated it to 37-38 psi.

What should the correct pressure be ?
 
I have run 35psi on my 20" Yokohamas for the last 4 years and they are wearing evenly and the ride is satisfactory.
 
The number on the sticker placed on the driver's side door jamb is usually the amount to fill. Although that's just a suggestion. You can adjust up or down to suit your comfort/wear preference.
 
33psi is too soft for me, like I said I find 35 is just right.
i always run my cold pressures a couple psi higher than the stock recommended pressures on all my vehicles.
 
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Tire pressures vary according to manufacturer and size of tire. The tire pressure listed on the side walls of the tire is the maximum pressure so that being said it is recommended to run 4 to 6 psi below sidewall listed pressure.
 
I recommend 35-36 front 33-34 back. For spirited driving: 38 / 36 and track I use 40-42/38-40 (weather dependant as you need more air to keep the sidewalls from flexing too much).

My 2 Canadian cents,
-Yeti
 
yup I run higher than stock pressures too. usually 35+ in the rear and 33-35 in the front.

I run them different due to the staggered setup means I have more volume and surface area to accommodate for in the rear tires.

Realistically anywhere in the range of 33-37 and you should be fine, 4 PSI is not that big of a difference. Just try to make sure from side to side you are pretty even.
 
I noticed the dealer would run them a bit higher at 35/36 and then the first set of tires wore out more so in the middle. I keep it at factory and notice even wear in my current set of tires.
 
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