Inch-Up Tire Pressure Calculator

Calculate air pressures of plus sizing tires.

If you change to larger wheels with lower profile tires.

Change tire pressure also.

Because...

To prevent having a flat tire.

To save fuel consumption.

Let's enjoy drive safety.

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This app can calculate any standards below.

JATMA_Japan STD

ETRTO_Europe STD

XL_ExtraLoad STD

RFD_Reinforced STD