Upsize Calculators

Original Tyre:

Your tyre size: / R

Result:

New Tyre:

Your tyre size: / R

Result:

Formula of Tyre Pressure When Change the Tyre Size:

Original Tyre Max Load Rating (lbs) Original Tyre Max Pressure (P.S.I.) OEM Recommended Tyre Pressure ( P.S.I.)

New Tyre Max Load Rating (lbs) New Tyre Max Pressure (P.S.I.)

New Tyre Air Pressure ( P.S.I.)

Rim Width Calculater: (Add or Minus Max 0.2 digits for Rim Size)

Tyre Side Wall Ratio From 80 to 60:

Tyre Size (mm)

Rim Size (Inch):

Soft Ride (comfort) 70 % Med Soft Ride (comfort) 75% Quick Sterring Response, Hard Ride, (sporty), (Performance) 80%

Tyre Side Wall Ratio From 55 to 50:

Tyre Size (mm)

Rim Size (Inch):

Soft Ride (comfort) 75 % Med Soft Ride (comfort) 80%

Tyre Side Wall Ratio From 45:

Tyre Size (mm)

Rim Size (Inch):

Rim Size

Tyre Size width:

Comfort: Hard: 80% for low profile:

Circumstance & Diameter calculator:

Original Tire size New Tire size
Width: Ratio: Rim Size: Width: Ratio: Rim Size:
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Diameter mm Circumstance mm Diameter mm Circumstance mm
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Diameter difference mm : Circumstance difference mm : Percent
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Original tire size traveling distance: Original tyre size car km reading :
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New modify tire size traveling distance: Modify tyre size car km reading:

Air Pressur calculate by Car weight:

Gross Weight of Car(kg) Tyre Width(mm)

Air Pressure (kg) bar kg psi

Tyre width: Air pressure: New tyre width:

New air pressure

Rim width: Air pressure: New rim width:

New air pressure

Converter:

Kg: Psi:

Psi: Kg:

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