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 |
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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: