By vehicle
By size
Tyre size Comparision Calculator
Your Tyre Size
UPSIZE Tyre
Your Car TyreUpsize Tyre% Change
Tyre Diameter0240
Static Radius0-00
Dynamic Radius0120
Circumference0740
Rev / Kms0134370

Tyre size comparison is refereed while upgrading tyres.

Example :

Tyre is originally fitted with 175/65R14 tyre and if to upsize some one put 185/60R15 then he should refer various dimensional changes which result change in circumference while leads to change in odo reading and speedometer, and also the radius which changes Ground clearance and vehicle height. Change in tyre radius due to mentioned tyre size = 10 mm Change in speedo and odo =3%

Tyre DiameterThis is the Geometrical diameter of an inflated tyre at the outermost surface of the tread, or twice the inflated section height of tyre plus nominal wheel rim radius. Tyre diameter is dependent on Tyre width, aspect ratio and wheel rim diameter. In service condition tyre diameter increases marginally due to carcass relaxation. The tyre diameter acts just like another gear in your vehicle and matters a lot in defining the economy and vehicle acceleration.
Static RadiusStatic rolling radius or "Static radius" is the distance between wheel center and the point on the circumference of a tyre taking compression into account. It defines vehicle stance and ground clearance in static condition. Due to tyre compression at corresponding load ,tyre static radius reduces from normal geometrical radius.
Dynamic RadiusDynamic rolling radius is the actual radius of tyre when the vehicle is moving. This takes into account the centrifugal force that acts upon the tyre during revolutions.
CircumferenceThe linear distance traveled by a tyre in one revolution. It is derived from from Dynamic rolling radius as it represents the true radius of tyre during motion. It is useful to compute tyre speedometer and odo meter calibration errors.
Rev / KmsMeasured number of revolutions for a tyre traveling one kilometer. This can vary with load and inflation pressures.

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