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Tire_Size_Calc

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					Tire size difference calculator                              Brockway Engineering, LLC


Stock Tire   Enter Tire Size:                                              UNITS
1st Number   Width              225                T1 =                225 (in mm)
2nd Number   Sidewall            70                T2 =                 70 (in % of T1)
3rd Number   Rim Size            15                T3 =                 15 (inches)

                                                   TT2 =            15750           -----
                                                   TTT2 =            1575 (mm * 10) -----

                                                   TT3 =              3810 (mm * 10) ------

                                      Tire Diameter T4 =              6960 (mm * 10) ------
                                                    T5 =               696 (mm)      ------

New Tire     Enter Tire Size:                                              UNITS
1st Number   Width              235                NT1 =               235 (in mm)
2nd Number   Sidewall            60                NT2 =                60 (in % of T1)
3rd Number   Rim Size            15                NT3 =                15 (inches)

                                                   NTT2 =           14100           -----
                                                   NTTT2 =           1410 (mm * 10) -----

                                                   NTT3 =             3810 (mm * 10) ------

                                      Tire Diameter NT4 =             6630 (mm * 10) ------
                                                    NT5 =              663 (mm)      ------

                                                   Change in Vehicle Speed

                                                   V1 =             33000             --------
Speedo is off by:                5%                V2 =                 5%            ---------
www.brockwayengineering.com




T1*T2
TTT2/100

T3*254         to get in to mm * 10

TT3+2*TTT2     Find overall Tire Size
T4/10          Find overall Tire Size




T1*T2
TTT2/100

T3*254         to get in to mm * 10

TT3+2*TTT2     Find overall Tire Size
T4/10          Find overall Tire Size



(NT4-T4)*100
V1/T4

				
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posted:11/28/2011
language:English
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