Tire RPM-MPH charts     
 Choose your tiresize (or the one nearest) , go down to your final drive-ratio,then to the right to see what MPH you go at what RPM.

mph chart
 
10"-145 165  1000rpm  2000rpm  3000rpm  4000rpm  5000rpm  6000rpm  7000rpm  8000rpm        
2.95 : 1      19.31    38.64    57.96    77.31    96.63   115.9    135.2               

3.10 : 1      18.44    36.88    55.33    73.77    92.22   110.6    129.1               

3.21 : 1      17.76    35.52    53.28    71.04    88.8    106.5    124.32               

3.44 : 1      16.56    33.14    49.71    66.26    82.84    99.36   116      132.5        

3.65 : 1      15.61    31.23    46.85    62.47    78.05    93.7    111.1    125        

    
       
12" -155 160cm   1000rpm  2000rpm  3000rpm  4000rpm  5000rpm  6000rpm  7000rpm  8000rpm        

2.95 : 1          20.2     40.41    60.62    80.85   101      121.21   141.4               

3.10 : 1          19.28    38.58    57.87    77.19   96.44    115.7    135               

3.21 : 1          18.56    37.14    55.7     74.27   92.84    111.4    129.9               

3.44 : 1          17.32    34.65    51.99    69.3    86.62    104      121.2     138.6        

3.65 : 1          16.33    32.6     48.90    65.5    81.5     97.9     114.3     130.6        
    
      

13" -175 162cm   1000rpm  2000rpm  3000rpm  4000rpm  5000rpm  6000rpm  7000rpm  8000rpm        

2.95 : 1          20.45    40.93    61.41    81.8    102.3    122.8    143.2               

3.10 : 1          19.53    39.06    58.62    78.12    97.68   113.9    129.8               

3.21 : 1          18.81    37.61    56.41    75.22    94.01   112.8    131.6               

3.44 : 1          17.54    35.09    52.59    70.17    87.74   105.2    122.8    140.3        

3.65 : 1          16.53    33.07    49.61    66.13    82.65    99.23   115.7    132.2        

    

  These numbers are  eoretical, calculated with  1 : 1 dropgears and 4speed box.   MPH   0.621 = KPH.