TwinTurbo.NET: Nissan 300ZX forum - like this, but for stock tires:
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Subject like this, but for stock tires:
     
Posted by elizium on June 05, 2001 at 2:46 PM
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In Reply To Yea but how'd you get the numbers? :) (n/m) posted by Jackie Chan on June 05, 2001 at 02:08 PM
     
Message Wheel diameter for 225x50x16 is calculated

(widthxprofile/50)+(wheel diam*25.4) = 631.4 mm

therefore circumference (pi x diam) = 1982.6 mm

which is equal to 0.001232 miles

to get top speed, rev limit x gear ratio x final drive x circumference

in this case, for an NA in 2nd gear and 7200 rpm would be

7200 x 1.93 x 4.08 x 0.001232 miles or 69.84 miles per hour.

(for other tire widths change above numbers)

(for other gears or TT the following is relevant:

gear ratios:

1st 3.21
2nd 1.93
3rd 1.30
4th 1.00
5th 0.75

final drive
NA: 4.08
TT: 3.69

-------

Chris

95 TT red Stage >I

     
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