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      01-04-2017, 12:32 AM   #1
///M5-PAV
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21's vs 20's

will 21 inch wheels on my f13 slow me down and cause worse traction opposed to 20's help before i order my hre !!!
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      01-04-2017, 01:06 AM   #2
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Quote:
Originally Posted by ///M6Pav View Post
will 21 inch wheels on my f13 slow me down and cause worse traction opposed to 20's help before i order my hre !!!
The actual Force at your wheels can be calculated based on the following formula if we ignore the rolling resistance and drag force.
Force= TQ (at crank) x gear ratio x FD ratio x transmission loss / Wheel Radius
The wheel radius can be calculated based on your tire size.
For example the 295/30/20 tire has the radius of 295 *30/100 (mm) + 10" which is 13.48" . larger wheel size means less force and slightly better traction. Don't worry about slowing down since this engine is generating more than enough power and torque (especially at first gear) that can be put down...
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      01-06-2017, 10:25 AM   #3
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Originally Posted by ///M6Pav View Post
will 21 inch wheels on my f13 slow me down and cause worse traction opposed to 20's help before i order my hre !!!
21" wheels and NYC roads don't mix.
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