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Old 07-11-2015, 12:58 PM   #1
BRZUK
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True 0-60 time

Hi guys,

I am doing an indept review of the cosworth supercharger+all my performance modafactions.

Can someone tell me what speed you must be doing to really be at 60MPH as i think the cars are manufactured to read low and i dont have the handware to calculate by GPS.

Example-64mph on the display is 60mph by GPS

Thanks guys
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Old 07-11-2015, 02:01 PM   #2
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depends on tire size. When I was stock(lol) my car and gps were pretty much the same
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Old 07-11-2015, 04:30 PM   #3
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I'm on 235/45/17 tires and my speedo reads 1-2 MPH under my actual speed. when I was on stock tires, the speedo was accurate.
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Old 07-11-2015, 05:59 PM   #4
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Originally Posted by ryoma View Post
I'm on 235/45/17 tires and my speedo reads 1-2 MPH under my actual speed. when I was on stock tires, the speedo was accurate.
So wider the tire the speedo will read slightly under?
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Old 07-11-2015, 09:50 PM   #5
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So wider the tire the speedo will read slightly under?
it's about how tall the tire is
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Old 07-12-2015, 08:39 AM   #6
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it's about how tall the tire is
Thank you sir, good to know.
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