MPH Calculator - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Gutling · 09-03-2006, 09:47 AM

Hi, was wanting a little help with something. I have tried searching, but not knowing exactly what to search for has brought up a lot of offtopic/useless information.

I am trying to figure out mph based on rpm/tiresize/rearend/gearratios

I found a bunch of calculators on the internet, but I do not know what values to input.

I have a 89 240sx, open diff, with a sr20det redtop 5speed

my wheels are 245/45/18

I am wanting to do this to see if my speedo is off any and curiosity at what the car does after 110mph

Sorry if this is the third one of these today or anything, but I have been trying to search and appreciate any help!

09-03-2006, 09:47 AM	#1
Gutling Leaky Injector Join Date: Aug 2005 Location: Claxton, GA Posts: 65 Trader Rating: (0) Feedback Score: 0 reviews	MPH Calculator Hi, was wanting a little help with something. I have tried searching, but not knowing exactly what to search for has brought up a lot of offtopic/useless information. I am trying to figure out mph based on rpm/tiresize/rearend/gearratios I found a bunch of calculators on the internet, but I do not know what values to input. I have a 89 240sx, open diff, with a sr20det redtop 5speed my wheels are 245/45/18 I am wanting to do this to see if my speedo is off any and curiosity at what the car does after 110mph Sorry if this is the third one of these today or anything, but I have been trying to search and appreciate any help!