This might be a dumb question, or maybe it has been covered somewhere else but I was wondering if I buy a jdm tach is there some why to know how fast you really are going or do you have to remember like 10 mph is 20 kph

 

one mile is 1.6 km. 60 mph=100 kph. 75 mph=120 kph. That should be all you'd need. Oh, this might work good too. 30 mph=50 kph. Just do multiples of 50.

 

You either have to do the math in your head, or install a KPH to MPH converter.

 

Why not just gauge your speed using the RPM??

 

Tape a calculator to your steering wheel and then divide it. I think APC sells a racing calculator with underglow and neon buttons.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jorsher &raquo;</TD></TR><TR><TD CLASS="quote">Tape a calculator to your steering wheel and then divide it. I think APC sells a racing calculator with underglow and neon buttons.</TD></TR></TABLE>

Nah expletive the APC one, I want a JDM racing calculator with amber numbers.

 

Oh yeah it has the carbon fiber bezel too, and is rhd

 

Use a USDM tach

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by OogalyDoogaly &raquo;</TD></TR><TR><TD CLASS="quote">Use a USDM tach </TD></TR></TABLE>

Yea I don't see the point in going "m4Dt1z1gHtJDMy0" on the Gauge Cluster. But if you must, i Know theres some stickers they sell around somewhere that have your basic KPH to MPH conversions done already. So search around for that.

 

geez just remember what rpm equals what speed in that particular gear. i have driven without a speedo for a year now

 

jdm tach's read rpm the same way usdm tach's do... the speedometer is the one what is different... but you get the idea