I remember a while back someone posted a little chart approximating the vehicle speed at various engine speeds and I haven't been able to locate it with the search.. Unfortunately I have been plauged by the maxima speedometer. Mine happens to read around 5 mph off at 35 and as much as 35 mph off at highway speeds. I am positive that I am not going 90 miles an hour.

 

Here's a start.

If you have an automatic, your engine should be turning about 1900 RPM in 4th gear.

 

yeah, but at what speed? mine is in km, but does 60mph (100kph) at 2100 rpm in top gear (auto box).

 

At what ground speed? Looks like 1900 at 55 with the O/D on...

 

Sorry I forgot to mention the speed. My car runs 1900 RPM at 60 MPH in 4th gear with torque convertor locked.

I have stock-sized 205/65R15 tires.

60 MPH is 97 km/h or 100 km/h is 62 MPH.

 

Okay, thanks for the start. I'll try to work from that to make a good chart. BTW I have 215/60R15's so your figures should be extremely close to mine.

 

Okay, thanks for the start. I'll try to work from that to make a good chart. BTW I have 215/60R15's so your figures should be extremely close to mine.

edit: or not. at 1900 RPM my car goes like 50 mph. It looks like 2200 or so gets me somewhere around 60. I may use some 2 way radios and get a friend/family member to help me.

 

Turns out it was on maximaforum.com.

Here it be for all who need it. The person who made the chart had a 92 GXE I belive.

@ 1500 RPM (auto when in last gear) about 45 miles an hour.
@ 2000 RPM " " about 55
@ 2500 RPM " " about 65
@ 3000 RPM " " about 70

 

Auto 3rd gear: 6300 RPM 115MPH

 

what about for the 5 speeds for 90 vg.