it never came to my mind but my friend bought a 97 integra LS and we took it out for a spin and i notice he is doing 3.5K at 80mph, while my eg (b18b, ls tranny???) is doing 80mph at 3K.
he is running on 195/50/15 while im running on 185/65/14. is the rpm off by the tire size ?

 

do u have a ls tranny? also does he have a gsr tranny? also ur speedo's could be off?? or the fact the eg is lighter?

just a guess

 

Could also be a faulty tach.

 

You might find more answer here. http://www.teammfactory.com/gearcalculator.php

 

i dont know what tranny i have im trying to find out. im pretty sure he has an ls tranny since i match the vin on the tranny and car.

could be. i used to have a "gsr" tranny but i highly doubt it was one since at 80 i was doing 3K. i decided to trade the tranny from my brother since i though he was an LS cause he longer gear ratios, but after today when we took the ls for a spin i notice my gears are longer than an LS

 

Tire size will make a difference.

 

95 hatch with 95 gsr and gsr tranny 4k @ 80mph. My friend bought a "gsr"(ls tranny) tranny and he is 3.5@ 80mph in a 97 integra

 

The engine doesn't have to work as hard in the lighter car...not sure if that would factor in; it would make sense though--if not one of the reasons mentioned above.

 

Actually, no it won't.

Incorrectly sized tires will make the speedometer inaccurate.

However, regardless of tire size, the tachometer will read the same for the same speedometer displayed speed.

 

probably an LS tranny cuz im doing 4k @ 80mph in my 00 gsr.

 

im doing 41mi @2100 fifth gear is this normal? with P195 60 14?

 

Ding ding ding! That's correct. The tire size has no effect on the relationship between the speed indicated on the speedometer and the revs indicated on the tachometer.

An Integra LS should indeed say that it's going 80 mph when turning 3500 RPM in fifth gear. Regardless of what size tires you use.