I have a 2007 Surburban and was wondering At 70-75 mph what rpm should i be seeing?

 

Depends on what gears you have

 

Around 2K.

 

we have the 3.42 gears and are about 2k like Shark said

 

Determine the circumference of your tire, then using some math, find out how many revolutions it will do in a mile(5,280’) then multiply that by your axle ratio, then your transmission ratio to find out the RPM for any given MPH and gear. easy stuffs…


Or... whatever your tachometer says ...

 

I wanna say its like 1800 in OD and 2200 or so in 3rd with the 3.42 but 2k give or take...