I know that you can't drive the wheels too fast when the car is off the ground because otherwise the tires will burst (too much force in all directions), however I was wondering if I took off the wheels, shifted the car into gear and then accelerated, should I limit my speed or not? I want to know because I want to know if a speed sensor works in a linear fashion or if it's a curve or whatnot.

The reason I ask has to do with my idea of fiddling with the speed sensor voltage in order to properly calibrate the speedometer and hopefully odometer as well. Apparently, higher voltage means a higher speed, if you put larger tires on your car, it will register a slower speed which means lower voltage from the VSS. So if the VSS is linear, then adding a smidgen of voltage to the VSS' output would therefore have everything attached read the higher speed.


Is there an easier way to adjust the speed sensor on a car in order to properly adjust for larger or smaller tires?

 

I've done it at roughly 30mph to calibrate the speedo needle to VSS datalog to make sure it's accurate, HTH

 

I think it would be OK.
I would just be VERY CAREFUL as the vibrations increase the faster you go may cause it to fall. Support it well and you should be ok...

Sometimes to diagnose drivetrain problems, you gotta drive them on the lift with the wheels spinning. (Ive had cars doing over 100mph on a lift)
Just increase and decrease the speed gradually and dont "shock" the tranny, you should be fine.

DISCLAIMER- Let an insured shop with certified techs perform potentially dangerous operations.

 

dont do this with an LSD equipped transmission. but you should be fine otherwise