i have searched, and poured over electrical wiring diagrams but with no luck..
can someone tell me where the vehicle speed sensor is - where is take it's reading from = front or back wheels... probobly a stupid question.. most cars have the sensor mounted to the back wheels.. just checking..
basically, i have a staggered wheel set up, 215/35/18 and 225/35/18.....which wheel is sending the signal to determine vehicle speed, or is it a combination of all 4 abs speed sensors?
ultimately, i want to calibrate my scangauge for vehicle speed correction, but don't know weather to base it off the tire size up front or in back

its up front

thanks! thats what i needed to know.

most cars have the sensor on the non-drive wheels, but i wanted to be sure, thanks for the quick help!

The vehicle speed sensor is mounted to the top the tranny above the diff. & takes the reading from the ring gear. For speed correction, like dodgers said, use the front wheel size.

you guys are both awesome! thanks again for the quick info!
I always know my scion life bro's have the answers to my questions!!!