Definitely got played. Unless your daily driver is a train and you only go in straight lines, it won't matter about differences in the tire circumference. Eve

Definitely got played. Unless your daily driver is a train and you only go in straight lines, it won't matter about differences in the tire circumference. Every time you turn the steering wheel (even a little, let alone make a turn) all 4 wheels are rotating at different speeds anyway -- it's why we need differentials! An AWD has an additional center diff or transfer case that allows the combined rotation of the front (trans)axle and rear axle to be different (because unless you are steering dead straight on a flat non-cambered road they will always be slightly different). A 4WD doesn't have that center diff and you have to manually engage 4WD to use it (that difference between 4WD and AWD). You will get transmission wind-up if drive in 4WD in anything other than a straight line on a normal road surface -- fine in the mud or snow because the wheels will slip easily enough to reduce the windup. In fact if you get really stuck, you want a diff-lock or limited slip diff so you can prevent the power going all to one wheel (or two in an AWD/4WD config). It's a myth used to sell more tires.