oem wheel tire 275/65/18 I changed it to 285/75/17. will my odometer read more or less miles driven?
Your odo will register less miles driven. Your speedometer will also read low, by 5.5% This is because the 17’s are taller by a bit less than 2 inches.
The 5.5% speedo error more likely to affect you than the odo error. At 70 mph indicated you will actually be going 73.9, although your speedo probably reads a touch low by design.