Changing the Size of Your Tires & Rims Changes Ratios of Other Car Components
Essentially when you increase your tire and/or rim size you are changing the ratio of all the components involved in making your vehicle stop and go. This includes the drivetrain, transmission, brake system, and all the associated parts within those systems.
This can also affect your odometer and speedometer as larger tires will have a larger circumference, causing you to travel a little bit further per each complete tire rotation. As a result, your speedometer will show you moving SLOWER than you actually are, and can lead to unwanted speeding tickets. This also will cause your odometer to register fewer miles than you are actually traveling. We recommend using this calculator at Tiresize.com to figure out how to best calibrate your speedometer when increasing your tire or wheel size.