What is the diameter of my wheels?
This is just the overall size of the wheel. For example, if a wheel is listed as 17x8.5 +35, the wheels diameter is 17 inches. The other 2 numbers are width and offset, which we will go over below. If you plan on putting bigger wheels and tires on a vehicle, you must take into account clearance when turning to make sure it does not make contact with any other parts of the vehicle. These must be taken when the vehicles suspension is compressed and on the ground, as it will be very different than when up in the air on a jack.
What is the width of my wheels?
The width of a wheel can be determined by measuring the inside of the wheel lip, across the wheel to the other wheel lip. This is important when determining which tires will fit your wheels and if the wheels will have enough space in the wheel well.