Blackhawk 245/45 R18″ refers to a specific tire size and model. Here’s a breakdown of the designation:

245: This number represents the width of the tire in millimeters. In this case, the tire’s width is 245 millimeters.

45: This number indicates the aspect ratio of the tire, representing the height of the sidewall as a percentage of the width. The sidewall height is 45% of the tire’s width.

R: This letter signifies the construction type of the tire. “R” stands for radial construction, which is the standard for modern tires.

18: This number indicates the diameter of the wheel, in inches, for which the tire is designed. In this case, the tire is intended for an 18-inch wheel.

As always, it’s essential to ensure that any new tires are appropriate for the vehicle and the intended use. Professional guidance can help in confirming the compatibility of the tires with the vehicle’s specifications and driving conditions.