1. Bolt pattern: The bolt pattern refers to the number and arrangement of the lug bolts that secure the rim to the wheel hub. The bolt pattern for the 1990 Buick LeSabre is 5x115mm, which means that there are five lug bolts arranged in a circle with a diameter of 115 millimeters.
2. Offset: The offset is the distance between the mounting surface of the rim and the center of the rim. A positive offset means that the mounting surface is closer to the center of the rim, while a negative offset means that the mounting surface is further away from the center of the rim. The offset for the 1990 Buick LeSabre is 44mm.
3. Width: The width of the rim is measured in inches. The width of the rim should be compatible with the width of the tire. The recommended tire size for the 1990 Buick LeSabre is 215/65R15, which means that the tire has a width of 215 millimeters, an aspect ratio of 65%, and a diameter of 15 inches.
If the 15 inch rims that you are considering have the correct bolt pattern, offset, and width, then they should fit your 1990 Buick LeSabre. However, it is always a good idea to consult with a qualified mechanic or automotive expert to ensure that the rims are the correct size and specifications for your vehicle.
