If your 1998 Chevy S10 still has its original lugs, you might have noticed that they’re getting rusty or corroded. This can make it hard to change your tires, so it’s probably time to replace them. Before you shop for new lugs or tires, you’ll need to know your Chevy’s bolt pattern.

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1998 Chevy S10 bolt pattern

The 1998 Chevy S10 bolt pattern is 5x4.75. Bolt patterns are usually shown like this:

# of bolts x diameter of the circle they form

Simply put, this means there are 5 bolts arranged in a circle 4.75 inches in diameter.

If you’re planning on changing out your Chevy’s wheels, there are a few more measurements you’ll need. Tire and rim measurements are incredibly specific, so you need to know the stud size, wheel offset, center bore measurement, and torque specifications:

Factory wheel size: 15” to 16”

Stud size: M12x1.25 (12 mm stud thread and 1.25 mm thread spacing)

Offset: 13 to 50 mm

Center bore: 70.3 mm

Wheel tightening torque: 129 Nm

MORE: Easy car mods

How to measure your 1998 Chevy S10’s bolt pattern

If you used the specific measurements for your 1998 Chevy S10, you shouldn’t have any problem buying replacement wheels that will fit perfectly. But if you want to double-check your new wheels before you go through the trouble of changing them out, grab a measuring tape.

Put the end of your measuring tape (or even a simple ruler) at the outer edge of a lug hole and stretch the tape to the center of the opposite bolt. This gives you the diameter of the circle, which should match up to 4.75 inches.

Give the lugs a quick count—you should see five. Put the two measurements together to get a matching bolt pattern of 5x4.75. It’s that easy!

MORE: Are Chevrolets expensive to maintain?

How to optimize your Chevy’s insurance coverage

While you’re maintaining your Chevy S10, don’t forget to give your car insurance a quick upgrade. After all, when was the last time you updated your coverage?

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