Castlerock ST226 185/80R13

Looking for a 185/80R13 tire? The Castlerock ST226 is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.

What 185/80R13 means

In the size 185/80R13, 185 is the section width in millimeters (7.28 in), 80 is the aspect ratio — the sidewall stands 80% as tall as the tire is wide, or 148.0 mm (5.83 in) — R denotes radial construction, and 13 is the wheel diameter in inches. That works out to an overall diameter of about 24.65 inches, turning roughly 818 revolutions per mile. Overall diameter is what matters for speedometer accuracy and clearance when you change sizes, so compare it — not just the width — against your current tire.

Specifications

Frequently asked questions

How fast does this tire ship?

Every order at ThreePiece.us ships free, with fast delivery from a nationwide warehouse network. Affirm financing is available at checkout.

Will 185/80R13 tires fit my vehicle?

Check the size molded into your current tire's sidewall or the tire placard inside the driver's door jamb — if it reads 185/80R13, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.

Keep shopping

Browse Castlerock tires, see every Castlerock ST226 size, or view all tires at ThreePiece.us.