Goodride SPORT SA-77 225/35R18

The Goodride SPORT SA-77 in 225/35R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 225/35R18 means

In the size 225/35R18, 225 is the section width in millimeters (8.86 in), 35 is the aspect ratio — the sidewall stands 35% as tall as the tire is wide, or 78.8 mm (3.10 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 24.20 inches, turning roughly 833 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.

The manufacturer lists the overall diameter of this specific tire as 18 inches — when clearance is tight, go by the published figure rather than the nominal size math.

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 225/35R18 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 225/35R18, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.

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