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Castlerock
Castlerock ST226 ST225/75R15
Castlerock ST226 ST225/75R15
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The Castlerock ST226 in 225/75R15 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 225/75R15 means
In the size 225/75R15, 225 is the section width in millimeters (8.86 in), 75 is the aspect ratio — the sidewall stands 75% as tall as the tire is wide, or 168.8 mm (6.64 in) — R denotes radial construction, and 15 is the wheel diameter in inches. That works out to an overall diameter of about 28.29 inches, turning roughly 713 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.
Load Range D corresponds to a 8-ply rating.
Specifications
| Size | ST225/75R15 |
| Load Range | D |
| Section Width (mm) | ST225 |
| Aspect Ratio | 75 |
| Temperature Grade | TIRE RIM DIAMETER=15TIRE TYPE=HighwayTRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY= |
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 225/75R15 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 225/75R15, 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.
- BRAND:
- Castlerock
- MODEL:
- ST226
- SIZE:
- ST225/75R15
- ASPECT RATIO:
- 75
- LOAD RANGE:
- D
- SECTION WIDTH:
- ST225
- SERVICE DESCRIPTION:
- -
- SPEED INDEX:
- -
- TEMPERATURE:
- TIRE RIM DIAMETER=15TIRE TYPE=HighwayTRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY=
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