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Accelera
Accelera PHI 235/30R21
Accelera PHI 235/30R21
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Looking for a 235/30R21 tire? The Accelera PHI is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 235/30R21 means
In the size 235/30R21, 235 is the section width in millimeters (9.25 in), 30 is the aspect ratio — the sidewall stands 30% as tall as the tire is wide, or 70.5 mm (2.78 in) — R denotes radial construction, and 21 is the wheel diameter in inches. That works out to an overall diameter of about 26.55 inches, turning roughly 760 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 service description on this tire decodes to a load index of 89 — a maximum load of 1,279 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.
Specifications
| Size | 235/30R21 |
| Service Description | 89Y |
| Load Index | 89 |
| Speed Rating | Y |
| Load Range | XL |
| Section Width (mm) | 235 |
| Aspect Ratio | 30 |
| Temperature Grade | ATIRE RIM DIAMETER=21TIRE TYPE=High PerformanceTRACTION=ATREAD WEAR=400TREAD DEPTH=UQTG=400 A AWARRANTY=40000 |
Frequently asked questions
Will 235/30R21 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 235/30R21, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.
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.
What does 89Y mean on the Accelera PHI?
89Y breaks down as load index 89 — rated for 1,279 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.
Keep shopping
Browse Accelera tires, see every Accelera PHI size, or view all tires at ThreePiece.us.
- BRAND:
- Accelera
- MODEL:
- PHI
- SIZE:
- 235/30R21
- ASPECT RATIO:
- 30
- LOAD INDEX:
- 89
- LOAD RANGE:
- XL
- SECTION WIDTH:
- 235
- SERVICE DESCRIPTION:
- 89Y
- SPEED INDEX:
- Y
- TEMPERATURE:
- ATIRE RIM DIAMETER=21TIRE TYPE=High PerformanceTRACTION=ATREAD WEAR=400TREAD DEPTH=UQTG=400 A AWARRANTY=40000
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