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Michelin
Michelin Pilot Sport Cup 2 325/30ZR21 104(Y) - 97351
Michelin Pilot Sport Cup 2 325/30ZR21 104(Y) - 97351
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Shop the Michelin Pilot Sport Cup 2 325/30R21 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 325/30R21 means
In the size 325/30R21, 325 is the section width in millimeters (12.80 in), 30 is the aspect ratio — the sidewall stands 30% as tall as the tire is wide, or 97.5 mm (3.84 in) — R denotes radial construction, and 21 is the wheel diameter in inches. That works out to an overall diameter of about 28.68 inches, turning roughly 703 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 104 — a maximum load of 1,984 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.
Specifications
| Size | 325/30ZR21 |
| Tire Type | Summer |
| Service Description | 104Y |
| Load Index | 104 |
| Speed Rating | Y |
| Load Range | Standard Load |
| Section Width (mm) | 325 |
| Aspect Ratio | 30 |
| Overall Diameter (in) | 28.7 |
| Tread Depth (/32") | 7.2 |
| Treadwear | 180 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 180AAA |
Frequently asked questions
What are the treadwear and warranty ratings on the Michelin Pilot Sport Cup 2?
This tire carries a treadwear grade of 180, traction grade AA, temperature grade A under UTQG.
What does 104Y mean on the Michelin Pilot Sport Cup 2?
104Y breaks down as load index 104 — rated for 1,984 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.
What kind of tire is the Michelin Pilot Sport Cup 2?
The Michelin Pilot Sport Cup 2 in 325/30R21 is a summer tire.
Keep shopping
Browse Michelin tires, see every Michelin Pilot Sport Cup 2 size, or view all tires at ThreePiece.us.
- BRAND:
- Michelin
- Model:
- Pilot Sport Cup 2
- Size:
- 325/30ZR21
- Aspect Ratio:
- 30
- Load Index:
- 104
- Load Range:
- Standard Load
- Section Width:
- 325
- Service Description:
- 104Y
- Speed Index:
- Y
- Temperature:
- A
- Tire Rim Diameter:
- 28.7
- Tire Type:
- Summer
- Traction:
- AA
- Tread Wear:
- 180
- Tread Depth:
- 7.2
- UQTG:
- 180AAA
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