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Pirelli
Pirelli PIR Cinturato P7 Blue 285/40R20
Pirelli PIR Cinturato P7 Blue 285/40R20
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Shop the Pirelli Cinturato P7 Blue 285/40R20 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 285/40R20 means
In the size 285/40R20, 285 is the section width in millimeters (11.22 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 114.0 mm (4.49 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 28.98 inches, turning roughly 696 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 20 inches — when clearance is tight, go by the published figure rather than the nominal size math.
The service description on this tire decodes to a load index of 108 — a maximum load of 2,205 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.
Specifications
| Size | 285/40R20 |
| Tire Type | High-Performance |
| Service Description | 108Y |
| Load Index | 108 |
| Speed Rating | Y |
| Load Range | XL |
| Section Width (mm) | 285 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 20 |
| Tread Depth (/32") | 10 |
| Treadwear | 260 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 260AAA |
Frequently asked questions
What are the treadwear and warranty ratings on the Pirelli Cinturato P7 Blue?
This tire carries a treadwear grade of 260, traction grade AA, temperature grade A under UTQG.
What does 108Y mean on the Pirelli Cinturato P7 Blue?
108Y breaks down as load index 108 — rated for 2,205 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.
What kind of tire is the Pirelli Cinturato P7 Blue?
The Pirelli Cinturato P7 Blue in 285/40R20 is a high-performance tire.
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See every Pirelli Cinturato P7 Blue size, or view all tires at ThreePiece.us.
- BRAND:
- Pirelli
- Model:
- PIR Cinturato P7 Blue
- Size:
- 285/40R20
- Aspect Ratio:
- 40
- Load Index:
- 108
- Load Range:
- XL
- Section Width:
- 285
- Service Description:
- 108Y
- Speed Index:
- Y
- Temperature:
- A
- Tire Rim Diameter:
- 20
- Tire Type:
- High-Performance
- Traction:
- AA
- Tread Wear:
- 260
- Tread Depth:
- 10
- UQTG:
- 260AAA
- Warranty:
- N/A
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