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Pirelli
Pirelli PIR PZero All Season 225/45R18
Pirelli PIR PZero All Season 225/45R18
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The Pirelli PZero All Season in 225/45R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 225/45R18 means
In the size 225/45R18, 225 is the section width in millimeters (8.86 in), 45 is the aspect ratio — the sidewall stands 45% as tall as the tire is wide, or 101.2 mm (3.99 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 25.97 inches, turning roughly 777 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.
The service description on this tire decodes to a load index of 95 — a maximum load of 1,521 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.
Specifications
| Size | 225/45R18 |
| Tire Type | High-Performance |
| Service Description | 95V |
| Load Index | 95 |
| Speed Rating | V |
| Load Range | XL |
| Section Width (mm) | 225 |
| Aspect Ratio | 45 |
| Overall Diameter (in) | 18 |
| Tread Depth (/32") | 10 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 500AA |
Frequently asked questions
What does 95V mean on the Pirelli PZero All Season?
95V breaks down as load index 95 — rated for 1,521 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.
What kind of tire is the Pirelli PZero All Season?
The Pirelli PZero All Season in 225/45R18 is a high-performance tire.
What are the treadwear and warranty ratings on the Pirelli PZero All Season?
This tire carries a treadwear grade of 500, traction grade A, temperature grade A under UTQG.
Keep shopping
Shop all 225/45R18 tires, see every Pirelli PZero All Season size, or view all tires at ThreePiece.us.
- BRAND:
- Pirelli
- Model:
- PIR PZero All Season
- Size:
- 225/45R18
- Aspect Ratio:
- 45
- Load Index:
- 95
- Load Range:
- XL
- Section Width:
- 225
- Service Description:
- 95V
- Speed Index:
- V
- Temperature:
- A
- Tire Rim Diameter:
- 18
- Tire Type:
- High-Performance
- Traction:
- A
- Tread Wear:
- 500
- Tread Depth:
- 10
- UQTG:
- 500AA
- Warranty:
- N/A
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