Write a Review
Pirelli
Pirelli PIR P-Zero (PZ4) Sport 265/40ZR21XL
Pirelli PIR P-Zero (PZ4) Sport 265/40ZR21XL
📧 Get Fitment Help
Verify parts fit & get product recommendations
Lease-to-own for as low as
/week
Get Started
Guaranteed to Fit — confirm your size with the fitment checker on this page
Price Match Guarantee Learn More
Free Mount & Balance
Free Shipping
OUT OF STOCK 
📧 Get Fitment Help
Verify parts fit & get product recommendations
Looking for a 265/40R21 high performance tire? The Pirelli P-Zero (PZ4) Sport is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 265/40R21 means
In the size 265/40R21, 265 is the section width in millimeters (10.43 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 106.0 mm (4.17 in) — R denotes radial construction, and 21 is the wheel diameter in inches. That works out to an overall diameter of about 29.35 inches, turning roughly 687 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 21 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 105 — a maximum load of 2,039 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.
Specifications
| Size | 265/40ZR21xL |
| Tire Type | High Performance |
| Service Description | 105Y |
| Load Index | 105 |
| Speed Rating | Y |
| Load Range | XL |
| Section Width (mm) | 265 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 21 |
| Tread Depth (/32") | 8 |
| Treadwear | 280 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 280AAA |
Frequently asked questions
What kind of tire is the Pirelli P-Zero (PZ4) Sport?
The Pirelli P-Zero (PZ4) Sport in 265/40R21 is a high performance tire.
What are the treadwear and warranty ratings on the Pirelli P-Zero (PZ4) Sport?
This tire carries a treadwear grade of 280, traction grade AA, temperature grade A under UTQG.
What does 105Y mean on the Pirelli P-Zero (PZ4) Sport?
105Y breaks down as load index 105 — rated for 2,039 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.
Keep shopping
Shop all 265/40R21 tires, see every Pirelli P-Zero (PZ4) Sport size, or view all tires at ThreePiece.us.
- BRAND:
- Pirelli
- Model:
- PIR P-Zero (PZ4) Sport
- Size:
- 265/40ZR21xL
- Aspect Ratio:
- 40
- Load Index:
- 105
- Load Range:
- XL
- Section Width:
- 265
- Service Description:
- 105Y
- Speed Index:
- Y
- Temperature:
- A
- Tire Rim Diameter:
- 21
- Tire Type:
- High Performance
- Traction:
- AA
- Tread Wear:
- 280
- Tread Depth:
- 8
- UQTG:
- 280AAA
- Warranty:
- N/A
PRODUCT REVIEWS (0)
Overall Rankings
Have you tried this product?
WRITE A REVIEWNo reviews for this product yet. Be the first to write a review!
Write a Review