On this page you’ll find the full specifications for this 275/45R21 Pirelli P Zero (PZ4) Sport Summer tire — including load/speed ratings, certifications (3PMS / studdable / run-flat / XL), UTQG (when provided by the manufacturer), and shipping details for Ontario and Quebec.
Quick Specs
Size: 275/45R21
Brand / Model: Pirelli P Zero (PZ4) Sport
Season: Summer
Certifications: Run-flat, XL (Extra Load)
Delivery (Ontario & Quebec): Free shipping • 1–3 business days (Ontario and Quebec)
275/45R21 Pirelli P Zero (PZ4) Sport
Run-flat technology indicated.
How this tire is positioned
275/45R21 Pirelli P Zero (PZ4) Sport is positioned as a summer tire built around a 275 mm section width and 21-inch wheel fitment.
In practical terms, this size combines a 45-series sidewall of about 124 mm with a 21-inch wheel diameter, which is useful when matching an existing tire size and wheel setup.
Feature-wise, this listing indicates run-flat construction, an XL extra-load rating, UTQG 280 AA A when provided by the manufacturer.
About the 275/45R21 tire size
The 275/45R21 size breaks down as follows:
275 — tread width in millimetres
45 — sidewall height as a percentage of tread width (approx. 124 mm)
R21 — fits a 21-inch rim
The 275/45R21 size is commonly found on performance vehicles and heavy-duty trucks. If you’re matching an existing set, confirm the full size marking on your sidewall before ordering.
Key features — Pirelli P Zero (PZ4) Sport in 275/45R21
Run-flat construction (where supported by vehicle and setup).
XL (Extra Load) rating indicated.
UTQG: 280 AA A (when provided by manufacturer).
Size: 275/45R21 (fits an 21-inch wheel).
Find tires for your vehicle
Select your year, make, model, and trim to see all compatible tires available for delivery across Ontario and Quebec:
Frequently asked questions — 275/45R21 Pirelli P Zero (PZ4) Sport Summer
What does the 275/45R21 tire size mean?
The 275/45R21 size indicates a tread width of 275 mm, a sidewall ratio of 45% (approximately 124 mm tall), and a 21-inch rim diameter. This size is commonly found on performance vehicles and heavy-duty trucks.
Is the 275/45R21 Pirelli P Zero (PZ4) Sport a Summer tire?
Yes — the 275/45R21 Pirelli P Zero (PZ4) Sport is categorized as a Summer tire.
Is the 275/45R21 Pirelli P Zero (PZ4) Sport 3PMS rated?
The listing for the 275/45R21 Pirelli P Zero (PZ4) Sport does not specify 3PMS certification. Verify with the manufacturer’s specification sheet for confirmation.
Is the 275/45R21 Pirelli P Zero (PZ4) Sport studdable?
The listing for the 275/45R21 Pirelli P Zero (PZ4) Sport does not specify studdable capability. Contact us or check the manufacturer’s documentation for confirmation.
Does the 275/45R21 Pirelli P Zero (PZ4) Sport support run-flat driving?
Yes — the 275/45R21 Pirelli P Zero (PZ4) Sport is listed as a run-flat tire. Run-flat tires require a compatible vehicle with a functioning Tire Pressure Monitoring System (TPMS).
Is the 275/45R21 Pirelli P Zero (PZ4) Sport an XL (extra load) tire?
Yes — the 275/45R21 Pirelli P Zero (PZ4) Sport carries an XL (extra load) rating, enabling it to handle higher inflation pressures and greater load capacities than a standard-load equivalent.
Can I order the 275/45R21 Pirelli P Zero (PZ4) Sport with delivery to Ontario or Quebec?
Yes — XYZTires ships the 275/45R21 Pirelli P Zero (PZ4) Sport to addresses across Ontario and Quebec. Free shipping • 1–3 business days (Ontario and Quebec).
Other available sizes — Pirelli P Zero (PZ4) Sport