Pirelli

Scorpion Winter

Name: Pirelli Scorpion Winter 315/40R21 XL
Brand: Pirelli
SKU: 3540900
Price: 407.90 USD
Availability: InStock

315/40R21 XL

Winter 3PMSF M+S

$407.90/tire $543.87

Set of 4: $1631.60

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Specifications

Size	315/40R21 XL Scorpion Winter (MO1)
Width	315 mm
Aspect ratio	40
Rim diameter	R21
Load index	115
Speed rating	V
Load range	XL

Season	Winter
Tread depth	10/32"
Weight	40.41 lbs
Max pressure	50 psi
Severe snow (3PMSF)	Yes
Run-flat	No

About the Pirelli Scorpion Winter

Winter Passenger SUV/CUV tire.

Features

* Circumferential grooves: two and four groove version* New mould profile* Directional and symmetric tread pattern design with modular block geometry and sipe layout* New tread pattern compound with innovative materials* Pirelli Noise Cancelling System™ (NCS) - select items only* Pirelli Seal Inside™ (S-I) puncture proof technology - select items only* Pirelli ELECT™ (ELT) electric/hybrid tire technology – select items only* M+S Rated* Carries the Three-Peak Mountain Snowflake (3PMSF) symbol

Benefits

* Improved handling on snowy surfaces and reduces the braking distance in all winter driving conditions* Improves traction, lateral force during cornering, slalom and lane change situations* Excellent wet handling and wet braking performance* Significantly reduces noise inside the vehicle - select items only* Allows you to drive on without losing air pressure even after the tire has been punctured by an external object - select items only* Meets the required performance criteria for Use in Severe Snow Conditions

Understanding the 315/40R21 XL size

In the size code 315/40R21, 315 is the section width in millimetres (about 12.4"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 126 mm. R21 means radial construction on a 21-inch wheel, giving an approximate overall diameter of 30.9".

The load index 115 means each tire supports up to 2,679 lbs — about 10,716 lbs across a full set of four. The speed symbol V certifies the tire to 149 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

What the Pirelli Scorpion Winter is built for

The Pirelli Scorpion Winter is a winter tire, using a cold-weather compound that stays pliable below 45°F (7°C) where all-season rubber hardens and loses grip. It carries the three-peak mountain snowflake (3PMSF) symbol, meaning it passed a standardised severe-snow traction test. Fitment category: Passenger Car, SUV/CUV.

Price and value

At $407.90 per tire, a full set of four costs $1631.60. That sits close to the average for the 29 tires we stock in this size.

Frequently asked questions

What does the tire size 315/40R21 mean?

315 is the section width in millimetres, 40 is the aspect ratio (sidewall height as a percentage of width, about 126 mm), and R21 indicates radial construction for a 21-inch wheel. Overall diameter is approximately 30.9 inches.

What are the load and speed ratings of the Pirelli Scorpion Winter 315/40R21 XL?

Its load index of 115 allows up to 2,679 lbs per tire. Its speed rating of V is certified to 149 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.

How much does a set of 4 Pirelli Scorpion Winter 315/40R21 XL tires cost?

A single tire is $407.90 and a set of four is $1631.60.

Is the Pirelli Scorpion Winter rated for snow?

Yes. It carries the three-peak mountain snowflake (3PMSF) symbol, meaning it met a standardised severe snow traction test and is built as a dedicated winter tire.

Does the Scorpion Winter come in other sizes?

Yes — we stock 137 additional Scorpion Winter sizes besides 315/40R21 XL. Fit only a size approved for your vehicle.