Additional information

Season

width

profile

diameter

Load Index

Speed Index

Brand

Tyre Season All Season
Vehicle Type

Passenger

Sidewall

Black Sidewall

Warranty

70000

Tread Depth

10

EV Compatible

Yes

uTQG

540 AA A

XL

Yes

Tyre Size 255/40R21
Width 255
Profile 40
Diameter 21
Load Index 102
Speed Index Y

Description

<a href="https://xyztires.com/product-tag/all-season/">All Season</a> Pilot Tires: The Best Choice for Your Vehicle

All Season Pilot Tires: The Best Choice for Your Vehicle

When it comes to maximizing your driving experience year-round…all season pilot tires offer unparalleled performance. Embracing remarkable innovations and technology…the Michelin Pilot Sport A/S 4 is a standout option in the category of All Season tires. If you seek reliability and top-tier handling for your vehicle…especially with the 255/40ZR21 size…these tires promise to be a worthy investment.

Michelin Pilot Sport A/S 4 All Season…all season pilot tires…255/40R21…tires…tires near me…tire clearance…and tire sale!

The Michelin Pilot Sport All Season 4 is an ultra high performance tire developed on the track and proven on the street. It has an asymmetric tread pattern that ensures even heat and traction distribution for a long tread life while providing more outer shoulder lateral grip and maximum levels of silica to stick to the pavement. Full depth sipes improve the Pilot Sport All Season 4’s traction in wet and snowy condition and helped it become the first ever all-season tire chosen by Chevrolet for the Corvette.It also has a 45,000 mile tread life warranty for all sizes.

The Michelin Pilot Sport A/S 4 stands apart for its ingenious design and technology. The tire seamlessly melds cutting edge materials with superior engineering to provide the best performance in varied weather conditions. Whether it’s bright sunshine or light snow…these all season pilot tires adjust to provide excellent traction and stability.

Innovative Technology in Michelin Pilot Sport A/S 4

At the heart of every Michelin tire is ground-breaking technology…and the Pilot Sport A/S 4 is no exception. With a focus on sustainability and performance…these tires boast of:

  • Asymmetric tread patterns for enhanced grip.
  • Rigid tread blocks for better stability.
  • High silica content for improved wet traction.

These features make these all season pilot tires perform reliably throughout the year…perfect for drivers who do not want to switch tires between seasons.

Why Should You Choose All Season Pilot Tires?

Choosing all season pilot tires like the Michelin Pilot Sport A/S 4 offers you the peace of mind that comes with reliability and innovation. These tires excel at wear resistance and deliver a smooth…quiet ride…enhancing both comfort and performance. They are available in popular sizes…including the versatile 255/40ZR21…making them a perfect match for a wide range of vehicles.

The Best Choice for the Best Driving Experience

Every journey becomes an exhilarating drive with Michelin Pilot Sport A/S 4 under your vehicle. So if you’re searching for all season pilot tires that strike a balance between performance and durability…these tires are the way to go. Choosing them means choosing unmatched quality and remarkable performance.

Detailed specifications

On this page you’ll find the full specifications table for this 255/40R21 Michelin Pilot Sport A/S 4 – All Season tire. This includes manufacturer and listing details (when available) like construction, load and speed rating, certifications (3PMS / studdable / run-flat / XL), and any published ratings such as UTQG (when provided).

Quick Specs

  • Size: 255/40R21
  • Brand/Model: Michelin Pilot Sport A/S 4 –
  • Season: All Season
  • Certifications: XL (Extra Load)
  • Shipping: Free shipping • 1–3 business days (Ontario and Quebec)

255/40R21 Michelin Pilot Sport A/S 4 – All Season

Category: All Season – Ultra High Performance

The Michelin Pilot Sport All Season 4 is an ultra high performance tire developed on the track and proven on the street. It has an asymmetric tread pattern that ensures even heat and traction distribution for a long tread life while providing more outer shoulder lateral grip and maximum levels of silica to stick to the pavement. Full depth sipes improve the Pilot Sport All Season 4's traction in wet and snowy condition and helped it become the first ever all-season tire chosen by Chevrolet for the Corvette. It also has a 70,000km tread life warranty for all sizes.

XL (Extra Load) rating indicated.

How this tire is positioned

255/40R21 Michelin Pilot Sport A/S 4 – is positioned as a all season / all season – ultra high performance tire built around a 255 mm section width and 21-inch wheel fitment.

In practical terms, this size combines a 40-series sidewall of about 102 mm with a 21-inch wheel diameter, which is useful when matching an existing tire size and wheel setup.

Feature-wise, this listing indicates an XL extra-load rating, UTQG 540 AA A when provided by the manufacturer.

About the 255/40R21 tire size

The 255/40R21 size breaks down like this:

  • 255 = tire width in millimetres
  • 40 = sidewall height as a percentage of width (approx. 102 mm)
  • R21 = fits an 21-inch wheel

If you’re matching an existing set, confirm the full size on your sidewall before ordering.

Key features on this Michelin Pilot Sport A/S 4 – in 255/40R21

Highlights based on the details available for this tire:

  • XL (Extra Load) rating indicated.
  • UTQG: 540 AA A (when provided by manufacturer).
  • Size: 255/40R21 (fits an 21-inch wheel).
  • Season category: All Season.

Warranty

  • Warranty: 70000
  • Warranty coverage is provided by the manufacturer and may vary by application and service conditions.

FAQ: 255/40R21 Michelin Pilot Sport A/S 4 – All Season

What does 255/40R21 mean on a tire?

It indicates the tire’s width (255 mm), sidewall ratio (40%), and wheel diameter (R21).

Is this a All Season tire?

Yes — this tire is categorized as All Season.

Is this tire 3PMS rated?

This listing does not specify 3PMS for this tire.

Is this tire studdable?

This listing does not specify whether this tire is studdable. Check local rules before installing studs.

Does it support run-flat driving?

No — this tire is not listed as run-flat.

Is this tire XL (extra load)?

Yes — this tire is listed as XL (extra load).

How long does delivery take in Ontario and Quebec?

Free shipping • 1–3 business days (Ontario and Quebec)

Other available sizes for Michelin Pilot Sport A/S 4 –

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