Michelin Primacy A/S 285/45R21 XL Primacy A/S
Michelin

Primacy A/S

285/45R21 XL
All-Season M+S
$335.99/tire $447.99
Set of 4: $1343.96
Minimum order: 4 tires (sizes can be mixed) ? Selling in sets of 4 is how we keep our prices this low — and a matching set keeps your car balanced and safe.
Most drivers replace all four for even wear and handling.
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Specifications

Size285/45R21 XL Primacy A/S
Width285 mm
Aspect ratio45
Rim diameterR21
Load index113
Speed ratingV
Load rangeXL
SeasonAll-Season
Treadwear warranty55,000 miles
Tread depth8.5/32"
Weight35.6 lbs
Max pressure51 psi
Severe snow (3PMSF)No
Run-flatNo

About the Michelin Primacy A/S

All-Season High Performance/Ultra High Performance Passenger Car tire.

Features

* Circumferential grooves* Zig-zag sipes* M+S Rated* 55,000 Mile/90,000 km Manufacturer's Treadwear Limited Warranty (V/H/T-Rated)* 45,000 Mile/75,000 km Manufacturer's Treadwear Limited Warranty (W/Y-Rated)* Mileage Warranty Exceptions - Split Fitments and ZP (Zero Pressure) tires - the maximum Mileage Warranty for ZP tires is 30,000 miles/50,000 kms* Standard Manufacturer's Limited Warranty

Benefits

* Help to evacuate water from the tire's footprint and reduce the risk of hydroplaning* Provide excellent grip and enhanced traction on wet or light snow covered roads

Understanding the 285/45R21 XL size

In the size code 285/45R21, 285 is the section width in millimetres (about 11.2"). 45 is the aspect ratio — the sidewall height is 45% of the width, or roughly 128.3 mm. R21 means radial construction on a 21-inch wheel, giving an approximate overall diameter of 31.1".

The load index 113 means each tire supports up to 2,535 lbs — about 10,140 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 Michelin Primacy A/S is built for

The Michelin Primacy A/S is an all-season tire, balancing dry grip, wet traction and tread life across spring, summer and autumn conditions. It carries an M+S (mud and snow) marking for light winter service. Fitment category: Passenger Car, Performance, HP.

Price and value

At $335.99 per tire, a full set of four costs $1343.96. That is about 16% below the average price of the 44 tires we stock in this size. Backed by a 55,000-mile treadwear warranty, that works out to roughly $24.44 per 1,000 miles across the set.

Frequently asked questions

What does the tire size 285/45R21 mean?

285 is the section width in millimetres, 45 is the aspect ratio (sidewall height as a percentage of width, about 128.3 mm), and R21 indicates radial construction for a 21-inch wheel. Overall diameter is approximately 31.1 inches.

What are the load and speed ratings of the Michelin Primacy A/S 285/45R21 XL?

Its load index of 113 allows up to 2,535 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 Michelin Primacy A/S 285/45R21 XL tires cost?

A single tire is $335.99 and a set of four is $1343.96, covered by a 55,000-mile treadwear warranty.

Does the Primacy A/S come in other sizes?

Yes — we stock 31 additional Primacy A/S sizes besides 285/45R21 XL. Fit only a size approved for your vehicle.

Other sizes of this model

Similar tires in 285/45R21

Pirelli Scorpion Winter 285/45R21 XL Scorpion Winter (B1)
Pirelli
Scorpion Winter
285/45R21 XL
Winter 3PMSF
$390.54/tire
$1562.16 set of 4