Michelin Latitude Sport 3 275/45R21 Latitude Sport 3 Mo-S Acoustic
Michelin

Latitude Sport 3

275/45R21
$344.24/tire $458.99
Set of 4: $1376.96
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

Size275/45R21 Latitude Sport 3 Mo-S Acoustic
Width275 mm
Aspect ratio45
Rim diameterR21
Load index107
Speed ratingY
Load rangeSL
UTQG200 A A
Treadwear warranty20,000 miles
Tread depth8.5/32"
Weight36.49 lbs
Max pressure51 psi
Severe snow (3PMSF)No
Run-flatNo

About the Michelin Latitude Sport 3

Summer Ultra-High Performance Passenger SUV and Crossover tire.

Features

* Chosen by some of the world's best vehicle manufacturers* New tread compound and increased void ratio* Variable thickness sipes* Eco Feature - Michelin Green X* 20,000 Mile Manufacturer's Treadwear Limited Warranty (Speed Rating: V/W/Y)**Mileage Warranty Exceptions may apply* Standard Limited Warranty (All Michelin® Tires)

Benefits

* Engineered to excel in wet conditions with improved wet grip* Reduce tread block deformation for lower rolling resistance

Understanding the 275/45R21 size

In the size code 275/45R21, 275 is the section width in millimetres (about 10.8"). 45 is the aspect ratio — the sidewall height is 45% of the width, or roughly 123.8 mm. R21 means radial construction on a 21-inch wheel, giving an approximate overall diameter of 30.7".

The load index 107 means each tire supports up to 2,149 lbs — about 8,596 lbs across a full set of four. The speed symbol Y certifies the tire to 186 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

Tread life and grip ratings

This tire carries a UTQG rating of 200 A A. The treadwear grade of 200 is a relative durability score — a grade of 200 is expected to last roughly twice as long as a grade of 100 under the same controlled test. Traction grade A measures straight-line wet stopping grip (AA is highest, then A, B and C). Temperature grade A reflects heat resistance at sustained speed (A is highest).

Price and value

At $344.24 per tire, a full set of four costs $1376.96. That is about 11% above the average of the 73 tires we stock in this size, reflecting its position in the range. Backed by a 20,000-mile treadwear warranty, that works out to roughly $68.85 per 1,000 miles across the set.

Frequently asked questions

What does the tire size 275/45R21 mean?

275 is the section width in millimetres, 45 is the aspect ratio (sidewall height as a percentage of width, about 123.8 mm), and R21 indicates radial construction for a 21-inch wheel. Overall diameter is approximately 30.7 inches.

What are the load and speed ratings of the Michelin Latitude Sport 3 275/45R21?

Its load index of 107 allows up to 2,149 lbs per tire. Its speed rating of Y is certified to 186 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 Latitude Sport 3 275/45R21 tires cost?

A single tire is $344.24 and a set of four is $1376.96, covered by a 20,000-mile treadwear warranty.

Does the Latitude Sport 3 come in other sizes?

Yes — we stock 39 additional Latitude Sport 3 sizes besides 275/45R21. Fit only a size approved for your vehicle.

Other sizes of this model

Similar tires in 275/45R21