Cooper

Discoverer SRX

Name: Cooper Discoverer SRX 275/45R20 XL
Brand: Cooper
SKU: 166607019
Price: 204.74 USD
Availability: InStock

275/45R20 XL

$204.74/tire $272.99

Set of 4: $818.96

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Specifications

Size	275/45R20 XL Discoverer SRX
Width	275 mm
Aspect ratio	45
Rim diameter	R20
Load index	110
Speed rating	V
Load range	XL

UTQG	700 A A
Treadwear warranty	65,000 miles
Tread depth	12/32"
Weight	36.01 lbs
Max pressure	50 psi
Severe snow (3PMSF)	No
Run-flat	No

About the Cooper Discoverer SRX

All-Season Passenger CUV/SUV Touring tire.

Features

* Wear Square® visual wear indicator* Stabiledge™ performance* Silica compound* 3D Micro-Gauge™ siping* M+S Rated* Premium Limited Warranty* Free 45-Day Road Test* 75,000 Mile Limited Treadwear Protection Warranty (T/S-Rated)* 70,000 Mile Limited Treadwear Protection Warranty (H-Rated)* 65,000 Mile Limited Treadwear Protection Warranty (V-Rated)

Benefits

* Allows you to quickly see the approximate tread life remaining on your tires* Enhances handling and dry traction stability* Competition-grade resin that enhances wet traction and gives an advantage you can feel on the road* Helps maintain a stable shape during acceleration, braking and cornering, which enhances grip and traction

Understanding the 275/45R20 XL size

In the size code 275/45R20, 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. R20 means radial construction on a 20-inch wheel, giving an approximate overall diameter of 29.7".

The load index 110 means each tire supports up to 2,337 lbs — about 9,348 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.

Tread life and grip ratings

This tire carries a UTQG rating of 700 A A. The treadwear grade of 700 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 $204.74 per tire, a full set of four costs $818.96. That is about 14% below the average price of the 93 tires we stock in this size. Backed by a 65,000-mile treadwear warranty, that works out to roughly $12.60 per 1,000 miles across the set.

Frequently asked questions

What does the tire size 275/45R20 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 R20 indicates radial construction for a 20-inch wheel. Overall diameter is approximately 29.7 inches.

What are the load and speed ratings of the Cooper Discoverer SRX 275/45R20 XL?

Its load index of 110 allows up to 2,337 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 Cooper Discoverer SRX 275/45R20 XL tires cost?

A single tire is $204.74 and a set of four is $818.96, covered by a 65,000-mile treadwear warranty.

Does the Discoverer SRX come in other sizes?

Yes — we stock 27 additional Discoverer SRX sizes besides 275/45R20 XL. Fit only a size approved for your vehicle.