Toyo Proxes ST III 275/50R20 XL Proxes ST Iii
Toyo

Proxes ST III

275/50R20 XL
Summer M+S
$157.76/tire $210.34
Set of 4: $631.04
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

Size275/50R20 XL Proxes ST Iii
Width275 mm
Aspect ratio50
Rim diameterR20
Load index113
Speed ratingQ
Load rangeXL
SeasonSummer
Treadwear warranty40,000 miles
Tread depth10.1/32"
Weight40 lbs
Max pressure50 psi
Severe snow (3PMSF)No
Run-flatNo

About the Toyo Proxes ST III

All-Season High Performance Passenger Light Truck/SUV and Crossover tire.

Features

* Dynamic directional tread design* Directional shoulder blocks* Lightning grooves* Arrowhead tapers* Multi-wave sipes* 40,000 Mile/64,000 Kilometer Limited Treadwear Warranty* 500 Mile Trial Offer

Benefits

* Provides a good balance between wet traction, dry handling and performance based looks* Stabilizes tread blocks for better braking performance and a quieter ride* Enables better water evacuation resulting in better wet performance* Delivers tread block stiffness resulting in better straight-line driving stability* Maximizes irregular wear for a smooth, quiet ride and improves light snow traction

Understanding the 275/50R20 XL size

In the size code 275/50R20, 275 is the section width in millimetres (about 10.8"). 50 is the aspect ratio — the sidewall height is 50% of the width, or roughly 137.5 mm. R20 means radial construction on a 20-inch wheel, giving an approximate overall diameter of 30.8".

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 Q certifies the tire to 99 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 Toyo Proxes ST III is built for

The Toyo Proxes ST III is a summer tire, tuned for maximum dry and wet grip in warm conditions; it is not intended for near-freezing temperatures. It carries an M+S (mud and snow) marking for light winter service. It is classified for highway terrain(h/t) use.

Price and value

At $157.76 per tire, a full set of four costs $631.04. That is about 37% below the average price of the 48 tires we stock in this size. Backed by a 40,000-mile treadwear warranty, that works out to roughly $15.78 per 1,000 miles across the set.

Frequently asked questions

What does the tire size 275/50R20 mean?

275 is the section width in millimetres, 50 is the aspect ratio (sidewall height as a percentage of width, about 137.5 mm), and R20 indicates radial construction for a 20-inch wheel. Overall diameter is approximately 30.8 inches.

What are the load and speed ratings of the Toyo Proxes ST III 275/50R20 XL?

Its load index of 113 allows up to 2,535 lbs per tire. Its speed rating of Q is certified to 99 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 Toyo Proxes ST III 275/50R20 XL tires cost?

A single tire is $157.76 and a set of four is $631.04, covered by a 40,000-mile treadwear warranty.

Can the Toyo Proxes ST III be used in winter?

No. This is a summer tire and it is not rated for severe snow service. Its compound stiffens as temperatures approach freezing, so fit winter or all-weather tires for cold-season driving.

Does the Proxes ST III come in other sizes?

Yes — we stock 50 additional Proxes ST III sizes besides 275/50R20 XL. Fit only a size approved for your vehicle.

Other sizes of this model

Similar tires in 275/50R20

Kumho Crugen HP71 275/50R20 XL Crugen HP71 Oe
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Crugen HP71
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Falken Ziex CT60 A/S 275/50R20 Ziex CT60 A/S
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