Toyo Proxes RR 225/50ZR15 Proxes RR (Dot Approved For Racing Purposes ONLY)
Toyo

Proxes RR

225/50ZR15
Summer
$188.12/tire $250.82
Set of 4: $752.48
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

Size225/50ZR15 Proxes RR (Dot Approved For Racing Purposes ONLY)
Width225 mm
Aspect ratio50
Rim diameterR15
Load rangeSL
SeasonSummer
UTQG40 C A
Tread depth3.7/32"
Weight21.6 lbs
Max pressure51 psi
Severe snow (3PMSF)No
Run-flatNo

About the Toyo Proxes RR

DOT Competition Racing tire Designed for Dry Tracks. Ideal for NASA Road Racing, Track Days and High-Performance Driving Schools. Race-Ready Off-the-Shelf with a 4/32 Deep Tread.

Features

* Racing tread compound* Reinforced sidewall and high-modulus bead filler* Wear inspection holes* Sidewall marking area* Toyo Tires' Limited Warranty

Benefits

* Increase grip and improves lap time* Provides excellent steering response and feedback* Provides easy tread depth measurement from any position* Allows for easy labelling on the sidewall

Understanding the 225/50ZR15 size

In the size code 225/50R15, 225 is the section width in millimetres (about 8.9"). 50 is the aspect ratio — the sidewall height is 50% of the width, or roughly 112.5 mm. R15 means radial construction on a 15-inch wheel, giving an approximate overall diameter of 23.9".

What the Toyo Proxes RR is built for

The Toyo Proxes RR is a summer tire, tuned for maximum dry and wet grip in warm conditions; it is not intended for near-freezing temperatures. Fitment category: Passenger Car, CAR, Competition/Racing, Performance, UHP.

Tread life and grip ratings

This tire carries a UTQG rating of 40 C A. The treadwear grade of 40 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 C 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 $188.12 per tire, a full set of four costs $752.48. That sits close to the average for the 5 tires we stock in this size.

Frequently asked questions

What does the tire size 225/50R15 mean?

225 is the section width in millimetres, 50 is the aspect ratio (sidewall height as a percentage of width, about 112.5 mm), and R15 indicates radial construction for a 15-inch wheel. Overall diameter is approximately 23.9 inches.

How much does a set of 4 Toyo Proxes RR 225/50ZR15 tires cost?

A single tire is $188.12 and a set of four is $752.48.

Can the Toyo Proxes RR 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 RR come in other sizes?

Yes — we stock 26 additional Proxes RR sizes besides 225/50ZR15. Fit only a size approved for your vehicle.

Other sizes of this model

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