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Compact Wheel Fitment Grip for Lightweight Sports Cars
The Toyo Proxes Sport R in 205/50R15 is an extreme performance summer tire sized for lightweight sports cars and classic performance platforms running 15 inch wheels. A high grip compound reaches its ideal operating window quickly and stays consistent through the full wear life, while a directional tread pattern with large shoulder blocks and a reinforced casing deliver a long, stable contact patch for confident braking and cornering. TOY178250 carries a 200 AA A UTQG treadwear rating built to meet competitive racing class tread depth requirements.
Key Features
- Extreme performance summer compound designed for autocross, time attack, and HPDE use
- Directional tread pattern with large shoulder blocks for maximum road contact
- Reinforced casing with jointless cap ply construction for tread rigidity and even wear
- High grip tread compound reaches optimal operating temperature quickly
- 200 AA A UTQG treadwear rating meets 7/32 inch tread depth specification for competitive racing classes
- Extra Load (XL) construction sized for classic and lightweight 15 inch wheel fitments
Specifications
| Detail | Value |
|---|---|
| MPN | TOY178250 |
| Tire Size | 205/50R15 |
| Load Index / Speed Rating | 89V |
| Load Range | Extra Load (XL) |
| UTQG | 200 AA A |
| Overall Diameter | 23.1 in |
| Section Width | 8.4 in |
| Approved Rim Width Range | 5.5 to 7.5 in |
| Max Load | 1279 lbs |
| Max Inflation Pressure | 50 PSI |
| UPC | 4981910012290 |
What's Included
- One Toyo Proxes Sport R tire, size 205/50R15 89V XL
- Manufacturer limited warranty documentation
About Toyo
Toyo Tires has engineered performance tires for street and track enthusiasts for decades, combining motorsport derived compounds with daily drivability. The Proxes lineup is developed for drivers who want race proven grip without sacrificing comfort on the commute, and the Sport R extends that philosophy into extreme performance summer applications for autocross, time attack, and endurance racing.
FAQ
What is the TOY178250?This Toyo Proxes Sport R is an extreme performance summer tire in size 205/50R15 with an 89V load index and speed rating and an Extra Load (XL) construction, built for autocross, time attack, and HPDE driving.
What vehicles commonly run a 205/50R15 tire size?This compact size fits many lightweight sports cars, classic muscle cars, and small performance coupes running 15 inch wheels for autocross and track day use.
Is the Proxes Sport R suitable for daily driving?Yes. While engineered for extreme performance applications like autocross and track days, the Proxes Sport R retains street manners for daily commuting in dry and wet conditions during warm weather months.
What is the UTQG rating on this tire?This tire carries a 200 AA A UTQG rating, meaning a treadwear score of 200 with the highest available traction (AA) and temperature (A) grades.
Can the Proxes Sport R be used in winter conditions?No. This is a summer performance tire and is not designed or rated for snow, ice, or cold weather traction. A dedicated winter tire is recommended for those conditions.
What is the load range of this tire?This tire is built in Extra Load (XL) construction, rated to carry up to 1279 lbs at a maximum inflation pressure of 50 PSI.
Does the Proxes Sport R meet competitive racing tread depth requirements?Yes. The Proxes Sport R meets the 7/32 inch tread depth specification required by many competitive racing classes for autocross and time attack competition.
How does the directional tread pattern improve performance?The directional design with large shoulder blocks creates a long, stable contact patch that improves braking performance, cornering stability, and wet traction compared to a symmetrical pattern.
Install Instructions
- Have the tire professionally mounted and balanced on a compatible 5.5 to 7.5 inch wide wheel.
- Inflate to the vehicle manufacturer's recommended cold tire pressure, not exceeding 50 PSI maximum.
- Perform a wheel alignment check to ensure proper camber and toe settings for even wear.
- Break in the tire gradually over the first 100 miles before subjecting it to aggressive track or autocross use.
- Rotate tires according to the vehicle manufacturer's recommended interval to promote even wear.
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TOYO
At Toyo Tires, our mission is clear: We make tires people love! Our dedicated team embodies the company’s five core values—Trust, Learn, Tenacity, Ownership, and Empathy—ensuring that every tire we produce meets the highest standards of excellence. Service, Style, and Exceptional Tires! Toyo Tire U.S.A. Corp., based in Costa Mesa, California, has been a pioneer in the tire industry since its founding in 1966. As the marketing and sales subsidiary for the Toyo Tires® brand in the United States, we pride ourselves on delivering innovative, high-quality products that cater to a diverse range of customers. Why Choose Toyo Tires? Global Presence: We operate development, manufacturing, testing, distribution, and marketing across the Americas, Europe, Asia, the Middle East, and Oceania. Wide Product Range: Our selection includes premium replacement tires for light trucks, SUVs, high-performance cars, luxury vehicles, and commercial trucks. Manufactured in the USA: Many of our tires a...
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