Proxes R1R

About the Toyo Proxes R1R

Summer High Performance Passenger Car tire for Serious Street Driving in Sports Coupes and Sedans.

Features

* Silica-reinforced, high-grip tread compound* Unidirectional arrowhead tread design* Tapered center block edge* Multi-width EVAC channels* Stability control slits* Advanced autocross-inspired casing with modified radial construction* Toyo Tires' Limited Warranty

Benefits

* Improves grip for better handling and performance during high-spirited driving* Shallow grooves and a unidirectional pattern achieve balanced performance between wet and dry conditions* Stabilizes center block movement to decrease irregular wear * Helps to increase hydroplaning resistance* Improve water evacuation * Narrow width at the tire edge widens the shoulder block area to enhance steering* Provide resistance to irregular wear* Improve dry performance by maintaining block stiffness during aggressive braking* Improves steering response and handling by optimizing the contact patch shape

Understanding the 225/40ZR18 size

In the size code 225/40R18, 225 is the section width in millimetres (about 8.9"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 90 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 25.1".

The load index 88 means each tire supports up to 1,235 lbs — about 4,940 lbs across a full set of four. The speed symbol W certifies the tire to 168 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 AA 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 AA 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 $175.94 per tire, a full set of four costs $703.76. That is about 17% above the average of the 144 tires we stock in this size, reflecting its position in the range.