Proxes RA1

About the Toyo Proxes RA1

DOT Competition Racing Car tire. Vehicle & Application Segment - Road Racing, Race-Prepared Vehicles, High Performance Street. Recommended for Competition Events Only.

Features

* Soft but durable R-Compound* Stepped tread design* Tread depth indicators* UTQG: 100 AA A* Toyo Tires' Limited Warranty

Benefits

* Improves grip for better competitive handling and performance* Increased tread area and limited void improves dry traction * Groove arrangement assists with wet traction* Circles in tread indicate tread depth * Full 8/32nds tread depth provides good competitive wet traction * Shaving to 6/32nds improves dry traction

Understanding the 275/40ZR17 size

In the size code 275/40R17, 275 is the section width in millimetres (about 10.8"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 110 mm. R17 means radial construction on a 17-inch wheel, giving an approximate overall diameter of 25.7".

What the Toyo Proxes RA1 is built for

Fitment category: Passenger Car, CAR, Competition/Racing, Performance, UHP.

Tread life and grip ratings

This tire carries a UTQG rating of 100 AA A. The treadwear grade of 100 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 $276.90 per tire, a full set of four costs $1107.60. That is about 52% above the average of the 30 tires we stock in this size, reflecting its position in the range.