Toyo
Proxes RA1
255/40ZR17
$220.78/tire
$294.37
Set of 4: $883.12
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↩️ Free returns within 30 days — unmounted tires, prepaid label, no return shipping cost.
Specifications
| Size | 255/40ZR17 Proxes RA1 (Dot Approved For Racing Purposes ONLY) |
|---|---|
| Width | 255 mm |
| Aspect ratio | 40 |
| Rim diameter | R17 |
| Load range | SL |
| UTQG | 100 AA A |
|---|---|
| Tread depth | 8/32" |
| Weight | 26 lbs |
| Max pressure | 44 psi |
| Severe snow (3PMSF) | No |
| Run-flat | No |
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 255/40ZR17 size
In the size code 255/40R17, 255 is the section width in millimetres (about 10"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 102 mm. R17 means radial construction on a 17-inch wheel, giving an approximate overall diameter of 25".
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 $220.78 per tire, a full set of four costs $883.12. That is about 29% above the average of the 33 tires we stock in this size, reflecting its position in the range.
Frequently asked questions
What does the tire size 255/40R17 mean?
255 is the section width in millimetres, 40 is the aspect ratio (sidewall height as a percentage of width, about 102 mm), and R17 indicates radial construction for a 17-inch wheel. Overall diameter is approximately 25 inches.
How much does a set of 4 Toyo Proxes RA1 255/40ZR17 tires cost?
A single tire is $220.78 and a set of four is $883.12.
Does the Proxes RA1 come in other sizes?
Yes — we stock 10 additional Proxes RA1 sizes besides 255/40ZR17. Fit only a size approved for your vehicle.
