Toyo

Proxes R

Name: Toyo Proxes R 315/30ZR20
Brand: Toyo
SKU: 255520
Price: 424.88 USD
Availability: InStock

315/30ZR20

Summer

$424.88/tire $566.51

Set of 4: $1699.52

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Specifications

Size	315/30ZR20 Proxes R (Dot Approved For Racing Purposes ONLY)
Width	315 mm
Aspect ratio	30
Rim diameter	R20
Load index	101
Speed rating	(Y)
Load range	SL

Season	Summer
UTQG	40 C A
Tread depth	3.7/32"
Weight	30.6 lbs
Max pressure	51 psi
Severe snow (3PMSF)	No
Run-flat	No

About the Toyo Proxes R

DOT Competition Car Tire Designed for Dry Road Racing. NOT FOR HIGHWAY USE.

Features

* Improved racing tread compound* Wear inspection markers* Newly reinforced sidewall and high-modulus bead filler* Optimized contact patch* DOT Approved for racing purposes only

Benefits

* Increase grip and improve lap times* Indicate wear patterns and longevity* Provides more stability and steering response* Increases footprint length and contact area for improved braking and cornering performance

Understanding the 315/30ZR20 size

In the size code 315/30R20, 315 is the section width in millimetres (about 12.4"). 30 is the aspect ratio — the sidewall height is 30% of the width, or roughly 94.5 mm. R20 means radial construction on a 20-inch wheel, giving an approximate overall diameter of 27.4".

The load index 101 means each tire supports up to 1,819 lbs — about 7,276 lbs across a full set of four. The speed symbol Y certifies the tire to 186 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

What the Toyo Proxes R is built for

The Toyo Proxes R 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 $424.88 per tire, a full set of four costs $1699.52. That is about 14% below the average price of the 12 tires we stock in this size.

Frequently asked questions

What does the tire size 315/30R20 mean?

315 is the section width in millimetres, 30 is the aspect ratio (sidewall height as a percentage of width, about 94.5 mm), and R20 indicates radial construction for a 20-inch wheel. Overall diameter is approximately 27.4 inches.

What are the load and speed ratings of the Toyo Proxes R 315/30ZR20?

Its load index of 101 allows up to 1,819 lbs per tire. Its speed rating of Y is certified to 186 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.

How much does a set of 4 Toyo Proxes R 315/30ZR20 tires cost?

A single tire is $424.88 and a set of four is $1699.52.

Can the Toyo Proxes R 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 R come in other sizes?

Yes — we stock 25 additional Proxes R sizes besides 315/30ZR20. Fit only a size approved for your vehicle.