Toyo Proxes RA1 Tire - 225/50ZR15

The Toyo Proxes RA1 is a DOT-marked competition tire for road racing. It uses a softer, durable rubber compound aimed at grip and competitive handling, and it comes with 8/32" of tread, which Toyo says helps wet traction. Toyo notes that once the tread is shaved down to 4/32", dry traction improves.

The stepped tread has more tread area and limited voids, with a groove layout meant to support both dry and wet grip. Staggered, directional tread blocks are designed to improve handling and reduce road noise, and tread-depth indicators near the shoulders let you measure wear. Toyo names race-prepared cars such as the BMW E30, Mazda Miata, Honda CRX, Honda Civic and Honda S2000 as typical applications.

Specifications for this tire: size 225/50ZR15; fits 15-inch wheels; section width 225 mm; aspect ratio 50; speed rating Z; overall diameter about 23.9 in (606 mm). Part number toy236830.

IMPORTANT: Competition use only. Toyo recommends the Proxes RA1 for competition events only. Operating-temperature, inflation and alignment recommendations are published by Toyo on the product page for this tire. Toyo publishes a cold-weather handling and storage advisory for its competition tires; read it before storing or moving these tires in freezing temperatures.