Toyo Proxes R1R Tire - 225/45ZR15 87W

The Toyo Proxes R1R is an extreme performance summer tire for cars, aimed at spirited driving and quick acceleration. Toyo uses a silica-reinforced rubber compound to build grip, and a directional, arrowhead-style tread that aims to balance wet and dry traction.

Details that matter on a fast lap: tapered center-block edges and stability slits intended to reduce uneven wear and keep the blocks stiff under hard braking, multi-width drainage channels to move water and sharpen shoulder-block response, and an autocross-inspired modified radial casing that Toyo says improves steering response.

Specifications for this tire: size 225/45ZR15 87W; fits 15-inch wheels; section width 225 mm; aspect ratio 45; load index 87; speed rating W; overall diameter about 23.0 in (584 mm). Part number toy173280.

IMPORTANT: Summer tire. Toyo rates it zero for winter handling, so plan on a separate winter set.