The Toyo Proxes Sport R is an extreme performance summer tire engineered for street-driven cars that see autocross, track days, and time attack. Its high-grip compound reaches operating temperature quickly and holds grip consistently as the tire wears, while a directional tread pattern with large shoulder blocks and a connected center rib stabilizes braking and cornering. A reinforced casing with a jointless cap ply keeps the tread face rigid at speed. With a 200 UTQG treadwear grade and 7/32in tread depth, it is street-legal (DOT) and eligible for many 200-treadwear competition classes.
| Type | Extreme Performance Summer tire |
| Size | 275/40ZR17 |
| Service Description | 98W |
| Load Index | 98 (1,653 lb max load) |
| Speed Rating | W (168 mph); ZR-rated construction |
| Load Range | Standard Load |
| Tread Depth | 7/32 in |
| UTQG Treadwear | 200 |
| Warranty | Limited warranty against manufacturing defects; no mileage warranty (competition-oriented tire) |
| Part Number | 178330 |
| Quantity | 1 (sold individually) |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
