1997-2004 C5 Kumho Ecsta PS31 Summer Tire 245/45ZR17
The Ecsta PS31 is Kumho's Ultra High Performance Summer tire developed for drivers who emphasize handling and performance in dry and wet conditions for their Corvette. Like all summer tires, the Ecsta PS31 is not intended to be driven in near freezing temperatures, through snow or on ice.
A high-technology summer compound features High Dispersible Micro Silica for a more even distribution of silica throughout the contact patch and High Grip Resin to enhance dry and wet traction. The compound is molded into a directional tread pattern with a solid center rib for improved high-speed stability and 3D Dimple Design heat dimples help minimize heat buildup in the tread blocks, increasing durability for reduced wear. Optimized lateral groove angles resist irregular wear while maximizing water displacement during wet-weather cornering, and the four wide, circumferential main grooves work with diagonal-sipe microgrooves to evacuate water from the footprint for hydroplaning resistance.
The Ecsta PS31 features a computer-simulated structure to provide uniform contact pressure for even wear, and the reinforced internal construction includes a two-ply polyester casing beneath twin wide, steel belts and two full layer nylon cap plies for improved impact resistance, high-speed handling and durability.
- Fits 1997-2004 Corvettes
- Fits Base Models & Z51 Equipped
- Fits Front Only
- Fits Factory Wheels
- Does NOT Fit Z06s
- Summer Use Only
- Sold Individually
- High Dispersible Micro Silica Compound
- More Even Distribution of Silica Throughout Contact Patch
- High Grip Resin
- Enhanced Dry & Wet Traction
- Directional Tread Pattern
- Solid Center Rib for Improved High-Speed Stability
- 3D Dimple Design Heat Dimples to Minimize Heat Buildup
- Increased Durability for Reduced Wear
- Optimized Lateral Groove Angles Resist Irregular Wear
- Maximized Water Displacement During Wet-Weather Cornering
- Four-Wide Circumferential Main Grooves Improve Hydroplane Resistance
- Uniform Contact Pressure for Even Wear
- Two-Ply Polyester Casing
- Twin-Wide Steel Belts
- Two Full Layer Nylon Cap Plies
- Improved Impact Resistance, High-Speed Handling, & Durability
Tire Specs:
- 245/45ZR17
- Summer Only
- Blackwall
- Max Load: 1,521lbs
- Max Inflation: 51psi
- Tread Depth: 10.5/32"
- Weight: 25lbs
- Rim Width Range: 7.5-9"
- Measured Rim Width: 8"
- Section Width: 9.6"
- Tread Width: 8.5"
- Overall Diameter: 25.7"
- Revs Per Mile: 778
Also known under these part numbers: (For reference only)
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C5 1997-2004 Corvette Wheel & Tire Reference Guide
When purchasing new tires or wheels for your 1997-2004 Corvette, always refer to the measurements of the wheels and tires that came on your Corvette from the assembly plant. You can be certain that the information on this chart is accurate and correct for C5 Corvettes. When choosing custom or updated wheels, view the clearly marked fi tment years and sizes to ensure the best ride and continued safety while cruising!
| Year | Model | Wheel Location | Wheel Size | Offset | Backspacing | Tire Size |
| 1997 | Corvette | Front | 17" x 8.5" | (+) 56mm | 6.5" | 245/45ZR-17 |
| | Rear | 18" x 9.5" | (+) 61mm | 7.15" | 275/40ZR-18 |
| 1998 | Corvette | Front | 17" x 8.5" | (+) 56mm | 6.5" | 245/45ZR-17 |
| | Rear | 18" x 9.5" | (+) 61mm | 7.15" | 275/40ZR-18 |
| 1999 | Corvette | Front | 17" x 8.5" | (+) 56mm | 6.5" | 245/45ZR-17 |
| | Rear | 18" x 9.5" | (+) 61mm | 7.15" | 275/40ZR-18 |
| 2000 | Corvette | Front | 17" x 8.5" | (+) 58mm | 6.5" | 245/45ZR-17 |
| | Rear | 18" x 9.5" | (+) 65mm | 7.35" | 275/40ZR-18 |
| 2001 | Corvette | Front | 17" x 8.5" | (+) 58mm | 6.5" | 245/45ZR-17 |
| | Rear | 18" x 9.5" | (+) 65mm | 7.35" | 275/40ZR-18 |
| Z06 | Front | 17" x 9.5" | (+) 54mm | 6.9" | 265/40ZR-17 |
| | Rear | 18" x 10.5" | (+) 58mm | 7.55" | 295/35ZR-18 |
| 2002 | Corvette | Front | 17" x 8.5" | (+) 58mm | 6.5" | 245/45ZR-17 |
| | Rear | 18" x 9.5" | (+) 65mm | 7.35" | 275/40ZR-18 |
| Z06 | Front | 17" x 9.5" | (+) 54mm | 6.9" | 265/40ZR-17 |
| | Rear | 18" x 10.5" | (+) 58mm | 7.55" | 295/35ZR-18 |
| 2003 | Corvette | Front | 17" x 8.5" | (+) 58mm | 6.5" | 245/45ZR-17 |
| | Rear | 18" x 9.5" | (+) 65mm | 7.35" | 275/40ZR-18 |
| Z06 | Front | 17" x 9.5" | (+) 54mm | 6.9" | 265/40ZR-17 |
| Rear | | 18" x 10.5" | (+) 58mm | 7.55" | 295/35ZR-18 |
| 2004 | Corvette | Front | 17" x 8.5" | (+) 58mm | 6.5" | 245/45ZR-17 |
| Rear | | 18" x 9.5" | (+) 65mm | 7.35" | 275/40ZR-18 |
| Z06 | Front | 17" x 9.5" | (+) 54mm | 6.9" | 265/40ZR-17 |
| Rear | | 18" x 10.5" | (+) 58mm | 7.55" | 295/35ZR-18 |
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