The 275/30R18 has an overall diameter of 62.2 cm. The T&RA recommended rim width for a 275mm section width is 8–10 inches, with a measuring rim of 9 inches. This page lists 52 compatible alternatives within 3% of the original diameter. Sizes are organized by wheel diameter. Within each section, the closest match per treadwidth is shown in italics. All sizes are theoretical and there may not be an actual production tire for the size.
275/30R18 Specifications
Current Tire Pricing
| Tire | Size | Price/Tire |
|---|---|---|
| Alternative Sizes · 285/30R18 | ||
| Bridgestone Potenza RE-71RZExtreme Performance Summer | 285/30R18 | $404.99 |
| Bridgestone Potenza RE-71RSExtreme Performance Summer | 285/30R18 | $364.84 |
| Nankang Sportnex CR-SExtreme Performance Summer | 285/30R18 | $379.00 |
| Falken Azenis RT660+Extreme Performance Summer | 285/30R18 | $371.36 |
| Michelin Pilot Sport Cup 2 (240)Extreme Performance Summer | 285/30R18 | $455.99 |
| Continental ExtremeContact SportMax Performance Summer | 285/30R18 | $338.99 |
| Michelin Pilot Sport 4SMax Performance Summer | 285/30R18 | $375.99 |
Price availability updated May 2026. Actual prices may vary.
Tire Recommendations
Extreme Performance Summer
Track days, autocross, and maximum dry grip
Bridgestone Potenza RE-71RZ
Treadwear: 200
Nankang Sportnex CR-S
Treadwear: 200
Vitour Tempesta P1 P-01R
Treadwear: 200
Falken Azenis RT660+
Treadwear: 200
Max Performance Summer
Spirited street driving and occasional track use
Continental ExtremeContact Sport
Treadwear: 340
Michelin Pilot Sport 4S
Treadwear: 300
Ultra High Performance All-Season
Year-round daily driving with performance capability
Michelin Pilot Sport All Season 4
Treadwear: 540
Grand Touring All-Season
Comfortable, long-wearing all-season tires for daily driving
How to Use This Information
- Stay within 3%: All listed tire sizes maintain proper speedometer accuracy and vehicle dynamics
- Consider aspect ratio: Lower numbers mean shorter sidewalls (better handling, harsher ride)
- Treadwidth matters: Wider tires typically offer more grip but may reduce fuel economy
- Check clearance: Ensure your vehicle has adequate wheel well and suspension clearance
Want to look up compatibility for a different tire size? Use our tire size compatibility lookup