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General Tire
General Tire GEN G-MAX AS-05 275/40ZR18
General Tire GEN G-MAX AS-05 275/40ZR18
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The General Tire G-MAX AS-05 in 275/40R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 275/40R18 means
In the size 275/40R18, 275 is the section width in millimeters (10.83 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 110.0 mm (4.33 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 26.66 inches, turning roughly 756 revolutions per mile. Overall diameter is what matters for speedometer accuracy and clearance when you change sizes, so compare it — not just the width — against your current tire.
The service description on this tire decodes to a load index of 99 — a maximum load of 1,709 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Specifications
| Size | 275/40ZR18 |
| Tire Type | High Performance |
| Service Description | 99W |
| Load Index | 99 |
| Speed Rating | W |
| Load Range | SL |
| Section Width (mm) | 275 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 26.7 |
| Tread Depth (/32") | 10 |
| Treadwear | 500 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 500AAA |
| Warranty | 50K |
Frequently asked questions
What does 99W mean on the General Tire G-MAX AS-05?
99W breaks down as load index 99 — rated for 1,709 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
What kind of tire is the General Tire G-MAX AS-05?
The General Tire G-MAX AS-05 in 275/40R18 is a high performance tire.
What are the treadwear and warranty ratings on the General Tire G-MAX AS-05?
This tire carries a treadwear grade of 500, traction grade AA, temperature grade A under UTQG. The manufacturer's warranty is 50K.
Keep shopping
Shop all 275/40R18 tires, see every General Tire G-MAX AS-05 size, or view all tires at ThreePiece.us.
- BRAND:
- General Tire
- Model:
- GEN G-MAX AS-05
- Size:
- 275/40ZR18
- Aspect Ratio:
- 40
- Load Index:
- 99
- Load Range:
- SL
- Section Width:
- 275
- Service Description:
- 99W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 26.7
- Tire Type:
- High Performance
- Traction:
- AA
- Tread Wear:
- 500
- Tread Depth:
- 10
- UQTG:
- 500AAA
- Warranty:
- 50K
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