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General Tire
General Tire GEN G-MAX AS-05 245/40ZR20XL
General Tire GEN G-MAX AS-05 245/40ZR20XL
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Looking for a 245/40R20 high performance tire? The General Tire G-MAX AS-05 is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 245/40R20 means
In the size 245/40R20, 245 is the section width in millimeters (9.65 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 98.0 mm (3.86 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 27.72 inches, turning roughly 728 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 | 245/40ZR20XL |
| Tire Type | High Performance |
| Service Description | 99W |
| Load Index | 99 |
| Speed Rating | W |
| Load Range | XL |
| Section Width (mm) | 245 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 27.7 |
| Tread Depth (/32") | 10 |
| Treadwear | 500 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 500AAA |
| Warranty | 50K |
Frequently asked questions
What kind of tire is the General Tire G-MAX AS-05?
The General Tire G-MAX AS-05 in 245/40R20 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.
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.
Keep shopping
Shop all 245/40R20 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:
- 245/40ZR20XL
- Aspect Ratio:
- 40
- Load Index:
- 99
- Load Range:
- XL
- Section Width:
- 245
- Service Description:
- 99W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 27.7
- Tire Type:
- High Performance
- Traction:
- AA
- Tread Wear:
- 500
- Tread Depth:
- 10
- UQTG:
- 500AAA
- Warranty:
- 50K
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