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General
General G-Max RS 285/40R18 101Y - 15592020000
General G-Max RS 285/40R18 101Y - 15592020000
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The General G-Max RS in 285/40R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 285/40R18 means
In the size 285/40R18, 285 is the section width in millimeters (11.22 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 114.0 mm (4.49 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 26.98 inches, turning roughly 748 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 101 — a maximum load of 1,819 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.
Specifications
| Size | 285/40R18 |
| Tire Type | Summer |
| Service Description | 101Y |
| Load Index | 101 |
| Speed Rating | Y |
| Load Range | Standard Load |
| Section Width (mm) | 285 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 26.98 |
| Tread Depth (/32") | 10 |
| Treadwear | 360 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 360AAA |
Frequently asked questions
What does 101Y mean on the General G-Max RS?
101Y breaks down as load index 101 — rated for 1,819 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.
What kind of tire is the General G-Max RS?
The General G-Max RS in 285/40R18 is a summer tire.
What are the treadwear and warranty ratings on the General G-Max RS?
This tire carries a treadwear grade of 360, traction grade AA, temperature grade A under UTQG.
Keep shopping
Browse General tires, see every General G-Max RS size, or view all tires at ThreePiece.us.
- BRAND:
- General
- Model:
- G-Max RS
- Size:
- 285/40R18
- Aspect Ratio:
- 40
- Load Index:
- 101
- Load Range:
- Standard Load
- Section Width:
- 285
- Service Description:
- 101Y
- Speed Index:
- Y
- Temperature:
- A
- Tire Rim Diameter:
- 26.98
- Tire Type:
- Summer
- Traction:
- AA
- Tread Wear:
- 360
- Tread Depth:
- 10
- UQTG:
- 360AAA
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