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General
General G-Max RS 285/30R20XL 99Y - 15592300000
General G-Max RS 285/30R20XL 99Y - 15592300000
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Shop the General G-Max RS 285/30R20 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 285/30R20 means
In the size 285/30R20, 285 is the section width in millimeters (11.22 in), 30 is the aspect ratio — the sidewall stands 30% as tall as the tire is wide, or 85.5 mm (3.37 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 26.73 inches, turning roughly 754 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 Y corresponds to a maximum sustained speed of 186 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | 285/30R20XL |
| Tire Type | Summer |
| Service Description | 99Y |
| Load Index | 99 |
| Speed Rating | Y |
| Load Range | Extra Load |
| Section Width (mm) | 285 |
| Aspect Ratio | 30 |
| Overall Diameter (in) | 26.73 |
| Tread Depth (/32") | 10 |
| Treadwear | 360 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 360AAA |
Frequently asked questions
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.
What does 99Y mean on the General G-Max RS?
99Y breaks down as load index 99 — rated for 1,709 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 285/30R20 is a summer tire.
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:
- 285/30R20XL
- Aspect Ratio:
- 30
- Load Index:
- 99
- Load Range:
- Extra Load
- Section Width:
- 285
- Service Description:
- 99Y
- Speed Index:
- Y
- Temperature:
- A
- Tire Rim Diameter:
- 26.73
- Tire Type:
- Summer
- Traction:
- AA
- Tread Wear:
- 360
- Tread Depth:
- 10
- UQTG:
- 360AAA
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