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Advanta
Advanta ATX-850 285/75R17
Advanta ATX-850 285/75R17
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Shop the Advanta ATX-850 285/75R17 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 285/75R17 means
In the size 285/75R17, 285 is the section width in millimeters (11.22 in), 75 is the aspect ratio — the sidewall stands 75% as tall as the tire is wide, or 213.8 mm (8.42 in) — R denotes radial construction, and 17 is the wheel diameter in inches. That works out to an overall diameter of about 33.83 inches, turning roughly 596 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 121 — a maximum load of 3,197 lbs per tire. The speed symbol S corresponds to a maximum sustained speed of 112 mph.
Specifications
| Size | 285/75R17 |
| Service Description | 121S |
| Load Index | 121 |
| Speed Rating | S |
| Section Width (mm) | 285 |
| Aspect Ratio | 75 |
| Temperature Grade | TIRE RIM DIAMETER=17TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY=50000 |
Frequently asked questions
How fast does this tire ship?
Every order at ThreePiece.us ships free, with fast delivery from a nationwide warehouse network. Affirm financing is available at checkout.
What does 121S mean on the Advanta ATX-850?
121S breaks down as load index 121 — rated for 3,197 lbs per tire — with an S speed rating, good for a maximum sustained 112 mph.
Will 285/75R17 tires fit my vehicle?
Check the size molded into your current tire's sidewall or the tire placard inside the driver's door jamb — if it reads 285/75R17, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 285/75R17 tire in stock to compare options.
Keep shopping
Shop all 285/75R17 tires, browse Advanta tires, see every Advanta ATX-850 size, or view all tires at ThreePiece.us.
- BRAND:
- Advanta
- MODEL:
- ATX-850
- SIZE:
- 285/75R17
- ASPECT RATIO:
- 75
- LOAD INDEX:
- 121
- SECTION WIDTH:
- 285
- SERVICE DESCRIPTION:
- 121S
- SPEED INDEX:
- S
- TEMPERATURE:
- TIRE RIM DIAMETER=17TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY=50000
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