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Advanta
Advanta ATX-850 LT275/65R18
Advanta ATX-850 LT275/65R18
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Shop the Advanta ATX-850 275/65R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 275/65R18 means
In the size 275/65R18, 275 is the section width in millimeters (10.83 in), 65 is the aspect ratio — the sidewall stands 65% as tall as the tire is wide, or 178.8 mm (7.04 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 32.07 inches, turning roughly 629 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 123 — a maximum load of 3,417 lbs per tire. The speed symbol S corresponds to a maximum sustained speed of 112 mph.
Specifications
| Size | LT275/65R18 |
| Service Description | 123S |
| Load Index | 123 |
| Speed Rating | S |
| Section Width (mm) | LT275 |
| Aspect Ratio | 65 |
| Temperature Grade | TIRE RIM DIAMETER=18TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY= |
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 123S mean on the Advanta ATX-850?
123S breaks down as load index 123 — rated for 3,417 lbs per tire — with an S speed rating, good for a maximum sustained 112 mph.
Will 275/65R18 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 275/65R18, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 275/65R18 tire in stock to compare options.
Keep shopping
Shop all 275/65R18 tires, browse Advanta tires, see every Advanta ATX-850 size, or view all tires at ThreePiece.us.
- BRAND:
- Advanta
- MODEL:
- ATX-850
- SIZE:
- LT275/65R18
- ASPECT RATIO:
- 65
- LOAD INDEX:
- 123
- SECTION WIDTH:
- LT275
- SERVICE DESCRIPTION:
- 123S
- SPEED INDEX:
- S
- TEMPERATURE:
- TIRE RIM DIAMETER=18TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY=
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