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Achilles
Achilles ATR-K Economist 165/40R18
Achilles ATR-K Economist 165/40R18
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Looking for a 165/40R18 tire? The Achilles ATR-K Economist is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 165/40R18 means
In the size 165/40R18, 165 is the section width in millimeters (6.50 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 66.0 mm (2.60 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 23.20 inches, turning roughly 869 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 102 — a maximum load of 1,874 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.
Specifications
| Size | 165/40R18 |
| Service Description | 102H |
| Load Index | 102 |
| Speed Rating | H |
| Load Range | XL |
| Section Width (mm) | 165 |
| Aspect Ratio | 40 |
| Temperature Grade | TIRE RIM DIAMETER=18TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY= |
Frequently asked questions
Will 165/40R18 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 165/40R18, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.
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 102H mean on the Achilles ATR-K Economist?
102H breaks down as load index 102 — rated for 1,874 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.
Keep shopping
Browse Achilles tires, see every Achilles ATR-K Economist size, or view all tires at ThreePiece.us.
- BRAND:
- Achilles
- MODEL:
- ATR-K Economist
- SIZE:
- 165/40R18
- ASPECT RATIO:
- 40
- LOAD INDEX:
- 102
- LOAD RANGE:
- XL
- SECTION WIDTH:
- 165
- SERVICE DESCRIPTION:
- 102H
- SPEED INDEX:
- H
- TEMPERATURE:
- TIRE RIM DIAMETER=18TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY=
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