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Yokohama
Yokohama YOK Geolandar G055 225/55R18
Yokohama YOK Geolandar G055 225/55R18
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Looking for a 225/55R18 touring tire? The Yokohama Geolandar G055 is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 225/55R18 means
In the size 225/55R18, 225 is the section width in millimeters (8.86 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 123.8 mm (4.87 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 27.74 inches, turning roughly 727 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 manufacturer lists the overall diameter of this specific tire as 18 inches — when clearance is tight, go by the published figure rather than the nominal size math.
The service description on this tire decodes to a load index of 98 — a maximum load of 1,653 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.
Specifications
| Size | 225/55R18 |
| Tire Type | Touring |
| Service Description | 98H |
| Load Index | 98 |
| Speed Rating | H |
| Load Range | SL |
| Section Width (mm) | 225 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 18 |
| Tread Depth (/32") | 11 |
| Treadwear | 740 |
| Traction Grade | B |
| Temperature Grade | A |
| UTQG | 740BA |
Frequently asked questions
What kind of tire is the Yokohama Geolandar G055?
The Yokohama Geolandar G055 in 225/55R18 is a touring tire.
What are the treadwear and warranty ratings on the Yokohama Geolandar G055?
This tire carries a treadwear grade of 740, traction grade B, temperature grade A under UTQG.
What does 98H mean on the Yokohama Geolandar G055?
98H breaks down as load index 98 — rated for 1,653 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.
Keep shopping
Shop all 225/55R18 tires, see every Yokohama Geolandar G055 size, or view all tires at ThreePiece.us.
- BRAND:
- Yokohama
- Model:
- YOK Geolandar G055
- Size:
- 225/55R18
- Aspect Ratio:
- 55
- Load Index:
- 98
- Load Range:
- SL
- Section Width:
- 225
- Service Description:
- 98H
- Speed Index:
- H
- Temperature:
- A
- Tire Rim Diameter:
- 18
- Tire Type:
- Touring
- Traction:
- B
- Tread Wear:
- 740
- Tread Depth:
- 11
- UQTG:
- 740BA
- Warranty:
- N/A
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