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General
General Altimax RT45 225/55R18 98V - 15582440000
General Altimax RT45 225/55R18 98V - 15582440000
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Looking for a 225/55R18 all season tire? The General Altimax RT45 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 service description on this tire decodes to a load index of 98 — a maximum load of 1,653 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.
Specifications
| Size | 225/55R18 |
| Tire Type | All Season |
| Service Description | 98V |
| Load Index | 98 |
| Speed Rating | V |
| Load Range | Standard Load |
| Section Width (mm) | 225 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 27.74 |
| Tread Depth (/32") | 11 |
| Treadwear | 700 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 700AA |
| Warranty | 65K |
Frequently asked questions
What kind of tire is the General Altimax RT45?
The General Altimax RT45 in 225/55R18 is a all season tire.
What are the treadwear and warranty ratings on the General Altimax RT45?
This tire carries a treadwear grade of 700, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 65K.
What does 98V mean on the General Altimax RT45?
98V breaks down as load index 98 — rated for 1,653 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.
Keep shopping
Shop all 225/55R18 tires, browse General tires, see every General Altimax RT45 size, or view all tires at ThreePiece.us.
- BRAND:
- General
- Model:
- Altimax RT45
- Size:
- 225/55R18
- Aspect Ratio:
- 55
- Load Index:
- 98
- Load Range:
- Standard Load
- Section Width:
- 225
- Service Description:
- 98V
- Speed Index:
- V
- Temperature:
- A
- Tire Rim Diameter:
- 27.74
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 700
- Tread Depth:
- 11
- UQTG:
- 700AA
- Warranty:
- 65K
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