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Gt Radial
GT Radial Adventuro HT P255/70R18 112T - AS129
GT Radial Adventuro HT P255/70R18 112T - AS129
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Looking for a 255/70R18 all season tire? The GT Radial Adventuro HT is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 255/70R18 means
In the size 255/70R18, 255 is the section width in millimeters (10.04 in), 70 is the aspect ratio — the sidewall stands 70% as tall as the tire is wide, or 178.5 mm (7.03 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 32.06 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 112 — a maximum load of 2,469 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.
Specifications
| Size | P255/70R18 |
| Tire Type | All Season |
| Service Description | 112T |
| Load Index | 112 |
| Speed Rating | T |
| Load Range | SL |
| Section Width (mm) | 255 |
| Aspect Ratio | 70 |
| Overall Diameter (in) | 32.1 |
| Tread Depth (/32") | 11 |
| Treadwear | 600 |
| Traction Grade | A |
| Temperature Grade | B |
| UTQG | 600AB |
| Warranty | 65K |
Frequently asked questions
What kind of tire is the GT Radial Adventuro HT?
The GT Radial Adventuro HT in 255/70R18 is a all season tire.
What are the treadwear and warranty ratings on the GT Radial Adventuro HT?
This tire carries a treadwear grade of 600, traction grade A, temperature grade B under UTQG. The manufacturer's warranty is 65K.
What does 112T mean on the GT Radial Adventuro HT?
112T breaks down as load index 112 — rated for 2,469 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.
Keep shopping
Shop all 255/70R18 tires, browse GT Radial tires, see every GT Radial Adventuro HT size, or view all tires at ThreePiece.us.
- BRAND:
- GT Radial
- Model:
- Adventuro HT
- Size:
- P255/70R18
- Aspect Ratio:
- 70
- Load Index:
- 112
- Load Range:
- SL
- Section Width:
- 255
- Service Description:
- 112T
- Speed Index:
- T
- Temperature:
- B
- Tire Rim Diameter:
- 32.1
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 600
- Tread Depth:
- 11
- UQTG:
- 600AB
- Warranty:
- 65K
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