Write a Review
Accelera
Accelera Iota ST68 255/60R18
Accelera Iota ST68 255/60R18
📧 Get Fitment Help
Verify parts fit & get product recommendations
Lease-to-own for as low as
/week
Get Started
Guaranteed to Fit — confirm your size with the fitment checker on this page
Price Match Guarantee Learn More
Free Mount & Balance
Free Shipping
OUT OF STOCK 
📧 Get Fitment Help
Verify parts fit & get product recommendations
The Accelera Iota ST68 in 255/60R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 255/60R18 means
In the size 255/60R18, 255 is the section width in millimeters (10.04 in), 60 is the aspect ratio — the sidewall stands 60% as tall as the tire is wide, or 153.0 mm (6.02 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 30.05 inches, turning roughly 671 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 89 — a maximum load of 1,279 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.
Specifications
| Size | 255/60R18 |
| Service Description | 89V |
| Load Index | 89 |
| Speed Rating | V |
| Load Range | XL |
| Section Width (mm) | 255 |
| Aspect Ratio | 60 |
| Temperature Grade | TIRE RIM DIAMETER=18TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY= |
Frequently asked questions
What does 89V mean on the Accelera Iota ST68?
89V breaks down as load index 89 — rated for 1,279 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.
Will 255/60R18 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 255/60R18, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 255/60R18 tire in stock to compare options.
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.
Keep shopping
Shop all 255/60R18 tires, browse Accelera tires, see every Accelera Iota ST68 size, or view all tires at ThreePiece.us.
- BRAND:
- Accelera
- MODEL:
- Iota ST68
- SIZE:
- 255/60R18
- ASPECT RATIO:
- 60
- LOAD INDEX:
- 89
- LOAD RANGE:
- XL
- SECTION WIDTH:
- 255
- SERVICE DESCRIPTION:
- 89V
- SPEED INDEX:
- V
- TEMPERATURE:
- TIRE RIM DIAMETER=18TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY=
PRODUCT REVIEWS (0)
Overall Rankings
Have you tried this product?
WRITE A REVIEWNo reviews for this product yet. Be the first to write a review!
Write a Review