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Forceum
Forceum PENTA 265/40R21
Forceum PENTA 265/40R21
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Shop the Forceum PENTA 265/40R21 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 265/40R21 means
In the size 265/40R21, 265 is the section width in millimeters (10.43 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 106.0 mm (4.17 in) — R denotes radial construction, and 21 is the wheel diameter in inches. That works out to an overall diameter of about 29.35 inches, turning roughly 687 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 105 — a maximum load of 2,039 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.
Specifications
| Size | 265/40R21 |
| Service Description | 105Y |
| Load Index | 105 |
| Speed Rating | Y |
| Section Width (mm) | 265 |
| Aspect Ratio | 40 |
| Temperature Grade | ATIRE RIM DIAMETER=21TIRE TYPE=TRACTION=ATREAD WEAR=400TREAD DEPTH=UQTG=400 A AWARRANTY= |
Frequently asked questions
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 105Y mean on the Forceum PENTA?
105Y breaks down as load index 105 — rated for 2,039 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.
Will 265/40R21 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 265/40R21, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 265/40R21 tire in stock to compare options.
Keep shopping
Shop all 265/40R21 tires, browse Forceum tires, see every Forceum PENTA size, or view all tires at ThreePiece.us.
- BRAND:
- Forceum
- MODEL:
- PENTA
- SIZE:
- 265/40R21
- ASPECT RATIO:
- 40
- LOAD INDEX:
- 105
- SECTION WIDTH:
- 265
- SERVICE DESCRIPTION:
- 105Y
- SPEED INDEX:
- Y
- TEMPERATURE:
- ATIRE RIM DIAMETER=21TIRE TYPE=TRACTION=ATREAD WEAR=400TREAD DEPTH=UQTG=400 A AWARRANTY=
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