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Pirelli
Pirelli Scorpion MS 255/40R21XL 102H - 4098800
Pirelli Scorpion MS 255/40R21XL 102H - 4098800
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The Pirelli Scorpion MS in 255/40R21 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 255/40R21 means
In the size 255/40R21, 255 is the section width in millimeters (10.04 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 102.0 mm (4.02 in) — R denotes radial construction, and 21 is the wheel diameter in inches. That works out to an overall diameter of about 29.03 inches, turning roughly 695 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 102 — a maximum load of 1,874 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | 255/40R21XL |
| Tire Type | All Season |
| Service Description | 102H |
| Load Index | 102 |
| Speed Rating | H |
| Load Range | Extra Load |
| Section Width (mm) | 255 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 29.02 |
| Tread Depth (/32") | 10 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 500AA |
Frequently asked questions
What does 102H mean on the Pirelli Scorpion MS?
102H breaks down as load index 102 — rated for 1,874 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.
What kind of tire is the Pirelli Scorpion MS?
The Pirelli Scorpion MS in 255/40R21 is a all season tire.
What are the treadwear and warranty ratings on the Pirelli Scorpion MS?
This tire carries a treadwear grade of 500, traction grade A, temperature grade A under UTQG.
Keep shopping
Shop all 255/40R21 tires, browse Pirelli tires, see every Pirelli Scorpion MS size, or view all tires at ThreePiece.us.
- BRAND:
- Pirelli
- Model:
- Scorpion MS
- Size:
- 255/40R21XL
- Aspect Ratio:
- 40
- Load Index:
- 102
- Load Range:
- Extra Load
- Section Width:
- 255
- Service Description:
- 102H
- Speed Index:
- H
- Temperature:
- A
- Tire Rim Diameter:
- 29.02
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 500
- Tread Depth:
- 10
- UQTG:
- 500AA
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