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DUNLOP
Dunlop SP Sport Maxx GT 255/40R21XL 102Y - 57001650
Dunlop SP Sport Maxx GT 255/40R21XL 102Y - 57001650
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DUNLOP
UPC:
00848983038388
Availability:
Y
Lease-to-own for as low as
/week
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Width:
10.20
(in)
Height:
29.00
(in)
Depth:
29.00
(in)
SKU:
57001650
|
$622.76
Lease-to-own for as low as
/week
Get Started
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The Dunlop SP Sport Maxx GT 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 Y corresponds to a maximum sustained speed of 186 mph.
Specifications
| Size | 255/40R21XL |
| Tire Type | Summer |
| Service Description | 102Y |
| Load Index | 102 |
| Speed Rating | Y |
| Load Range | XL |
| Section Width (mm) | 255 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 29 |
| Tread Depth (/32") | 9 |
| Treadwear | 240 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 240AAA |
Frequently asked questions
What does 102Y mean on the Dunlop SP Sport Maxx GT?
102Y breaks down as load index 102 — rated for 1,874 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.
What kind of tire is the Dunlop SP Sport Maxx GT?
The Dunlop SP Sport Maxx GT in 255/40R21 is a summer tire.
What are the treadwear and warranty ratings on the Dunlop SP Sport Maxx GT?
This tire carries a treadwear grade of 240, traction grade AA, temperature grade A under UTQG.
Keep shopping
Shop all 255/40R21 tires, browse Dunlop tires, see every Dunlop SP Sport Maxx GT size, or view all tires at ThreePiece.us.
- BRAND:
- Dunlop
- Model:
- SP Sport Maxx GT
- Size:
- 255/40R21XL
- Aspect Ratio:
- 40
- Load Index:
- 102
- Load Range:
- XL
- Section Width:
- 255
- Service Description:
- 102Y
- Speed Index:
- Y
- Temperature:
- A
- Tire Rim Diameter:
- 29
- Tire Type:
- Summer
- Traction:
- AA
- Tread Wear:
- 240
- Tread Depth:
- 9
- UQTG:
- 240AAA
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