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Cooper
Cooper Discoverer SRX 255/70R18 113T - 166546019
Cooper Discoverer SRX 255/70R18 113T - 166546019
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Cooper
UPC:
00029142815112
Availability:
Y
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/week
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Width:
10.30
(in)
Height:
32.17
(in)
Depth:
32.17
(in)
SKU:
166546019
|
$287.71
Lease-to-own for as low as
/week
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The Cooper Discoverer SRX in 255/70R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
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 113 — a maximum load of 2,535 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.
Specifications
| Size | 255/70R18 |
| Tire Type | All Season |
| Service Description | 113T |
| Load Index | 113 |
| Speed Rating | T |
| Load Range | SL |
| Section Width (mm) | 255 |
| Aspect Ratio | 70 |
| Overall Diameter (in) | 32.17 |
| Tread Depth (/32") | 12.5 |
| Treadwear | 740 |
| Traction Grade | A |
| Temperature Grade | B |
| UTQG | 740AB |
| Warranty | 75K |
Frequently asked questions
What does 113T mean on the Cooper Discoverer SRX?
113T breaks down as load index 113 — rated for 2,535 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.
What kind of tire is the Cooper Discoverer SRX?
The Cooper Discoverer SRX in 255/70R18 is a all season tire.
What are the treadwear and warranty ratings on the Cooper Discoverer SRX?
This tire carries a treadwear grade of 740, traction grade A, temperature grade B under UTQG. The manufacturer's warranty is 75K.
Keep shopping
Shop all 255/70R18 tires, browse Cooper tires, see every Cooper Discoverer SRX size, or view all tires at ThreePiece.us.
- BRAND:
- Cooper
- Model:
- Discoverer SRX
- Size:
- 255/70R18
- Aspect Ratio:
- 70
- Load Index:
- 113
- Load Range:
- SL
- Section Width:
- 255
- Service Description:
- 113T
- Speed Index:
- T
- Temperature:
- B
- Tire Rim Diameter:
- 32.17
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 740
- Tread Depth:
- 12.5
- UQTG:
- 740AB
- Warranty:
- 75K
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