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Cooper
Cooper ProControl 235/40R18XL 95W - 166433021
Cooper ProControl 235/40R18XL 95W - 166433021
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The Cooper ProControl in 235/40R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 235/40R18 means
In the size 235/40R18, 235 is the section width in millimeters (9.25 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 94.0 mm (3.70 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 25.40 inches, turning roughly 794 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 95 — a maximum load of 1,521 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | 235/40R18XL |
| Tire Type | All Season |
| Service Description | 95W |
| Load Index | 95 |
| Speed Rating | W |
| Load Range | Extra Load |
| Section Width (mm) | 235 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 25.39 |
| Tread Depth (/32") | 10 |
| Warranty | 60K |
Frequently asked questions
What does 95W mean on the Cooper ProControl?
95W breaks down as load index 95 — rated for 1,521 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
What kind of tire is the Cooper ProControl?
The Cooper ProControl in 235/40R18 is a all season tire.
What warranty does the Cooper ProControl carry?
The manufacturer's warranty on this tire is 60K.
Keep shopping
Shop all 235/40R18 tires, browse Cooper tires, see every Cooper ProControl size, or view all tires at ThreePiece.us.
- BRAND:
- Cooper
- Model:
- ProControl
- Size:
- 235/40R18XL
- Aspect Ratio:
- 40
- Load Index:
- 95
- Load Range:
- Extra Load
- Section Width:
- 235
- Service Description:
- 95W
- Speed Index:
- W
- Tire Rim Diameter:
- 25.39
- Tire Type:
- All Season
- Tread Depth:
- 10
- Warranty:
- 60K
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