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Carlisle
Carlisle Radial R-1W 420/85R30 140/137A8/B - 6A05692
Carlisle Radial R-1W 420/85R30 140/137A8/B - 6A05692
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The Carlisle Radial R-1W in 420/85R30 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 420/85R30 means
In the size 420/85R30, 420 is the section width in millimeters (16.54 in), 85 is the aspect ratio — the sidewall stands 85% as tall as the tire is wide, or 357.0 mm (14.06 in) — R denotes radial construction, and 30 is the wheel diameter in inches. That works out to an overall diameter of about 58.11 inches, turning roughly 347 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.
Specifications
| Size | 420/85R30 |
| Service Description | 140/137A8/B |
| Load Index | 140/137 |
| Speed Rating | A8/B |
| Section Width (mm) | 420 |
| Aspect Ratio | 85 |
| Overall Diameter (in) | 58.11 |
| Tread Depth (/32") | 60 |
Frequently asked questions
Will 420/85R30 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 420/85R30, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.
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.
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Browse Carlisle tires, see every Carlisle Radial R-1W size, or view all tires at ThreePiece.us.
- BRAND:
- Carlisle
- Model:
- Radial R-1W
- Size:
- 420/85R30
- Aspect Ratio:
- 85
- Load Index:
- 140/137
- Section Width:
- 420
- Service Description:
- 140/137A8/B
- Speed Index:
- A8/B
- Tire Rim Diameter:
- 58.11
- Tread Depth:
- 60
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