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Continental
Continental CON CST17 Spare 125/70R18
Continental CON CST17 Spare 125/70R18
This wheel on real customer builds
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Continental
UPC:
00051342020812
Lease-to-own for as low as
/week
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Width:
18.00
(in)
Height:
4.92
(in)
Depth:
18.00
(in)
SKU:
3115250000
|
$153.00
Lease-to-own for as low as
/week
Get Started
Guaranteed to Fit — confirm your size with the fitment checker on this page
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Shop the Continental CST17 Spare 125/70R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 125/70R18 means
In the size 125/70R18, 125 is the section width in millimeters (4.92 in), 70 is the aspect ratio — the sidewall stands 70% as tall as the tire is wide, or 87.5 mm (3.44 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 24.89 inches, turning roughly 810 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 99 — a maximum load of 1,709 lbs per tire. The speed symbol M corresponds to a maximum sustained speed of 81 mph.
Specifications
| Size | 125/70R18 |
| Tire Type | All-Season |
| Service Description | 99M |
| Load Index | 99 |
| Speed Rating | M |
| Load Range | SL |
| Section Width (mm) | 125 |
| Aspect Ratio | 70 |
| Overall Diameter (in) | 24.9 |
| Tread Depth (/32") | 5 |
Frequently asked questions
Will 125/70R18 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 125/70R18, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.
What does 99M mean on the Continental CST17 Spare?
99M breaks down as load index 99 — rated for 1,709 lbs per tire — with an M speed rating, good for a maximum sustained 81 mph.
What kind of tire is the Continental CST17 Spare?
The Continental CST17 Spare in 125/70R18 is a all-season tire.
Keep shopping
See every Continental CST17 Spare size, or view all tires at ThreePiece.us.
- BRAND:
- Continental
- Model:
- CON CST17 Spare
- Size:
- 125/70R18
- Aspect Ratio:
- 70
- Load Index:
- 99
- Load Range:
- SL
- Section Width:
- 125
- Service Description:
- 99M
- Speed Index:
- M
- Temperature:
- N/A
- Tire Rim Diameter:
- 24.9
- Tire Type:
- All-Season
- Traction:
- N/A
- Tread Wear:
- N/A
- Tread Depth:
- 5
- UQTG:
- N/A
- Warranty:
- N/A
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