Continental CON CST17 Spare 125/70R15

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What 125/70R15 means

In the size 125/70R15, 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 15 is the wheel diameter in inches. That works out to an overall diameter of about 21.89 inches, turning roughly 921 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 M corresponds to a maximum sustained speed of 81 mph.

Specifications

Frequently asked questions

Will 125/70R15 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 125/70R15, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.

What does 95M mean on the Continental CST17 Spare?

95M breaks down as load index 95 — rated for 1,521 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 125/70R15 is a all-season tire.

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