Yokohama YOK Advan Sport A/S+ 215/55R17/4

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What 215/55R17 means

In the size 215/55R17, 215 is the section width in millimeters (8.46 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 118.3 mm (4.66 in) — R denotes radial construction, and 17 is the wheel diameter in inches. That works out to an overall diameter of about 26.31 inches, turning roughly 767 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 manufacturer lists the overall diameter of this specific tire as 17 inches — when clearance is tight, go by the published figure rather than the nominal size math.

The service description on this tire decodes to a load index of 94 — a maximum load of 1,477 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.

Specifications

Frequently asked questions

What are the treadwear and warranty ratings on the Yokohama Advan Sport A/S+?

This tire carries a treadwear grade of 440, traction grade AA, temperature grade A under UTQG. The manufacturer's warranty is 55K.

What does 94W mean on the Yokohama Advan Sport A/S+?

94W breaks down as load index 94 — rated for 1,477 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.

What kind of tire is the Yokohama Advan Sport A/S+?

The Yokohama Advan Sport A/S+ in 215/55R17 is a high performance tire.

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