Continental CON ProContact TX FR 315/35R21XL

The Continental ProContact TX in 315/35R21 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 315/35R21 means

In the size 315/35R21, 315 is the section width in millimeters (12.40 in), 35 is the aspect ratio — the sidewall stands 35% as tall as the tire is wide, or 110.2 mm (4.34 in) — R denotes radial construction, and 21 is the wheel diameter in inches. That works out to an overall diameter of about 29.68 inches, turning roughly 679 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 29.9 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 111 — a maximum load of 2,403 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.

Specifications

Frequently asked questions

What does 111V mean on the Continental ProContact TX?

111V breaks down as load index 111 — rated for 2,403 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.

What kind of tire is the Continental ProContact TX?

The Continental ProContact TX in 315/35R21 is a touring tire.

What are the treadwear and warranty ratings on the Continental ProContact TX?

This tire carries a treadwear grade of 400, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 45K.

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