Kumho KMH Ecsta PS31 235/50ZR18XL

The Kumho Ecsta PS31 in 235/50R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 235/50R18 means

In the size 235/50R18, 235 is the section width in millimeters (9.25 in), 50 is the aspect ratio — the sidewall stands 50% as tall as the tire is wide, or 117.5 mm (4.63 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 27.25 inches, turning roughly 740 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 101 — a maximum load of 1,819 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.

Specifications

Frequently asked questions

What does 101W mean on the Kumho Ecsta PS31?

101W breaks down as load index 101 — rated for 1,819 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.

What kind of tire is the Kumho Ecsta PS31?

The Kumho Ecsta PS31 in 235/50R18 is a high performance tire.

What are the treadwear and warranty ratings on the Kumho Ecsta PS31?

This tire carries a treadwear grade of 460, traction grade A, temperature grade A under UTQG.

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