Mastercraft Glacier MSR 255/70R17 112T - 177109011

The Mastercraft Glacier MSR in 255/70R17 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 255/70R17 means

In the size 255/70R17, 255 is the section width in millimeters (10.04 in), 70 is the aspect ratio — the sidewall stands 70% as tall as the tire is wide, or 178.5 mm (7.03 in) — R denotes radial construction, and 17 is the wheel diameter in inches. That works out to an overall diameter of about 31.06 inches, turning roughly 649 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 31.3 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 112 — a maximum load of 2,469 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.

Specifications

Frequently asked questions

What does 112T mean on the Mastercraft Glacier MSR?

112T breaks down as load index 112 — rated for 2,469 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.

What kind of tire is the Mastercraft Glacier MSR?

The Mastercraft Glacier MSR in 255/70R17 is a winter tire.

Will 255/70R17 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 255/70R17, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 255/70R17 tire in stock to compare options.

Keep shopping

Shop all 255/70R17 tires, browse Mastercraft tires, see every Mastercraft Glacier MSR size, explore winter snow tires, or view all tires at ThreePiece.us.