Ironman IRON All Country M/T LT315/75R16/10

Looking for a 315/75R16 mud terrain tire? The Ironman All Country M/T is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.

What 315/75R16 means

In the size 315/75R16, 315 is the section width in millimeters (12.40 in), 75 is the aspect ratio — the sidewall stands 75% as tall as the tire is wide, or 236.2 mm (9.30 in) — R denotes radial construction, and 16 is the wheel diameter in inches. That works out to an overall diameter of about 34.60 inches, turning roughly 583 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 34.8 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 127 — a maximum load of 3,858 lbs per tire, or 124 (3,527 lbs) per tire when mounted as duals. The speed symbol Q corresponds to a maximum sustained speed of 99 mph.

Load Range E corresponds to a 10-ply rating.

Specifications

Frequently asked questions

What kind of tire is the Ironman All Country M/T?

The Ironman All Country M/T in 315/75R16 is a mud terrain tire.

Will 315/75R16 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 315/75R16, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.

What does 127/124Q mean on the Ironman All Country M/T?

127/124Q breaks down as load index 127 — rated for 3,858 lbs per tire (124, or 3,527 lbs, in dual fitment) — with a Q speed rating, good for a maximum sustained 99 mph.

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