Blem Ironman 245/70R17.5/18 143/141J - BLM.96917

The Blem Ironman in 245/70R17.5 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 245/70R17.5 means

In the size 245/70R17.5, 245 is the section width in millimeters (9.65 in), 70 is the aspect ratio — the sidewall stands 70% as tall as the tire is wide, or 171.5 mm (6.75 in) — R denotes radial construction, and 17.5 is the wheel diameter in inches. That works out to an overall diameter of about 31.00 inches, turning roughly 651 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 143 — a maximum load of 6,008 lbs per tire, or 141 (5,677 lbs) per tire when mounted as duals. The speed symbol J corresponds to a maximum sustained speed of 62 mph.

Specifications

Frequently asked questions

What does 143/141J mean on the Blem Ironman?

143/141J breaks down as load index 143 — rated for 6,008 lbs per tire (141, or 5,677 lbs, in dual fitment) — with a J speed rating, good for a maximum sustained 62 mph.

Will 245/70R17.5 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 245/70R17.5, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.

How fast does this tire ship?

Every order at ThreePiece.us ships free, with fast delivery from a nationwide warehouse network. Affirm financing is available at checkout.

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