GT Radial Adventuro RT LT315/70R17/10 126/123S - 100UA3838

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What 315/70R17 means

In the size 315/70R17, 315 is the section width in millimeters (12.40 in), 70 is the aspect ratio — the sidewall stands 70% as tall as the tire is wide, or 220.5 mm (8.68 in) — R denotes radial construction, and 17 is the wheel diameter in inches. That works out to an overall diameter of about 34.36 inches, turning roughly 587 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 34.7 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 126 — a maximum load of 3,748 lbs per tire, or 123 (3,417 lbs) per tire when mounted as duals. The speed symbol S corresponds to a maximum sustained speed of 112 mph.

Load Range E corresponds to a 10-ply rating.

Specifications

Frequently asked questions

What warranty does the GT Radial Adventuro RT carry?

The manufacturer's warranty on this tire is 45K.

What does 126/123S mean on the GT Radial Adventuro RT?

126/123S breaks down as load index 126 — rated for 3,748 lbs per tire (123, or 3,417 lbs, in dual fitment) — with an S speed rating, good for a maximum sustained 112 mph.

What kind of tire is the GT Radial Adventuro RT?

The GT Radial Adventuro RT in 315/70R17 is a all season tire.

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