Shop 305/70R17 Tires

On a half-ton truck with stock suspension, yes - plan for at least a 3-inch lift, preferably 4 inches. The combined 33.8-inch height and 12-inch width exceed the factory clearance on most half-ton wheel wells. Front turn lock and bump-travel clearance are the critical areas.

HD trucks (F-250, Ram 2500, Silverado HD) may fit this size on stock suspension if they came with appropriately sized wheel wells - but confirm the specific year and configuration. Always test-fit at full steering lock and full jounce before mounting a full set.

A 305/70R17 stands 33.8 inches tall, with a 12.0-inch section width and an 8.4-inch sidewall. Circumference is approximately 106.2 inches - about 597 revolutions per mile. This is a wide, tall truck tire in the 33-inch-plus range, combining significant width and height for maximum truck presence and off-road capability.

At 33.8 inches, it's in the 34-inch neighborhood by some measurements, but typically marketed as a 33-inch class tire. Depending on specific manufacturer and tread depth, some variants measure close to 34.1 inches inflated. This overlaps with the 285/75R17 at the same nominal height.

For lift kit and clearance planning, treating 305/70R17 as a 34-inch tire is conservative - it's better to have more clearance than expected than less.

The approved rim range is 8.0 to 10.0 inches, with 8.5–9.5 inches as the optimal range. HD truck applications typically use 8.5-inch wheels. For high-load applications with maximum towing or payload, an 8.5-inch rim provides the best combination of tread contact and sidewall angle for load distribution.

This size is commonly selected for Ford F-150 and Super Duty (modified setups), Chevrolet Silverado/GMC Sierra, Ram 2500/3500, Toyota Tundra, Tacoma, and 4Runner builds (often for overlanding/oversize use), and Jeep Wrangler and Gladiator (lifted configurations).

With a diameter approaching 34 inches and a section width of 12 inches, the 305/70R17 size requires careful verification of inner clearance, outer fender space, steering articulation, and suspension compression - especially under load.