Isuzu i-Series Wheels and Rims

Isuzu i-Series Aftermarket Wheel Fitment

The Isuzu i-Series is a four model pickup truck lineup that ran from 2006 through 2008. Isuzu sold the i280 (4 cylinder, 2006), the i350 (5 cylinder, 2006), the i290 (4 cylinder, 2007-2008), and the i370 (5 cylinder, 2007-2008). The model name suffix changed with the engine displacement updates from 2006 to 2007, but the truck underneath stayed the same. All four are built on the GMT355 mid size truck platform. Element Wheels measures the i-Series at our Chandler, Arizona facility, tracks each of the four model names as its own catalog row, and the wheel interface is consistent across the lineup: 6x139.7 bolt pattern, 100.0mm hub bore, M12x1.5 thread, 6 lug. The fitment specs follow.

Find Your Isuzu i-Series Truck

The i-Series ran four model names across three years. The 2006 lineup was the i280 (4 cylinder) and the i350 (5 cylinder). For 2007 the engines were updated and the model names shifted to the i290 (4 cylinder) and the i370 (5 cylinder), both of which continued through 2008. All four share the 6x139.7 bolt pattern and the 100.0mm hub bore.

The Isuzu i-Series Bolt Pattern Is the Mid Size Truck Pattern

Every i-Series truck (i280, i290, i350, i370) runs 6x139.7 with a 100.0mm factory hub bore, M12x1.5 thread, and 6 lug. 6x139.7 is one of the most widely shared bolt patterns in the mid size truck and SUV world. It also appears as 6x5.5 in imperial callouts because 139.7mm equals 5.5 inches. The same pattern shows up on the Toyota Tacoma of this era, the Toyota 4Runner of this era, the Nissan Frontier of this era, the Chevrolet S-10 pickup, and Isuzu's own Trooper, Rodeo, and Axiom from the years before the i-Series.

6x139.7 is a distinct pattern from 6x135 (the modern Ford F-150 6 lug pattern) and from 6x127 (the GMT360 SUV pattern used on the Trailblazer, Envoy, and Isuzu Ascender). The numerical gaps are small visually but enough to stress the studs and prevent the wheel from hub centering correctly. A wheel listed as 6x135 or 6x127 will not safely bolt onto an Isuzu i-Series. Confirm the listing reads 6x139.7.

Element catalog coverage on the i-Series runs 15 to 22 inch diameter across the lineup with widths from 6.5 inch to 9.5 inch depending on the specific model row. Compare across the rest of the Isuzu lineup at our Isuzu wheels and rims hub.

The Four i-Series Model Names and the GMT355 Platform

The four i-Series model names trace back to engine displacement and model year. For 2006 the lineup was the i280 (the 4 cylinder, 2.8 liter) and the i350 (the 5 cylinder, 3.5 liter). For 2007 the engines were updated, the displacements changed, and the model names tracked along: the i290 replaced the i280 (4 cylinder, 2.9 liter) and the i370 replaced the i350 (5 cylinder, 3.7 liter). All four trucks are the same platform underneath. The 2007 name change reflects what is under the hood, not a redesign of the truck itself. The chassis, the bed, the cab, the suspension, and the wheel interface are consistent across all four model names. The Isuzu i-Series is the Isuzu badged version of the GMT355 mid size truck platform that General Motors built at the Shreveport, Louisiana plant during this era.

Stagger is not on the table for the i-Series. The i-Series was offered as 2WD and 4WD and as Extended Cab and Crew Cab body styles, but the truck use case did not call for a staggered look. A wider rear wheel on a 4WD pickup introduces uneven rolling diameter that strains the drivetrain over time. The aftermarket pattern on the i-Series is square across all four corners regardless of engine, cab, or drive configuration.

Every wheel we recommend is backed by our Fitment Guarantee. If a wheel does not fit, we pick up the wheels and refund 100 percent. No risk to you.

How We Confirm Fitment on Isuzu i-Series Wheels

Element Wheels measures fitment on the platforms we sell wheels for, including the i-Series. For the i-Series that means clearance from the wheel to the fender on the truck body, gap between the back of the wheel and the front suspension components on the GMT355 chassis, brake caliper clearance against the base brake package, hub bore confirmation on the 100.0mm spec, lug stud thread on the M12x1.5 spec, and turning clearance at full lock. At our fitment facility in Chandler, Arizona, the Element Wheels team measures directly on the physical platforms we support. We don't pull specs from manufacturer sheets the way most retailers do.

That measurement work is why our catalog tracks four separate i-Series rows. The chassis and the wheel interface are consistent, but the aftermarket width and diameter windows vary slightly between the 2006 i280 / i350 (widest catalog window, up to 22 inch and 9.5 inch wide) and the 2007-2008 i290 / i370 (narrower window, up to 20 inch and 18 inch respectively, 8.5 inch wide). Confirm your specific i-Series row when filtering wheels.

Isuzu i-Series Wheels and Rims FAQ

Get Isuzu i-Series Wheels Right the First Time

Pick your i-Series truck above to see wheels and rims that fit. We track each of the four i-Series model names as its own catalog row and measure the wheel interface on the GMT355 platform. Find your fit and start enjoying your build sooner.