GarageCalc Where 8x170 is used
8x170 appears on 4 vehicles from 1 makes in this list: Ford accounts for 4. The earliest fitment here is the Ford F-250 Super Duty from 1999, and 2 of the 4 are still built with this pattern today.
What else has to match
A matching bolt pattern is the first of four checks, not the last. The wheel's center bore has to match the hub, or be bridged with a hub-centric ring, so the hub carries the wheel instead of the studs. The offset decides whether the tire clears the suspension and stays inside the fender; run the numbers in the wheel offset calculator before buying. And the lug seats must match the wheel: conical, ball or flat seats are not interchangeable even when the thread is. None of those values are fixed by 8x170 itself, so check them per vehicle.
Frequently asked questions
What is 8x170 in inches?
8x170 is 8x6.69 in inches: 8 lugs on a 6.69 inch circle (170 mm divided by 25.4). It is the same pattern in different units, but this one is almost always written in millimeters; the inch figure only shows up in conversion charts.
What cars have an 8x170 bolt pattern?
Ford F-250 Super Duty (1999+), Ford F-350 Super Duty (1999+), Ford Excursion (2000-2005), Ford F-350 Super Duty (1999-2004). Always confirm on your own vehicle: the pattern can change between generations, trims and markets.
Is 8x170 the same as 8x165.1?
No. 8x165.1 is 4.9 mm smaller in diameter. That is enough to seat every lug off-center, so the wheel is held by the lug hardware rather than by matching geometry and can work loose. Fit only wheels that are exactly 8x170, or hub-centric wheels with wobble bolts made for that specific mismatch.