Wheels / Offsets Question

[G-311556]

I drive a 2023 2.5 Stinger, and I’m looking to get a whole new set of wheels tires and everything . I have found ones that I like but I don’t understand the offset part of the wheel can somebody help me understand ? I don’t even know the stock wheel offset of my stinger haha I understand the wheel sizing and stuff though

 

[SRV]

There are LOTS of threads on the topic, go thru them and see what sizes people are running - that is a good starting point.

 

[Volfy]

Is it really that hard?!

Kia Stinger wheel offset - Google Search

 

[Thomby]

Offset is where the wheel mounts relative to its centerline, with a positive offset putting the wheel hub closer to the outside of the wheel, ie tucking the wheel further inside. An inch is 25.4mm (and a cm is ~0.4 inches).

So, if the fronts are 19x8" with a +34mm offset, it means that the wheel mounts ~1.33" outside the wheel centerline. Instead of 4" of wheel inside and outside the hub surface, it's more like 5.33" inside and 2.67" outside.

The rears are 19x8.5 with a +46.5 offset, or the wheel tucked in ~1.83". Instead of 4.25" of wheel inside and outside the hub surface, it should be 6.08" inside and 2.42" outside.

In other words, going from front to rear you add a half inch of wheel width, which at the same +34 offset would mean a quarter inch inside and out, but your offset is 12.5mm higher, shifting the wheel inward 1/2". So the inside edge of your front wheel is about 3/4" further inward, and the outside edge is about 1/4" further inward.

(This is relative to each wheel hub, so if the fronts and rears were in the same plane you'd have the rear wheels 1/4" inboard of the fronts, but the rear hubs are almost certainly set wider than the fronts.)

 

[D.J.]

Offset is where the wheel mounts relative to its centerline, with a positive offset putting the wheel hub closer to the outside of the wheel, ie tucking the wheel further inside. An inch is 25.4mm (and a cm is ~0.4 inches).

So, if the fronts are 19x8" with a +34mm offset, it means that the wheel mounts ~1.33" outside the wheel centerline. Instead of 4" of wheel inside and outside the hub surface, it's more like 5.33" inside and 2.67" outside.

The rears are 19x8.5 with a +46.5 offset, or the wheel tucked in ~1.83". Instead of 4.25" of wheel inside and outside the hub surface, it should be 6.08" inside and 2.42" outside.

In other words, going from front to rear you add a half inch of wheel width, which at the same +34 offset would mean a quarter inch inside and out, but your offset is 12.5mm higher, shifting the wheel inward 1/2". So the inside edge of your front wheel is about 3/4" further inward, and the outside edge is about 1/4" further inward.

(This is relative to each wheel hub, so if the fronts and rears were in the same plane you'd have the rear wheels 1/4" inboard of the fronts, but the rear hubs are almost certainly set wider than the fronts.)

This entire industry (automotive wheels), is very odd in the sense that tire widths and rim offsets are exclusively spoken about in metric (millimeters)... whereas tire diameters and rim widths & diameters are exclusively discusses in imperial (inches)

What a world we live in.

 

[Thomby]

This entire industry (automotive wheels), is very odd in the sense that tire widths and rim offsets are exclusively spoken about in metric (millimeters)... whereas tire diameters and rim widths & diameters are exclusively discusses in imperial (inches)

What a world we live in.

I think the Brits have a lot of cases where they mix and match. It can seem inconsistent, but it also gives you context -- talking about a 9" tire on an 8" wheel (or a 235 tire on a 205mm wheel) could get confusing, but when you see 235 and 8 you know which one is the metal and which one is the rubber.

And of course the aspect ratio (/35) being a percentage rather than an absolute measure just adds a third unit to the mix.