Wheel Bore Size? Options

[GregAmy]

I hate starting topics for simple questions...but the search is defeating me.

What's the hub bore size of stock wheels? I'm looking to spec out some VTO wheels for the street car.

The Fuchs I'm running now (914.361.011.01) appear to have a 78.5mm bore (implying a 78mm hub size). But that's measured with a small scale, I don't have the correct snap gauges for that size.

I've test-fitted 205/50-15 Nitto NT01 on Panasport 15x7s from the race car but the offset is way too small (too far out); those will contact the right rear quarter on the street car, even when rolled. The race car has rolled inner fenders and "massaged" quarters; I think those Panasports are ET20 (hand-measured 122mm backspace).

I'm looking to fit a 205/50 on a 15x7 VTO within the street car's narrow body with only rolled fenders. Probably looking at ET35 if my calcs are right, 40 if I want to be safe (looks like I can move in that far safely).

Kinda just need the bore specs to nail it down...

Thanks!

[GregAmy]

I just did what I should have not been so lazy to do before: I went out there and measured the car.

The OD on the front hub is 3.191" -- so, 78.5mm. No idea how they came up with that number, but whatever.

Tangerine's rear hub centering rings are 3.090", so in that same ballpark.

Remeasuring the bore on the Fuchs with a metal scale I come up with 79mm.

So, 79mm it is, apparently.

Any dissenting opinions?

[JamesM]

I just did what I should have not been so lazy to do before: I went out there and measured the car.

The OD on the front hub is 3.191" -- so, 78.5mm. No idea how they came up with that number, but whatever.

Tangerine's rear hub centering rings are 3.090", so in that same ballpark.

Remeasuring the bore on the Fuchs with a metal scale I come up with 79mm.

So, 79mm it is, apparently.

Any dissenting opinions?

If you call the guys at VTO and tell them what its going on they will get you squared away with proper bolt pattern, lug seat shape, bore center, offset, ect. At least that is what i did and had no issues.

ET35+ should be your best bet on a narrow body car though. Depending on your chassis, tire choice, ride height, and alignment setup you might wind up with a little rub, but this should only be an issue with wider tires. Not all 205s are the same... See Hoosiers

You will love the 7" width, with an aggressive tire they add a lot of stability over stock wheels.