How to find wheel offset

[LilJen]

Hi.

I'm having issues with my new suspension (its sits too close to the wheels to be able to lower it)
To be able to try and resolve it, I need to find out the offset of my wheels. I've looked up on the internet but cant seem to find anything. On the wheel I can see the width etc, but don't seem to be able to find the offset. Is it stamped on them, or is there a standard size for them?
I have 16" Genuine Alpinas.

The tyres are 205/50 which seems to be the size others have used, so I didn't think they would cause a problem.

Thanks

[randomspeedfreak]

Hi.

I'm having issues with my new suspension (its sits too close to the wheels to be able to lower it)
To be able to try and resolve it, I need to find out the offset of my wheels. I've looked up on the internet but cant seem to find anything. On the wheel I can see the width etc, but don't seem to be able to find the offset. Is it stamped on them, or is there a standard size for them?
I have 16" Genuine Alpinas.

The tyres are 205/50 which seems to be the size others have used, so I didn't think they would cause a problem.

Thanks

the et is the offset of the hub mounting face relative to the centerline of the wheel. so for example if you have an 8J wheel, you would measure 4 inches towards the mounting face from the back of the rim, the distance from this point to the mounting face is the offset (in mm)

[Rav335uk]

What suspension have you had fitted???
Alpina 7j wheels are ET 28 iirc.
These should fit with no issues at all on E30's.

[LilJen]

Ive had a Gaz GHA coilover kit fitted. Its all on ok, and rear is set up nicely, but if I drop the front anymore it will rub the tyre.

[Rav335uk]

On the Gaz coilovers you need to run a shorter spring, and not the ones supplied with them.
There has been a few issues on here already with their coilovers and this seems to be the main issue with the longer springs supplied.

[LilJen]

I've gone through a very reputable company to get them, but they never mentioned anything about springs, unless the wires have crossed somewhere, and manufacturers sent out the wrong ones.

[Jhonno]

With coilovers you tend to need to run a spacer or lower offset wheels. End of. A shorter spring is a bit of a bodge and will reduce bump travel available.

It's due to the spring seat position being changed.

[Rav335uk]

That's what the problem is Dan, the seat for the spring being low and catching..

As Dan said, it's either spacers or as I said, a shorter spring.

[LilJen]

What sort of size spacers can you get away with before it starts causing any issues? I will try them 1st and then if that doesn't work, I will have to get shorter springs

[Rav335uk]

I think the majority who run them are between 5-10mm. I think you should be fine with 5mm