Can someone confirm this...

[Gloves88]

I've been looking into putting on some spacers and just wanted to make sure i've understood this correctly....

I've got BMW E30 BBS wheels - 15" 7J with 195/50 tyres...i think they have an et of 24, anyone confirm this?

If i fit spacers of 5mm, it'll change my et to 19 - have i understood this correctly?

Search told me anything up to an et of 18 on the rear is fine, but what about the front? Car is lowered by around 35mm.

Wheels fill the arches quite well but would be perfect 5 or 10mm further out 

Cheers

[Ben Lessani]

http://www.clubgti.co.uk/forum/archive/index.php?t-44356.html

The offset, measured in millimeters, can be negative or positive, and is the distance from the hub-mounting surface to the rim's true centerline. A positive offset means the hub-mounting surface is closer to the outside edge of the wheel, i.e. the wheel wraps around the hub and brake hardware more deeply; a negative offset means the hub-mounting surface is closer to the inside edge of the wheel and wheel sticks outwards more than inwards. When selecting aftermarket wheels, a wheel with too little positive offset will be closer to the fender, and one with too much positive offset will be closer to the suspension components. Wheel width, offset and tire size all determine the way a particular wheel/tire combination will work on a given car. Offset also affects the scrub radius of the steering and it is advisable to stay within the limits allowed by the vehicle manufacturer. Because wheel offset changes the lever-arm length between the center of the tire and the centerline of the steering knuckle, the way bumps, road imperfections and acceleration and braking forces are translated to steering torques (bump-steer, torque-steer, etc) will change depending on wheel offset. Likewise, the wheel bearings will see increased thrust loads if the wheel centerline is moved away from the bearing centerline.

[Gloves88]

Cheers for the blurb....very helpful....kinda leads me to my next question, is it safe to run spacers?

Have seen the wheels size list before, doesnt actually have my wheels on it as they were off a BMW

[Ben Lessani]

Spacers are fine, basically, as long as there is still a lip from the hub for the wheel to sit on - your fine with a universal type affair.

Over that thickness, 15mm IIRC, you need hubcentric spacers for safety.

[rubjonny]

dont forget you need bmw wheel bolts as the bolt seating is different, they're also a bit longer than vag bolts so perfect for the extra 5mm of thickness you want.

[Gloves88]

dont forget you need bmw wheel bolts as the bolt seating is different, they're also a bit longer than vag bolts so perfect for the extra 5mm of thickness you want.

Did i see a while back that you had the E30 bbs wheels with spacers on as well? I could be totally wrong lol

If so did you have any issues?

[rubjonny]

I didnt have spacers on my e30 wheels, but I did on my TSW omegas, 16mm and 10mm. 16mm ones were too big and caused rubbing, so I went to 10mm.  The 16mm ones I needed longer bolts, the 10mm ones were fine with my standard BMW wheel bolts