yep, in victoria it needs to be enclosed. noise is 90DB at 2/3 of redline from like a meter away (never been epa'd don't know the specifics). agreed, i believe the white coloured bulbs from autobarn are legal, i have used HIDs but no longer do, just stating that it's something people do regardless of the law and cops tend not to pay too much attention to it. was trying to point out that if the wheels did not stick out of the arch having a bigger width is technically safer for a car :) unfortunately a few ruin it for us, i wish they understood we modify cars for a hobby, keep our cars in top condition and actually abide by road rules more often than other drivers as we care alot for our vehicles. most people with highly modified vehicles granny around the roads and save their real potential for the track. with that argument, a situation like that could occur with any part? the amount of times i've seen hubcaps lying around on the road and swerving to avoid them. the friction of the wheel being secured onto spacer and hub is what takes the brunt of the load (yes studs carry some of the load too)I also use hub rings to ensure snug fit of the wheels, the amount of cars that i see driving around with a gap between the hub and the wheels is alarming, the studs are doing as much work as it being on the spacer! It is also important how you tighten the nuts and ensure it's not biased in any direction, overtightened/undertightened nuts are just as dangerous, also with aftermarket rims you require conical wheel nuts, there are countless amounts of people driving around with the wrong wheel nuts on their wheels also incredibly dangerous. depending on the state you are you would have different roadworthy rules, in victoria we don't have to do yearly checks such as NSW, we are only required to provide a roadworthy certificate when purchasing a car or if you get defected. There are a large amount of cars with bald tyres, broken break lights, broken headlights, collapsed suspension driving around... are they any more safe than using spacers on a car which you've researched and ensured that it placed on properly. I'm not promoting illegal modifications, i'm only stating that if a modification has been researched and done properly, it would be safe, i wouldn't put my life or others lives at risk with the modifications on my car. In your scenario i do not believe my wheel would fall off, it is correctly tightened with the right wheel nuts, fitted on hubrings, has the correct alignment and i consistently do checks on my car to ensure it is in optimal condition.