chevyhotrod

Hello all, I have a 92 Z28 with the stock 16x8 wheels. I am lowering the car 1.25” with springs and am thinking of purchasing wheels that are 18x8.5 with 50mm offset. What size spacer would put the tire as far out as possible but still inside the wheel well.
thanks

Abubaca

iTrader: (3)

50mm is 1.96 inches. Call it two inches. With a 2 inch adapter, the wheel will fit like a stock 0mm offset wheel. ...since your wheel will be .5" wider than a stock 8" wheel, it'll sit .25" farther out, and .25" farther in, both will cause no fitment issues.

chevyhotrod

Okay that makes sense.
Thank you!

Abubaca

iTrader: (3)

yessir!

Eroc85

Kind of a general question here, but with about 450whp are spacers that big of a deal? I know a lot of guys run them but have heard recently they can damage bearings and such.

Abubaca

iTrader: (3)

In this case, we're talking adapters, not spacers. The adapter bolts to the hub, and then the wheel bolts to the adapter. A spacer is typically thin, isn't mechanical mounted to anything, and is just for fine adjustment of the wheel. Hawk's Motorsports for example, will ship their 17x9.5 - 0mm offset wheels with .25" spacers to fine tune fitment if there's minor rubbing.

...if you're using the adapter to fit a wheel with too much positive offset and make it fit like a factory wheel with a much lower offset, and fit is the same, then there's no issues. That's the case here. -Assuming they're quality adapters with quality hardware, installed properly, etc. etc. ...it's when you already have proper fit, and use an adapter to push the wheels out farther than intended that problems arise. Very common with truck guys.