There's going to be a stamp in the casting of the hub on the inside of the rim. Or, you will see the stamp's on the spokes.

That will verify your size.

What's the stock size of a 1g awd dsm rim and tire?

My guess, 16x7 5x114 +38 205/50/16 ??? Do I win a cookie? tongue

'99 GSX GT35R
'03 CBR 600RR