For wheel experts out there, I need some help.

I have a spare set of WRX 16x6.5 wheels with 55mm offset. I just bought a Scion tC and want to use the WRX 16" rims to mount for snow tires. They both are 5x100, so the WRX wheels will actually fit. The only thing I worry about is the offset. The factory rim come with tC is 17x7 wheels with 45mm offset, so the offset is a little different, 45mm vs. 55mm. Will the WRX wheel cause any problems?

Here is some result from some wheel offset calculation website

The clearance from stut housing to the inside of the wheel will be 4mm LESS
The outside edge of the wheel will RETRACT in towards the body by 16mm

 

I would think that your tire size/height could be adjusted to fit in the wheel well. The only thing I think you will see happening is your turning will feel a bit weird and your tire wear will be dramatic. Other than that I wouldn't worry about any mechanical parts messing up.

 

The 205/55-16 WRX tire dimension will actually fit the tC, I calculated the diameter, they are only 0.2 diff, plus it is the same tire size tirerack has for the 16" winter tire package for the tC, I won't worry about that. Thx for your info.