Bore of FR-S rims versus TC1?
 

Putting FR-S stock rims on TC1 (trying to save money).

Are these the correct bore?
tC1 Wheel
17x7 +45mm Bore 54.1
Source ebay

FR-S Wheel
17x7 +48mm Bore 56.1

Do they even make hubcentric rings for 56.1 to 54.1 other than http://www.hubcentric-rings.com?

Frs wheels are 5x100. Tc bolt pattern is 5x114. You will need an adapter if you want to fit these.

Actually i think the 1st generation TC is the same as the FR-s but the 2nd generation TC is not 5x100?

i unno about the 2nd gen, but the first gen is 5x100. do you really need hubcentric rings though? people run random aftermarket wheels all the time without em.

Just make sure you have proper nuts for the fr-s wheels if you put them on the tc.

Arent the bolts not supposed to carry the entire weight of the vehicle and you need hubcentric rings to help prevent that?

You would have to bore the wheel bigger?

I suppose that's true since they do make hubcentric rings for a reason, but when you consider how often some people are running gigantic, heavy, low offset wheels with significantly larger hub bores on a daily basis without frequent wheel hub bearing failures or lug bolts sheering off I wouldn't sweat it too much.

Though, I guess my advice is mostly speculative, so I don't want to put you in a position where something could break on your car.

http://www.motorsport-tech.com/hub_rings.html

they can make specific sized hubcentric rings (and spacers/adapters) to order. Knew a guy who made hubcentric spacers that were 50mm thick lol

The hub rings won't carry any of the car weight. Seems they are mostly used when mounting the wheels to ensure they are centered while tightening the nuts...which is why they can get away with making them in plastic.

there we go, good to know :)

http://www.motorsport-tech.com/hub_rings.html

Only custom made for $100 for 4 rings.

Do you think it wont matter much because the ring will be so small? 56.1 to 54.1 Hubcentric Rings?

Ouch 25 bucks a pop? Most wheel places through hub rings in for free. Unless you have a really oddball fitment, that's highway robbery...

Do you guys think I need rings? Dont want my wheels falling off.

Anyone think I need rings for 56.1 to 54.1 difference? thank you

It won't fit. No rings will change that.

Don't you understand that the FRS has a center bore of 56.1 and the tC is 54.1. Do you not understand the 2mm overlap? The tC wheels won't fit the center bore.