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· Administrator
'05 CTS-V
9,370 Posts
As far as I can see, the CT5's Brembo option is basically the same setup that was used on other Cadillac models - 345mm rotors with 4-piston Brembos - like the '14-19 CTS VSport or the CT6 (non V). Those models come from the factory with 18" wheels, so I don't see any reason to think that an appropriate 18" wheel (with proper spoke design to clear the Brembo calipers) won't fit on a CT5. Hell, I run 18" wheels on my CTS-V with 370mm rotors (a full inch larger) and 6-piston Brembos!

Seems silly to buy 19" wheels that you're not even sure will fit if 18"s is what you want.
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