2008 Cadillac CTS Tire Sizes

Factory original equipment (OE) tire specifications.

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Base

Tire Size
P235/55R17
Load Index
98
Speed Rating
H

w/Performance Pkg.

Tire Size
P235/50R18
Load Index
97
Speed Rating
V

w/Summer Tire Pkg.

Tire Size
235/50ZR18
Load Index
97
Speed Rating
Y