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Curious... is this something that goes on top of the original fender or is the fender cut up to fit? I just ordered some 18x9 and 18x12 and was going to run a 245/40 in the front. 265/35 sounds interesting on my C4S?
You should be running much wider tires on that rim width. They’re going to be stretched.
Below is the fitment guide per the wheel manufacturer. Same was said when i spoke with them over the phone. The 996 Turbo Forum guys run the same setup with satisfactory results.
Performance Street/Track or Race Fitment
Front: 18x9” ET46 with 245/40-18 tires Rear: 18x12” ET45 with 315/30-18 tires
Requires at least 2 degrees of front negative camber.
255/35-18 front tires may also be used but will require at least 2.5 degrees of front negative camber.
265/35-18 front tires may also be used but will require at least 3.0 degrees of front negative camber.
335/30-18 rear tires may also be used but will require negative camber pending ride height.
These fitments are effective for both weekend and dedicated track warriors. This no-compromise fitment is ideal for track use where enthusiasts want to maximize front and rear end grip, providing for an incredibly neutral and aggressive setup. The 9” front and 12” rear wheel will provide superior sidewall support for wider tires, and it relies on aggressive negative camber specifications for proper fender clearance. Since you'll be using all available real estate under the fender arches to accommodate this wider configuration, mild modifications are likely necessary. A mixture of negative camber and rolled rear fenders are typically advised to ensure proper utilization of these extreme setups. Maximizes both front and rear tire width.
10-27-2019 | 09:52 PM
