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2004 C4S 18" to 19" Wheels

Wheels and Tires

Vehicle Information: Model: C4S 996; Year: 2004; Body Type: Coupe; Total Mileage: 18000;

Joel, thanks for your previous help in this area.I found some 8.5 x 19" (front) and 11 x 19" wheels to replace my 18" rims. The new wheels have 42MM (front) and 40MM (rear) offsets. 1) Will these wheels fit properly?2) What size tires should I use to ensure that the relative front to rear tire/wheel sizing dimensions remain per stock and does not adversely affect the ABS, PSM, speedometer accuracy, etc.? My current tires are 225/40/18 and 295/30/18. I was thinking 235/35/19 and 295/30/19. However, I believe that the 997 C4S, which is stocked with the 19" wheels, have 235/35/19 and 305/30/19 tires, which may be instructive, but the wheels may be wider than 11. Thanks again for your insights. Jim

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