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For 2003 G35 Sedan with Sports Sepspension it is 215/55/R17.
its written on the inside of your driver door
The 2003 Infiniti G35 is a fully-loaded 5-speed shiftable automatic with a V6 engine that gets up to 24 mpg. This sedan can comfortably seat up to five passengers.
The Infiniti G-series is a line of compact executive or entry level luxury car produced by Nissan's luxury brand Infiniti. The G35 which is based on the Nissan FM platform shared with the Nissan 350Z, was produced in 2003.
Use a hammer!!
The factory 2003 Infiniti M45 shocks are monotube. It is evident by the huge piston size. For a premium luxury sports sedan as heavy as the M45, monotube shocks makes sense as they provide stable control on longer drives on different road conditions.
Infiniti FX was created in 2003.
Infiniti G was created in 2003.
Infiniti M was created in 2003.
45 mm front and rear for the 17" wheels that came on the G35 Sedan 2003 - 2004 45 mm front and rear for the 17" wheels that came on the G35 Sedan 2003 - 2004
The 3.5 litre V6 engine in a 2003 Infiniti G35 has a timing CHAIN
The Infiniti G35 was produced from the years 1990 to 1996 and 1998 to 2013. As of July 2013, the amount of 2003 Infiniti G35s that were sold in the United States is not stated online.