I have G35 seden 03 with sport package and It's time for new tires. If I want to use the original wheels, can I install 1 inches wider and lower tires ? what brand should I buy ?

Thanks
Frank

 

You can go 235/50R17 without even affecting the speedometer accuracy.

225/55R17 and 225/50R17 will also fit fine, but you'll be plus or minus (depending on which way you go) about 1mph at 60.

Which tire you should buy depends on what you want out of your tires. Tread life? Comfort? Able to handle a light snow? Handling performance?