I would like to get a little debate going on here about tire size for a 17" chrome rim for the G6. Stock when I purchased the car had Hankook optima's that were 225 50 R17. I heard a lot of people going to the 215 50 R17, but no one going to the 235 50 R17. Also I got 46k out of my first set of tires
I always believe the wider tire is better for ride and comfort and handling, just not good for gas mpg's. So, I went ahead and got Yokohama Avid ENVigors at 235 50 R17. I also did a suspension/brake upgrade as well, but that's another topic. I have had them on for about 700miles so far, and the mpg avg is down from 24.9 to 23.4. BUT, the ride is phenomenal with the wider tires! You hear less, have more grip, and its actually a little faster, taking up more space on the ground, and better in snow.
The myth that different size tires will ruin your tranny are false, unless you have 1-2 different siezed tires on there from the others. If you have uniformly the same size, you are fine. Auto Dealers are THIEVES.
But I would like some feedback to see what other G6 owners purchased.
My car is an 08 GT 3.5L