Help with tire sizes
Also to consider, just as an example, tirerack has 7 results for 285/40/17 tires. 36 for 275/40/17 tires. You will have a much wider selection of the later sized tires, just my opinion.
-J
285/40-17 is as big as I would go on stock tires. They won't add much and you don't have a great selection, but they would help a little by providing more contact path all around the car.
275/40/17- Section Width 10.83"\ Not much wider; .39"
285/40/17- Section Width 11.22"/
275/40/17- OD 25.66"\ Not much taller; .32"
285/40/17- OD 25.98"/
275/40/17- Sidewall 4.33"\ Sidewall is almost the same; .13"
285/40/17- Sidewall 4.49"/
I could understand doing a staggered set up with 17x9.5/17x11s and running a 315/35/17 out back which is considerably wider.
275/40/17- Section Width 10.83"
315/35/17- Section Width 12.40"
275/40/17- OD 25.66"
315/35/17- OD 25.68"
275/40/17- Sidewall 4.33"
315/40/17- Sidewall 4.34"
If you really wanted to stand out with your car you can fit 335/35/17 on a 17x11 with some modification to the fenders, spacers, longer wheel studs.
335/35/17- Section Width 13.19"
335/35/17- OD 26.23"
335/35/17- Sidewall 4.62"
I DO NOT RECOMMEND 315/35/17 ON A 9.5" WIDE WHEEL





