Originally Posted by caneboy
I was thinking 275 or 285 all the way around on 19s. I have 285s on my 06 Roush with no problem so i was hoping the 2014 would be ok with that too.
With the correct rim, you'll have no problem fitting a 285 tire on these cars. I've seen this done plenty of times, especially 11+ GT with Forgestars. Just make sure the wheel have the correct offset and back spacing. You should be good to go with a square setup!
Originally Posted by bryan67
285 number of a tire isnt the width. it's the height of the tire. the 2nd number 40, 50, 60 etc. is how wide your tire is going to be.
285 is the width of the tire in mm (millimeters), the second number is a percentage of the width that equals height of the sidewall. The last number is the size rim the tire is fitted for.
^^^ This tire is 285mm wide. The side wall height is 35% of 285mm = 99.75mm. 99.75mm = 3.927inches. 3.927" x 2 = 7.854" overall combined sidewall. 7.854" + 19"rim = 26.854" tall tire height
Since all tire manufacturers found these numbers to the nearest 5, the end measurement can always vary slightly. It's best to check with the tire manufacturer directly for exact measurements for particular tire models.
Hope this helps clarify things for you!