Will 285 30 18 Hankook Ventus Sport 104 Fit On 18" C6 Replica Wheels. The Wheels Are 9.5. I Want To Put Them In The Front And Back. I Think They Will Work Ok In The Back But Im A Little Concerned About The Front With Out Doing Anything.

 

A 285/30-18 is 1" smaller than the stock diameter. That drops your car 1/2" closer to the road, and increases the gap between the tire and the fender by 1/2" . Causes your speedo to read 4% higher than actual speed unless you reprogram. The ride will be extremely harsh with the thin sidewall, and will expose the rims to damage from potholes.

You would be better off with a 285/35-18

 

that sizes will be ok because i´ve 19x9.5 i my 94z28 and it work perfectly, so if you want to be sure, put one 285 30 18 tire on the wheel and put at the front first and don´t worry for the rear because i put 285 35 19´

 

Let's try this one more time....

You can't compare a 285/35-19 (26.9" diameter) to a 285/30-18 (24.7" diameter). Some manufacturers recommend at least a 10" wide wheel for the 285/30-18. Some will accept a 9.5" wide wheel, so the answer depends, in part, on whether Hankook recommends that tire on a 9.5" wide wheel. The 285/35-19 tire actually has a taller sidewall than the 285/30-18, so it can fit on a wider range of wheel widths - its a lot more flexible. Again, you can not compare those two tires with regard to what width wheel they need.

After you are past the point of whether its a good idea to put that wide a tire on a 9.5" wide wheel, you are still stuck with the issues created by the smaller diameter (24.7" diameter vs. 25.7" stock). Again, you can not compare a 285/35-19, which is really way oversized for a 4th Gen F-Body. A 285/30-19 would have been a much better choice.

 

i have 275/40/18 on a 18x9.5 all the way around on my car and thay fit good