Originally Posted by MicVelo

You wanna put those short tires on and adjust out the wheel gap and speed differences, just do it. I'm done.

Originally Posted by MicVelo

Feel like I just answered a similar questiion earlier...

​​​​​​​Stock 18s
225/45-18 F 25.97"
245/45-18 R 26.68"

Your tires

F: 225/30-19 F 24.31"
R: 245/35-19 R 25.75"

So yeah, sorry, but lame sizing. I already gave you optimal sizing for narrow wheels.

People, please pay attention to overall rolling diameters.

1. Section width/25.4 (converting to inches or if you're in the metric world, skip this.)

2. (Section width x aspect ratio in percentages, e.g. ".35", ".40") x 2 (two side wall​​​​​​​s)

3. + wheel diameter

4. = overall diameter

Not rocket science.