04 coupe and wanted to do a 10.5 in the rear, how wide can i go with the tire size? will it rub? lowered on eibach sportlines, 1.5 inch drop

 

For 18s - 285/35/18
For 19s - 275/30/19
For 20s - 255/30/20 or 275/30...offset dependent

Need more info on the wheel specs to be exact.

 

i'm looking at 20x9 or 9.5 for front and 20x10 or 10.5 for rear. Also i'm driving a 03 g35 coupe

 

Then ya 255/30 or 275/30 depending the rear offset

 

275/30-20 on a 10" and the car would work well.

 

Wheel offset will make a huge difference, so please check out the wheel questions thread for offset advice.

I have 20x9 +17 Front and 20x10.5 +22 Rear and run 245/35/20 Front and 285/30/20 Rear tire sizes. Rear fenders are rolled, only have a .75" drop and had slight rubbing on hard corners.

Tirerack recommendations tend to be really conservative since they only consider stock, unmodified cars and they don't want to deal with returns when someone doesn't do proper research and realize they need to roll their fenders.