After extensive searching regarding 20" coupe tire sizes, I have come to the following conclusions:

1) Most people run the 245/30(35)/20 & 275/30/20 combo.

2) 255/30/20 & 285/30/20 is considered an "acceptable" slightly wider alternative, but it is much less popular.

My question is, why is option 2 not nearly as popular? According to my calculations it seems to be closer all-around to the stock diameters. Is there some downside with running this setup that I have missed?

I'm looking at getting some 9"F/10"R wheels with +25 offsets and lowering with 350z H-Techs.

Option 2 seems to make the most sense to me, but I wanted to get some input from you guys since the minority of 20" wheel owners seem to not be using it.

Thanks!

 

I would like to know this as well. I just purchased the following set up and I am trying to decide on which tires to purchase.

Size 20x8.5 Front, 20x9.5 Rear
Offset 20mm Front , 25mm Rear
Lip Size 2.5" Front, 3" Rear
Finish Hyper Silver W/ Polished Lip
Hub bore size 73.1 mm

 

Those are the same wheel specs i have (axis pentas) and I am running the tire sizes u mentioned up top with 245/35/20 in the front. I now wish that I had gone with a smaller tire for more stretch so that I could fit bigger spacers. even with 15mm spacers (making the front 20x9 +10 offset) I rubbed and im only lowered on 350z H-techs. If I had stretched my tires i could of pulled off a 20mm spacer for that extreme flushness but now im going to have to get 10mms.

it comes down to the end result your looking for I suppose