Need help with tire size decisions.

SNSD YOONA

Plus 1
The rear tyre would be stretched if he put 285/30/20 on 20X11

kenchan

cooltoy- check out this link. this guy has the 20x9 ET32 front like how you wanted and clearing the infiniti akebono.

Vossen CV2

but the thing is, his rear cv2 is 10.5 ET25 and has almost no concavity or lip.


in comparison, this is my gnosis at 10.5 ET25. this is 19" on my G, but check out how much lip
the wheel has and the curve on the spoke. this day and age, you'll want lip or
concavity or both.

cooltoy

Ya I saw that. Thanks for looking out.

I could get the +15 offset in the rear instead, which is more concave, but I would have to get 275/30 .

That wasn't in your table, will it work?

kenchan

275/30/20 will be 673mm total diameter only 2mm smaller than 275/35/19 (675.1mm)
so yah, it will work.

if that is a 10.5" width wheel, then i recommend you go with 285/30/20 instead.
If that is a 11" width, then it will be a tight fit.

cooltoy

So here is the dilemma (and maybe I just can't visualize it properly).

Let's start with the front.

We have already established that the best offset for CV2's in the front is +32, and the best tire is 245/35.

From my spreadsheet the tire edge will be flush (or 1mm in) to the outside edge of the front fender. Lip of the rim wil be 9 mm inside.

I assume I want the rear to be very similar for an even look.

If I go with +25 (10.5) in the rear and 285/30 tire, the tire edge will be 3 mm inside the edge of the rear fender. Lip of the rim wil be 6 mm inside. So maybe a 3 mm spacer to even it out. But I will loose some of the concavity.

For greater concavity, if I go with +15 (10.5) in the rear and 285/30 tire, the tire edge will be 3mm outside the edge of the rear fender. Lip of the rim wil be 2 mm inside. So that would look uneven compared with the front.

If I go with +15 (10.5) in the rear and 275/30 tire, the tire edge will be 2 mm outside the edge of the rear fender. Would I even notice such a small difference?

Please comment on any of these set ups. I want to pull the trigger on this purchase pretty quick.

Thank you.

axmea?

The impact to the height that you mentioned will be indistinguishable. I'm thinking you will be looking at suspension mods down the road. Based on the options you listed, I'd go for opt 3.

__________________

cooltoy

Option 3 in my fist post, or option 3 in my last post? I think you mean I should go with 275/30 and +15.

Not really concerned about the height difference between the tires, but rather how much the tire will stick out in the back.

And I wil be staying stock. I will not be able to get into the underground parade at work. The initial ramp down is sharp.

kenchan

cooltoy- remember that camber plays a huge roll when the suspension compresses so
even with a ET15 on the rear, it's not going to rub with the 275/30/20.

but the issue is going back to the wheel gap vs sidewall height. running my 19's
the gap and sidewall are about even. running 20s will make the gap a tad more
pronounced.

if you want to take a look at wat ET15 looks like, check out my
WEDS wheel picture in my albums pages. the rear is running ET15 with 285/35/19 tires.

i have no rubbing.

cooltoy

Thank you.

I feel confident that the 285 on +15 will not rub. I am more concerned with how the front will look compared with rear, as the rear tire will be sticking out 7 mm past the fender, where as the front will be flush. That is why I was thinking the 275 in the back with +15 might look more balanced.

Regarding your comment about concavity. Here are pictures kindly provided by NoirG of the +25 rear wheel. Is this not concave enough?

Attached Images

	20140629_225550.jpg (64.4 KB, 31 views)
	20140629_225527.jpg (49.2 KB, 32 views)
	20140629_225516.jpg (48.7 KB, 33 views)

kenchan

^^ yah, that looks pretty good.

the ET15 will not be really 'sticking out' and your front will not be completely flush either at ET32. it's tucked in a bit, the way it should be, but not sunken in.

if you like the ET25 for the rear, go for that for sure. at 10.5" width, the fitment will
look nice. ET15 at stock height is pushing it kinda.

cooltoy

Thanks for helping me out.

Tried to rep, but I already gave you too many apparently. :-)

kenchan

haha, np.

cooltoy

Found this pic for reference. Good comparison of 10.5 ET25 and ET15.

ET25 is in the front. Not a huge difference between the two.

kenchan

yah, the cv2's look good.


but when i see accords like that i lol cause they appear to be RWD/AWD but they are WWD (wrong wheel drive).

cooltoy

I apologize for the Honda, but it was a good visual comparison.