Max wheel/tire size w/out fender rolling

PWR_SHIFT · 03-27-2005, 02:38 PM

Hey everyone,

What's the largest rim width together with largest tire width that's been tried successfully in the front without having to roll the fenders in 18's? 19's? What was the offset?

Same question for rears.

PWR_SHIFT · 03-29-2005, 12:56 AM

What? No one? Nobody has been able to fit anything over stock size on the Goat without monkeying with the fenders? WOW!!!

I know for sure that the Monaro VXR sports 19in rims (8in width probably though) w/245s (I think with a 35 profile), and I'd be surprized if they booger-up the fenders on those. I just think that putting 245/35s or even 40s on an 8in rim really compromises sidewall support though. May be that's why Pontiac will only offer 235s on the optional 18s . . .

Anyway, come on, someone must've tried something that worked?!

6QTS11OZ · 03-29-2005, 07:40 AM

In a couple of days I will let you know how my upgraded wheels goes. Below are the wheel and tire sizes I ordered.

19 X 8.5 (offset +40mm) fronts with 235/35YR19
19 X 9.5 (offset +45mm) rears with 245/35YR 19

Before I ordered these sizes I test fitted a set of my old 93 Corvette rear wheels to see how the 9.5" would look on the back. And even though the offset was +56mm on the Vette rears, they fit. BARELY, but they fit. With the +56mm offset there was only about a 1/4" gap between the tire and the inner wheel well. But that was only do to the wide section (11.1") with of the MT Drag Radials that I have mounted on the wheels. The 245/35 rear only has a section with of 9.8" so that will free of over a half inch on both sides. But with the +45mm the space between the tire and the wheel well shouldn't be a problem (depending on the backspacing). Anyway, I will let you know how things go.

With the lower profile tires I know I'm gonna have to give up a little of the smooth ride. But personally, I'm okay with that. I guess going form a '98 Vette to the '05 Goat, the suspension of the Goat feels a little mushy to me for a sports car. The firmness of the new tires can only enhance the handling of the car. I HOPE!

AmesGTO · 03-29-2005, 12:32 PM

I have 19" x 8.5 rims with 245/35/19 on all 4 corners. Only the passenger side rear rubbed under hard acceleration. I had to roll it a bit.

PWR_SHIFT · 03-29-2005, 10:03 PM

AmesGTO, what is the offset of your 19x8.5s?

AmesGTO · 03-29-2005, 11:07 PM

Quote:

Originally Posted by PWR_SHIFT

AmesGTO, what is the offset of your 19x8.5s?

No idea. When I ordered I didn't know what I wanted and the company I bought from said they knew what worked well with a GTO. I still don't know? It works.

PWR_SHIFT · 03-29-2005, 11:24 PM

What brand/style of wheels do you have and where did you get them from?

AmesGTO · 03-29-2005, 11:31 PM

Quote:

Originally Posted by PWR_SHIFT

What brand/style of wheels do you have and where did you get them from?

Beyern 5's. Last I heard they are on national backorder for 6 weeks. You can see them on my site here: http://www.redgto.com/Default.aspx?album=GTO/Rims

Here is a pic:

PWR_SHIFT · 03-29-2005, 11:35 PM

Very nice!

Just to confirm, they are chrome (not polished), correct?

AmesGTO · 03-30-2005, 01:06 AM

Quote:

Originally Posted by PWR_SHIFT

Very nice!

Just to confirm, they are chrome (not polished), correct?

Thanks, they are chrome. They do come in a painted silver mag with a chrome lip also.