gto spares for c5
Race Director
Joined: Mar 2007
Posts: 18,308
Likes: 21
From: Marlton. Increasing performance one speeding ticket at a time! NJ
While popular, especially for running them upfront as skinnies in drag applications, I'll have to throw my $.02 in and say I think it's incredibly dumb.
GTO wheels are not on 5x4.75 centers. They are on 5x120mm centers. This makes the lugnuts not properly seat in the cup. Do you want to drive when your lugnuts aren't seated properly.
GTO wheels are not on 5x4.75 centers. They are on 5x120mm centers. This makes the lugnuts not properly seat in the cup. Do you want to drive when your lugnuts aren't seated properly.
Melting Slicks
Joined: Oct 2007
Posts: 2,464
Likes: 2
From: Cedarburg, WI
While popular, especially for running them upfront as skinnies in drag applications, I'll have to throw my $.02 in and say I think it's incredibly dumb.
GTO wheels are not on 5x4.75 centers. They are on 5x120mm centers. This makes the lugnuts not properly seat in the cup. Do you want to drive when your lugnuts aren't seated properly.
GTO wheels are not on 5x4.75 centers. They are on 5x120mm centers. This makes the lugnuts not properly seat in the cup. Do you want to drive when your lugnuts aren't seated properly.
Le Mans Master
Joined: Sep 2003
Posts: 8,812
Likes: 2,029
From: eastern NC
You're right, that's not nearly close enough....
GUSTO
Race Director
Joined: Mar 2007
Posts: 18,308
Likes: 21
From: Marlton. Increasing performance one speeding ticket at a time! NJ
I expressed facts that it's not a good idea. You do what you want.
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Drifting
Joined: Jul 2006
Posts: 1,375
Likes: 33
From: Shelby Township MI
I had to grind mine done to get it to fit. The way I see it if it get so me out of a jam so be it. I never put it in the car yet though... Maybe if I decide to go on an interstate trip some day.
Racer
Joined: Nov 2003
Posts: 283
Likes: 2
From: Orlando Fl
They are dead on 26" (M&H 26 X 4.5 X 17) NOT THE ORIGINAL SPARE TIRES
As for height matching to your rears
315/30/18 = 25.8
335/30/18 = 26.06
295/35/18 rears = 26.2
305/35/18 = 26.4
275/40/17 = 25.8
Ive ran my M&H fronts on the GTO wheels with the following 3 rear sizes all trouble free in both street driving and track runs: 28 x 11.5 x 16 (ET STREETS 27.8)), 335/30/18 (NITTO DRAG RADIALS 26.06) AND 305/35/18 (ET STREET RADIALS 26.4)
Ive been 165 MPH on the highway on these, Racing a GT 500.
They felt ok @ that speed but on the track between 130 - 140 they feel great.
As for height matching to your rears
315/30/18 = 25.8
335/30/18 = 26.06
295/35/18 rears = 26.2
305/35/18 = 26.4
275/40/17 = 25.8
Ive ran my M&H fronts on the GTO wheels with the following 3 rear sizes all trouble free in both street driving and track runs: 28 x 11.5 x 16 (ET STREETS 27.8)), 335/30/18 (NITTO DRAG RADIALS 26.06) AND 305/35/18 (ET STREET RADIALS 26.4)
Ive been 165 MPH on the highway on these, Racing a GT 500.
They felt ok @ that speed but on the track between 130 - 140 they feel great.
Pro
Joined: Dec 2005
Posts: 619
Likes: 2
From: Destin FL
They are dead on 26" (M&H 26 X 4.5 X 17) NOT THE ORIGINAL SPARE TIRES
As for height matching to your rears
315/30/18 = 25.8
335/30/18 = 26.06
295/35/18 rears = 26.2
305/35/18 = 26.4
275/40/17 = 25.8
Ive ran my M&H fronts on the GTO wheels with the following 3 rear sizes all trouble free in both street driving and track runs: 28 x 11.5 x 16 (ET STREETS 27.8)), 335/30/18 (NITTO DRAG RADIALS 26.06) AND 305/35/18 (ET STREET RADIALS 26.4)
Ive been 165 MPH on the highway on these, Racing a GT 500.
They felt ok @ that speed but on the track between 130 - 140 they feel great.
As for height matching to your rears
315/30/18 = 25.8
335/30/18 = 26.06
295/35/18 rears = 26.2
305/35/18 = 26.4
275/40/17 = 25.8
Ive ran my M&H fronts on the GTO wheels with the following 3 rear sizes all trouble free in both street driving and track runs: 28 x 11.5 x 16 (ET STREETS 27.8)), 335/30/18 (NITTO DRAG RADIALS 26.06) AND 305/35/18 (ET STREET RADIALS 26.4)
Ive been 165 MPH on the highway on these, Racing a GT 500.
They felt ok @ that speed but on the track between 130 - 140 they feel great.
I'm trying to find front skinnies for drag strip only (so far with no luck).
Are these stock GTO wheels or GTO SPARE wheels? Where did you get them? How much did they cost?
Where did you get those spacers? I've heard that with spacers, you don't have to trim the inside of the wheel. Is that correct?
How much 60' and ET decrease is realistic to expect?
If you're only using the skinnies up front, what's the reason to try and match tire height front/rear? I don't plan on putting the skinnies on one of the rears - I've read that could damage the differential internals. And hopefully, on the front, I'll pick them up off the ground when I launch anyway.
BTW, I'm running M/T ET Street Radial II 305/35-18's on the rear.
Any additional info would be greatly appreciated.
