64 Tempest 4 door - Rear Tire / Wheel Size - Pontiac GTO Forum
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post #1 of 15 (permalink) Old 04-11-2012, 12:15 PM Thread Starter
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64 Tempest 4 door - Rear Tire / Wheel Size

Hi guys.

I have a 64 4 door goat, that is set up pro touring style.
Now for cruising purposes I would like some rubber that hooks it for straight line launches instead of through the twisties.

My car is lowered quite a bit, so I need a wheel / tire combo that stays within the sheet metal.

I have looked through the forum and used the search function, but didn't have much luck.

Thanks
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post #2 of 15 (permalink) Old 04-11-2012, 05:16 PM
 
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try this thread....common question, but being that low you will want to mock them up

https://www.gtoforum.com/f50/wheel-ti...-66-gto-37300/

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post #3 of 15 (permalink) Old 04-11-2012, 05:49 PM Thread Starter
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Ey, weren't we supposed to meet on WW last year?
This year we actually have to make this happen haha

@ Topic - I see one of those WheelRite gauges in my near future. Wouldn't hurt to own anyway.
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post #4 of 15 (permalink) Old 04-11-2012, 06:11 PM
 
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yep....hey thought that was you. I am there with the Tempest this year come hell or high water....

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post #5 of 15 (permalink) Old 04-11-2012, 06:16 PM Thread Starter
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My goat is getting a 3.90 Posi the next couple weeks.
Hence my interest in beefy rubber.
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post #6 of 15 (permalink) Old 04-11-2012, 08:57 PM
 
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have a chevy 12 bolt i picked up cheap with a 3:55 posi gear waiting to go in...may keep waiting with gas over 4.00 the 2:56 get surprising mileage with the 463 and it will still burn the tires off with the flick of your ankle

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post #7 of 15 (permalink) Old 04-11-2012, 10:03 PM
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Quote:
Originally Posted by Instg8ter View Post
have a chevy 12 bolt i picked up cheap with a 3:55 posi gear waiting to go in...may keep waiting with gas over 4.00 the 2:56 get surprising mileage with the 463 and it will still burn the tires off with the flick of your ankle
I hear ya. I was just thinking today while cruzing around that I'd like to get a 3.55 posi soon. Then I thought my 2.78 is doing just fine behind the 462 as long as the gas prices are rising..... I think I'll be waiting too.....



SOLD.....
462ci, 4spd
Performer Intake, Mild Cam
Pertronix Ignitor III
Accel Super Coil, Accel 8.8mm Wires
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post #8 of 15 (permalink) Old 04-12-2012, 10:47 AM Thread Starter
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I get 6 mpg, so how much worse can it get? LOL

BTT:
Anyone got any generic input on tire / wheel size?
Looking around it seems that 15x8x5 with 255/60/15 should work in the rear without touching anything.
Is that assumption correct?
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post #9 of 15 (permalink) Old 04-29-2012, 09:50 PM Thread Starter
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Question to my fellow drag racers.
What's the more desirable size for a drag radial:
275/60/15 or 275/50/15?
My first thought was the 60 series, as it has more sidewall.
But when I looked at the detailed measurements I noticed that the 50 series has WAY more tread width?!? The average 60 has ~ 8.5, the average 50 has ~ 10.
Now I'm not sure which way to go. Gearing would work with either, but the 60 would be better for on the street - no doubt.
INPUT PLEASE!!!
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post #10 of 15 (permalink) Old 04-29-2012, 10:10 PM
 
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i like the bigger sidewall on these cars, lowered looks good but not with rubberband tires IMHO. the 5" backspace should be good up to 255, after that i would do some measuring to make sure before i spent a bunch on rubber that rubs.

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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Wheels & Tires

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