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Thread: 1970 GTO Judge
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11-02-2024 #1
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I use a 305/35-18 in the rear of my 70 and it fits great. Yours is a snug fit because of the tire height more than the width.
Originally Posted by gtome
Andrew
1970 GTO Version 3.0
1967 Cougar build
GM High-Tech Performance feature
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11-03-2024 #2
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Yeah I'm really wanting to go with a tucked look. Maybe a 30 series would fit better. If I remember right, a 305/30 is over an inch smaller in diameter. Or I may have to drop down to a 295.
11-03-2024 #3
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Originally Posted by gtome
It is easier to tuck a smaller diameter tire than a larger one. Also, be aware that lowering the rear of these cars significantly will cause driveline angle problems that are not easily addressed.
Andrew1970 GTO Version 3.0
1967 Cougar build
GM High-Tech Performance feature
My YouTube Channel Please Subscribe!
Instagram @dr__efi
I deliver what EFI promises.
Remote Holley EFI tuning.
Please get in touch if I can be of service.
"You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her
11-03-2024 #4
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Words of wisdom. Raising the tunnel on these cars is a lot of work based on my experience. So is waiting for the Driveshaft Shop to ship your CV driveshaft if you go that way. Originally Posted by andrewb70
Don1969 Camaro - LSA 6L90E AME sub/IRS
1957 Buick Estate Wagon
1959 El Camino - Ironworks frame
1956 Cameo - full C5 suspension/drivetrain
1959 Apache Fleetside
11-03-2024 #5
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That's interesting. After reading your posts, I went to a tire size comparison website. A 205/75/15 (stock-ish size) is almost exactly the same diameter as a 305/30/20. My goal is to have the rim be just under the wheel lip at ride height. Maybe I will grab a 305/30 and see if that fits better. I prefer the look, and I'm sure the ride, of a 35 series tire, but there will have to be a compromise somewhere.
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