Q: Maximum Wheel and Tire Sizes
What is the largest size tires I can put on my Firebird?
A: The March 2000 issue of Car Craft has an article that deals with maximum wheel and tire sizes for various cars. It has a section on the 1967, 1968, and 1969 Camaro and Firebird and below is the text of that portion of the article.
1967, 1968, and 1969 Camaros and Firebirds
15-inch: 15X8 with 4.5-inch backspacing front and rear. With some tires the rear shocks will have to be mounted inboard; if you do that, some combinations of 9-inch wheels will work with 5.5-inch backspacing.
16-inch: 16X8 with 4.5-inch backspacing front and rear. The rear shocks will have to be relocated inboard. Use tires with an aspect ratio of 50 or less with section widths of 245 to 250.
17-inch: 17X9 with 5.5-inch backspacing front and rear. There may be lower control arm contact with some steering gears. Use tires with an aspect ratio of 40 or less and section widths of 245 to 255.
18-inch: 18X9 with 5.5-inch backspacing front and rear. Use tires with an aspect ratio of 35 or less with section widths of 245 to 25 in front and 275 in the rear.
A: Been several posts in the past on this Biggest size on an unaltered 1967, 1968, 1969 is 235-60 x15 on 8 in wheels G has 225s on 8 in snowflakes, I used 235s on 7 in snowflakes tried 245 on 8 in snowflakes and was too big.
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Content last modified: January 26, 2014 at 1:39 pm