I had to put new tires on the Grand Prix. The older radials that were on it were starting to come apart.
I liked the thinner 5/8" white wall that it came with but due to the tire shortage and general status of 14" tires it was not meant to be. I was trading off size (P225/75R14 vs up one size vs down one size), white wall (and width) vs redline, availability and price.
After agonizing over my excel spreadsheets I made a decision and went with one size down (P215/75R14) and 1" white walls from Coker. Took about 4 months to get them through Summit Racing.
I wasn't so sure if I loved them at first, but upon further review I see that they are actually a bit more "authentic".
Before, after and vintage photos shown below.
K
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'63 LeMans Convertible
'63 Grand Prix
'65 GTO - original, unrestored, Dad was original owner, 5000 original mile Royal Pontiac factory racer
'74 Chevelle - original owner, 9.85 @ 136 mph best
http://www.superchevy.com/features/s...hevy-chevelle/
My Pontiac Story: http://forums.maxperformanceinc.com/...d.php?t=560524
"Intro from an old Assembly Plant Guy":http://67-72chevytrucks.com/vboard/s...d.php?t=342926