1966 big block proper tire specs

jeffitz · 03-25-04, 05:49 PM

for a repro radial tire for my new 1966 427/425 sunfire yellow convertible,it has p21565r15 blackwall radials and they appear small to me,any suggestionsfor a better look and would goldlines be more attractive? thanks

JohnZ · 03-25-04, 06:59 PM

It came originally with 7.75-15's; the corresponding current radial equivalent is 205/75-15. C2's have very limited tolerance for wider tires, rims, or offset changes before tires can break fiberglass, especially in situations like entering a driveway - the choices for change are pretty limited.

67HEAVEN · 03-25-04, 07:04 PM

jeffitz,

Welcome to

.

Some of us have managed to squeeze a bit extra rubber under there, in spite of what JohnZ says.

JohnZ · 03-25-04, 07:29 PM

Yeah, but it cost you more than ten bucks to accommodate that rubber

IH2LOSE · 03-25-04, 11:53 PM

Welcome to the forum

Here is a picture of my car with yellow lines on it.They are radial tires

magicv8 · 03-26-04, 08:59 AM

I'm with JohnZ. I ran Goodyear 195x75r15 Michelin and Goodyear tires for 14 years. Great bite in snow, in rain to 85mph, and on dry pavement - I'd rather spin tires than snap ujoints and frag clutches.

Both vendors quit making that size, and the Kelly-Springfield 195x75 is the same width at the bulge but narrower tread and 10% smaller diameter (seen at the speedometer). I will mount 205x75r15 tires - hopefully S rated whitewalls by the end of summer, so I can remove the 10% overdrive gears from my speedo cable.

I am really wary of damage to the fiberglass with the wheels turned to enter driveways. The paving people think everyone should be driving a truck. the approach angle of some of the mall/plaza driveways is steeper than the curbs in my neighborhood. I have to hit the driveways one front wheel at a time to keep the bottom of my air dam and license plate off the pavement.

66427-450 · 03-31-04, 03:05 PM

Most guys seem to be able to install 215/70's.... as long as they use stock offset 5.5" or 6" wheels. If you want to be sure you won't have any interference, I agree, 205/75's is the way to go.

03-31-04, 03:21 PM

215/70R15s on my 65 with repro KOs - Goldlines on Firestone Indy 500 Firehawks - very pleased with them as far as performance goes, but other favorites exist too. I think Goldlines look best against darker car colors, but that doesn't mean they look bad with white or lighter colors.

jeffitz · 03-31-04, 07:08 PM

my car is identical to yours and i just ordered goldlines 205/75r15 today,yourslooksamazing,thanks