The time has come to get new tires for our 56 Sunliner.  I know the car originally came with 670 size tires, with 710's coming on the Fairlane Victoria.  (Im going to get the Coker WW radials that have a bias ply look/shoulder)

If I look at the specs on line, the only real difference seems to be the listed Tire Section width.  The 670 is listed at 6.59", and the 710 is t 7.7"  The outside diameter is only different by 0.03", tread width is the same, rim size is fine, etc.

So I assume the 670 would look narrower/less "bulged out", and more like an original bias ply tire?  Would the 670 look more "correct"?  

Last time I bought WW radials from Coker, they recommended the 710's, which is what is on there now, and I always thought they looked a little too much like a modern radial, as the sidewalls bulged enough that the wire basket hubcaps rubbed on the whitewall (and made a squeaking sound from the baskets).  Would there be any noticeable difference in ride/driving characteristics?

Car is now used mostly for local cruising and Concours events, so we want it to look as correct as possible.

Not looking to start a debate about coker vs diamonback, etc.  Ive had several sets of cokers and they have been good.

Thoughts?




Ron Grove

Wauconda, IL

I can't help with the size, but if you're looking at the Coker American Classic series I have them. Their on my roadster, 5.60 15 and 8.20 15. They are virtually identical to the Firestone bias plies I took off, except for the tread itself. I like them, but more importantly the local builder who's been at it for 40 years likes them. Denny's probably driven more tires than I've seen. So I think you'll like them both for appearance and driving.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

Thanks!  I have their american classic whitewalls now, and i have been very happy with them as well.  But its time to replace them, and they now have radial WW's that have the "pie crust" shoulder and a different tread pattern so they look like bias ply tires.  I saw them in person at their booth at the auctions in scottsdale in January, and they look really good.  Im excited to figure out which size and get them mounted on the car!

Ron Grove

Wauconda, IL