My plan as we start into winter is to take the front wheels off my 289 car (15" FIA's with Goodyear Power Cushion) and look at the space in the rear particular to muffler.
If this looks kosher, I will switch to 15" Sunbursts using Blue Dot or Power Cushion bias tires. Bias = Yes!
Why Bias?
The story about the initial track testing of the AC MKIV was that Bob Bondurant (Ford's driver of choice) drove the MKIV with the 16" wheels using Gatorback's and could not keep it on the track. Later testing, after consult with the original designer of the 60's frame, was that the chassis and car benefit from 15" (higher aspect ratio sidewall) as a better choice as the initial frame and design of the car itself used the interaction of chassis and tire for ultimate handling. So in a nutshell, for the street its of no matter, 15" wheels using higher aspect ratio and even bias tires benefit the handling according to initial internal Ford testing. Once they switched to the 15's in the Ford testing Bob said, the car has been fixed and it tracked perfectly. Who knew?
Fun facts we all want to know...…
Also will give a cool street car look to the stance of the car..... Jeff