Re: Assembly of Sidemount Covers for 1936 Packard 120

Posted by Don B On 2023/11/17 10:11:43
I've come to a conclusion, but I'm interested in this group's thoughts.

The 7x16 Coker bias-ply tires bought by my dad in 2004 are simply too large.

1. My sidemount covers do not fit the tire. The tire is simply too wide...and the tire diameter seems to be slightly too large. The cover will just barely cover the tread in width, but leaves no room for the side cover to fit under the tread cover. Also, when all the way on, the tread cover cannot "spring" down to the correct diameter for the side cover. All evidence is that I do have the original sidemount covers.
2. Looking at the rubber in the fender well, the tire is about a half inch too wide to seat properly. The rubber is original to the car. Now, based on the very helpful tire size guide provided by HH56, the tread width of 7x16 tires should be 5.4in. That would match up very well to the rubber in the fender well. Coker lists the tread width of their Firestone 4.00 Inch Whitewall | 700-16 (which is what I have) as 5.6in. However, when I measure the tread with of the tires, it seems to be right at 6in. I don’t think 0.2in difference would be a big deal, but more than a half inch is.

So, question….Are these tires from Coker different today than in 2004? My tires are clearly marked 7.00x16 on the sidewall.

Ultimately, when I replace these tires, I want to get tires that fit correctly….including the sidemounts. Based on what Coker currently shows on their website, these should be right on. It’s just that the 2004 versions I currently have, are anything but right on.

Otherwise, If the 7x16s aren’t going to fit the sidemounts properly, I may change my plan a bit and buy five 7x16 tires and put the fifth one in the trunk to use as a true spare. Then, buy two 6.5x16s for use in the sidemounts to be “show” only. I just hate everything about that, though.


EDIT: I did try reducing air pressure as suggested earlier. The measurements and photos are with the tire at less than 20psi.

Thoughts?

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