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Re: 41 Front End Suspension
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Yeah it didn't occur to me that the wrong tires could be on the car.

According to this interchange:

Coker Tire Size Cross Reference/Interchange

P 235/75R15 interchange with 8.00-15 tires, which is what I have on my Cavalier IIRC.

8.20-15 tires should be even wider I think, so I would worry about that

According to the Packard Model Info on this website, you should have 7.00-15 tires on that car.

Packard Model Info, 1941 120 Convertible Coupe

The closest interchange Coker lists is 7.10-15, which would be 215/75 R15, considerably narrower.

Posted on: 2022/11/28 19:27
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Re: 41 Front End Suspension
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I talked to both DB and Coker today. The nomenclature for the true modern vs modern like is a bit different. Smaller section width is better...

A 800r15 has a section width of ~8.0"
A 820r15 has a section width of ~8.2"
A 235/75r15 has a section width of ~9.4"

So, if I go with a 800r15 the tire height increases by just .5"; that will give me a narrower bulge width of ~1.4" (side to side) or ~.7" further away from the tie rod.

Looks like the 8x0 series is the way to go.

Thanks again for all of the input!


Posted on: 2022/11/29 10:52
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Re: 41 Front End Suspension
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Highly recommend DB's bias ply looking tubeless radial tires.

Posted on: 11/30 14:03
We move toward
And make happen
What occupies our mind... (W. Scherer)
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