tire size

[donalde1]

How do I determine tire size for a 1922 buick 4 cyl. when I've only got the rims?

[Mark Shaw]

Depending on which model you have, your tires will be 4" or 4.5". Double it and add the rim diameter to arrive at your tire size.

[donalde1]

Thanks, Mark. I have a 1922 touring model (at least thats what the limited body components reflect). Rim diameter is 24 1/4" inclusive of rim bead. Rim width is 3 1/2" again including rim beads. Actual flat surface of the rim perimeter is 2 1/2". So based on these measurements my tire size would either be 4 X 32 1/4 or 4 1/2 X 33 1/4? Is that correct?

[Mark Shaw]

Without the fractions it looks right. If you tell me what model you have, I can look up the tire size.

[jbbuick22]

I think your rim size is 23" but I will check the parts manual for the correct size tire and rim when I get home tonight, 31x4 might be right. The 4 cyl uses a smaller rim and tire than the 6cyl.

JB

22-6-55 Sport Touring

[Mark Shaw]

My guess is 31 X 4 for a 4 cylinder car with a 109" wheel base.

[jbbuick22]

The parts manual gives 31x4 as the correct tire size for a 4 cyl car. The rim is 23".

JB

[donalde1]

thanks JB

[donalde1]

thanks Mark