325/50r15+15x10" tire= 4.5 or 5.5BS?

[DeucesAllin]

Title says it all:

My slicks are 325/50r15s.

The wheels I want come in 4.5" or 5.5" backspacing in 15x10 flavors.

Drag truck. Viking c/o's up front. Cant decide what to do with the rear...considering relocating leaf springs and swapping to a shorter axle.

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[BubbaGump]

Using this method has always worked for me...

https://stevestillwell.com/written-tech-articles/wheel-spacing-mystery-solved/

 

[DeucesAllin]

Wilco. Thx.

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