Offset vs backspacing?

[68Formula]

And I read and read, learned and listened, still the same. Till one day on the crapper reading one of my favorite novels. Ok, no, not my wifes People magazine but my "Chassis Engineering" book. I kinda take it all around the house


In order to reduce your cars front scrub radius you should use wheels with zero or negative offset. Zero offset means that the mounting surface of the wheel is on the same centerline as the tire. Because a 10 inch wheel is actually 11 inches flange to flange, the backspacing for a zero offset on the 10" wheel is 5.50 inches.

Be careful. For some strange reason, Herb's definition of positive vs. negative offset is different than typically used today. He calls negative "mounting surface outboard of the wheel centerline," and then uses an example of 1" negative offset creating a 11" wheel with a 6.5" backspace. Usually a positive offset by most definitions today, creates more backspacing. (The above links are prime examples).

[JRouche]

Be careful. For some strange reason, Herb's defition of positive vs. negative offset is different than typically used today. He calls negative "mounting surface outboard of the wheel centerline," and then uses an example of 1" negative offset creating a 11" wheel with a 6.5" backspace. Usually a positive offset by most definitions today, creates more backspacing. (The above links are prime examples).

Oh yeah, not just that one, there are other typos. Someone has a thread asking about which books are good. I wrote this below.. Thanks for the heads up.. JR

That one and "how to make your car handle" by Fred Phun.. I use both and they cover everything I need. Even still, you gotta watch the reading, I "think" I have seen some typos in both books. But if yer reading it carefully you can pick it up and realize it was just a typo. JR