2nd Gen Non-Engine/Transmission Wheel offset

[JohnBoy5]

OK i think this is a simple question but the guy at the local tire shop could not answer hope i can find help on here. i think i have a bent wheel and am going to just get 4 after market wheels. i am seeing offsets.



So here is my question

1) what is the factory offset?

2) what offsets can i use and not look like a mexican truck or a truck that runs down the railroad?

3) does anyone know how to measure offset?

 

[CharlieFoxtrot]

Look here for an explanation and diagram of backspacing: Custom Wheel Backspace



Many wheel makers go by backspacing alone. If you need an offset measurement, once you know your backspacing and your width, you can determine your offset.



See here for how to figure offset: Offset of a Custom Wheel







Note that the terms "positive" and "negative" offset have confused people for years. Even I have used them incorrectly. (Amazing but true! ) Look at the diagram to see which is which.



For best looks (IMHO) and to not increase stress on the bearings, I prefer stock or near-stock offset. However, when adding wider wheels, you will probably need to mess with the offset somewhat. My 16x8 Eagle alloys are 1" wider than stock wheels, and I think the width was added to the outer part of the wheel, so my backspace is stock and my offset is 1/2" more negative. I don't really like it, but if the offset had been left stock and the wheel widened 1/2" on the outside and 1/2" on the inside, the wheels would have hit my brake drums. I'm fixing to go out and put brakes on the truck, so I'll measure the wheels while they're off and update if needed.



You have rear discs, right? If I had discs, I'd absolutely run 17x8 stock wheels from a newer Ram. I don't like the idea of machining my drums to clear the wheel, which is what I'd have to do. I may still do it though, since a set of used stock wheels costs about the same as one new aftermarket wheel.



HTH a little.



kevin