And yet my wheels stick out and yours (apparently) do not.
Why is this?

 

I have no freakin idea. I do have some negative camber in the front.

MaczPayne runs wheels with identical specs to mine but with 255/40/17s

https://www.rx7club.com/showpost.php...postcount=4112

 

Yes Johnson has the same offset but you seem to not understanding how wheel offset works.

 

The offset of a wheel is the distance from its hub mounting surface to the centerline of the wheel. The offset can be one of three types.

ZERO OFFSET

The hub mounting surface is even with the centerline of the wheel.

POSITIVE OFFSET

The hub mounting surface is toward the front or wheel side of the wheel. Positive offset wheels are generally found on front wheel drive cars and newer rear drive cars.

NEGATIVE OFFSET

The hub mounting surface is toward the back or brake side of the wheels centerline. "Deep dish" wheels are typically a negative offset.

 

get some crown victoria rims i beleive they are 16s and have our bolt pattern

 

I know how offset works.

Offset relative to the CAR changes as a wheels gets wider. Example - a 17X9 +20 WILL STICK OUT FURTHER than a 17X8 +20. That is all I am saying here.

If you agree with that, then that is the end of this conversation. If you disagree, you need to reinvestigate how offset is measured, because you are misinformed.

 

Why so hostle? Is it because you are being schooled on how what works on an fc and what doesnt work. If you are going to give info, make sure its correct. Thats all that Im saying.

 

This is nothing hostile, it is simple math. If you can't agree with me in the example I gave above that a 17X9 +20 will stick out further than a 17X8 +20, it is very clear you have no idea what you are talking about with regard to offset, and how effective offset changes as wheels get wider.

Since this is the case, I will once again refer you back to post 14 of this thread. Do the math instead of blindly telling me I am wrong. If you are too lazy to do the math, use the offset calculator linked in post 14. I will link it here again for your convienience.

http://www.1010tires.com/WheelOffsetCalculator.asp

And I also recommend you follow your own advice and stop spreading misinformation and conjecture if you don't know what you are talking about.

 

grabbed popcorn about 6 posts ago.

 

Did you read post 14 and/or do the math and see who is right?

 

Believe what you want but we all know how right. Gl with your theory. Keep the misinformation up.

 

According to the website listed (reputable) The offset does vary per the width of the wheel. In my ignorance i assumed that offset was measured from the distance from the hub to the mounting surface of the wheel itself... (kinda true) EXCEPT that it would appear that the wheels offset is based on the distance (in MM) from the exact center of the wheel (taking the width of the wheel into consideration).. Even though the factor (x) -center of wheel- is always consistant as a 0 value the width of the wheel effects the actual distance the edge of the wheel sits off the hub or in this case the fender...

If I understand correctly a wider wheel with a lower offset will stick out further then a thinner wheel with a lower offset. NOW we are talking about milimeters here guys. 8mm is equal to 5/16th of an inch for reference...

Correct me if I am wrong.

 

You are exactly right. The offset changes in relation to the suspension and fender as you go wider.

But going back to my example a 17X8 +20 vs 17X9 +20. The 9 inch wheel will stick outward 13mm more, and extend inward toward the suspension by 13mm. That is 1/2 in per side. Both of those dimensions are enough to screw you if you are trying to get the biggest possible wheels under your fenders.

 

Yeah, I just bought 18x9's that showed up with 35mm offset instead of the 24mm that I ordered.. i am going to have to run a small spacer in the front...

 

Mustang wheels? If so they gave you wheels for the 05+ chassis rather than the 94-04 chassis. Call them and get the right wheels!! If you get large rear tires you may have to run spacers on the rear wheels too.

 

Is that your way of saying you did the math and are trying to save face now?

 

I did but these were on clearance and they ran out of the correct offset.. Its cool Ill just get the spacers for the front. For $150 shipped to my door from discounttire I cant complain...

 

Thats a good deal. Those will look good!

 

LOL at this thread. Robert and Ashley... hahaha

 

17x8 +20 wont poke at all, unless you have POSITIVE camber.

I ran a 16x8 + 0 with around 3* camber, maybe more and tucked it under with a pull.....