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I had some aftermarket wheels installed from a trusted manufacture.
i called them to make sure I would have the correct fit but when I had them installed they stick out just a tad. I was going to get some fender flares to counter this but I am now wondering of this will be an issue if I bottom put the car (obviously wouldnt do this on purpose but maybe if I hit a huge pothole or something).
i called the company to discuss and was told that this particular model just sticks out a but due to the offset and it is normal.
should I be concerned with hurting destroying the body of my car? The rear particularly concerns me as there is a lip under the fender well.
the fronts are 9 inches wide and the rears are 11 inches. My car is a 2019 stingray.
As long as you're at stock ride height I don't think you're going to destroy anything. Your wheels are 1/2" bigger in the front and a full inch bigger in the rear than factory size.
As long as you're at stock ride height I don't think you're going to destroy anything. Your wheels are 1/2" bigger in the front and a full inch bigger in the rear than factory size.
do you know of people running these bigger sizes without issue?
my car is at stock height but that alone does not put my mind at ease. If the point came where it t did bottom out and there was not clearance it would be a disaster. Isnt the entire rear part of the car one piece of fiber glass?
But looking at my notes, the "correct" offsets (both as specified by Apex wheels, and by me) is ET57 or ET58 for the fronts, and ET78 for the rears. This is for the narrowbody cars (Stingray and Z51).
I looked at my fronts and it looks to me like your wheels have insufficient offset, i.e. they stick too far out.
I am not an APEX customer or shill. But I hear good things about their wheels, and their tech info is good. See e.g. this page that calls out even larger (front) tire sizes than I run, with the same offsets: https://support.apexraceparts.com/hc...ment-Guide#pst
But looking at my notes, the "correct" offsets (both as specified by Apex wheels, and by me) is ET57 or ET58 for the fronts, and ET78 for the rears. This is for the narrowbody cars (Stingray and Z51).
I looked at my fronts and it looks to me like your wheels have insufficient offset, i.e. they stick too far out.
I am not an APEX customer or shill. But I hear good things about their wheels, and their tech info is good. See e.g. this page that calls out even larger (front) tire sizes than I run, with the same offsets: https://support.apexraceparts.com/hc...ment-Guide#pst
do they make them for 20 inch rear and 19 inch front?
i checked their site and only saw 19 inches as largest.
do you know of people running these bigger sizes without issue?
my car is at stock height but that alone does not put my mind at ease. If the point came where it t did bottom out and there was not clearance it would be a disaster. Isnt the entire rear part of the car one piece of fiber glass?
No the entire rear of the car is not one solid piece. If you damage a rear fender, you'll be able to replace just that fender. A majority of the body panels are made up of what is called sheet molded composite. Not necessarily fiberglass, it's a hybrid almost plastic like material.
I don't specifically know anyone running your size setup but I'm sure you can find threads on here to hopefully answer your question.
wow your fronts are a half inch wider even. I am almost wondering if they sent me the wrong wheels lol.
do you have a pic of your car at the same angle by chance?
its not the width, this is where the offset comes into play
i am running a 19x9.5 +56 with a 255/35 tire on the front.. very minimal rubbing, not enough for me to do anything about, and a 20x11 +76 with a 295/30 tire on rear
Here is a closer image of my concern with the lip under the wheel well
Those tires are too narrow for your wheels. They are stretched which is not a safe situation. A 285/30-20 is designed to work on wheels 9.5 to 10.5 inches wide. Most tire shops will not mount tires to wheels outside the proper size.
Those tires are too narrow for your wheels. They are stretched which is not a safe situation. A 285/30-20 is designed to work on wheels 9.5 to 10.5 inches wide. Most tire shops will not mount tires to wheels outside the proper size.
I disagree entirely. We run 285 and 295 on an 11" width.
Those tires are too narrow for your wheels. They are stretched which is not a safe situation. A 285/30-20 is designed to work on wheels 9.5 to 10.5 inches wide. Most tire shops will not mount tires to wheels outside the proper size.
nothing unsafe about that fitment. A little stretch is no big deal. Racers do this all day long. If the tire goes to zero air pressure it might deteriorate faster due to sidewall angle but at that point you should be replacing the tire anyway
You got burned by the flow formed wheels for a narrow body C7. Most wheel manufacturers out there making flow formed wheels do not have the right offset for the 11" rear wheels so they stick out.
I went down the same road when I bought my Forgestars and now they are off the car and I am running stock Z51 wheels and saving up for forged.
You need at least 76mm of offset for a 20x11 but really need more if you want to run any tire bigger than the stock 285/30-20. Otherwise, they will rub even at stock height.
The only brand I've found that does a decent offset is HRE with their flow formed set. But at $3k you are in forged wheel territory so why bother with an inferior wheel type.
OP, Use the following calculator to determine new wheel sizes/offsets to keep your wheels/tires in the original location. If your wheels are larger than the originals and you want to maintain the outboard position, check and insure that you have the clearance on the inside between the inner fender wells and the tire. Just a suggestion, a 11" wheel should have a 315 tire on it.
C4 ZR-1; 11" wide wheel, 315 tire
C5 Z06; 10.5" wheel, 295 tire
C6 Z06; 12" wheel, 325 tire
C7 Z06/GS; 12" wheel, 335 tire https://www.1010tires.com/Tools/Wheel-Offset-Calculator
I realize that he has a narrow body, I'm just bringing to his attention what correct size tire he should be running for that width of a wheel. A 285 tire is too narrow for that width of wheel, as been stated before. And as specified by GM. Wheel width > tire size.
I realize that he has a narrow body, I'm just bringing to his attention what correct size tire he should be running for that width of a wheel. A 285 tire is too narrow for that width of wheel, as been stated before. And as specified by GM. Wheel width > tire size.
Question on wheels sticking out (help?)
