mr z28 are those the 275/40/18 s on that camaro in the pic with the pickup.. they look nice on there..

 

Thanks - Yeah - those are the 18's, but that was before I lowered it - the pictures with the 1" drop are on page 3 - it sat way too high with the 275/40/18 becasue the diameter is alittle bit bigger than stock - now it looks proper with the 1" drop - and I still have enough sidewall - most people go with the 35 series, but I wanted a bit more sidewall, so I went with the 40.

 

that looks really good, and man that car is clean.. thanks again and now its time to get a good tire brand...

 

What backspacing would you recomend w/ the AR rebels?? I also cannot find them in 9.5" wide. Can I fit a 10" wide up front?? 9" seems puny to me...

35mm?... can I get that in inches too, mabie.... it says on the AR site that the offset is 25 and the backside is 6. Whatever thay mean by backside. Will these fit? (no mesurement increments, mabie 25mm?, in that case I will be able to do the 10 wide)

 

I already know that,you can put the size of tire you want but they can leave too some problem.

Clearance issue,rubbing are due too a wrong size tire.With 275/35/18 or 285/35/18 your are not gonna have problem with clearance or maybe a little in the front when your turn your steering to the max on 18x9.5 wheels with the correct offset.

In that case 285/40/18 is 1.3" to tall,this can translate to a clearance problem.

Also the car will sit higher and will look like it is on 4x4 mode.

I was just trying to help man.

 

1.3" taller than stock -- I confirm. The car's ground clearance would go up 0.65 inches, but by looking at the clearance around the tires in the wheel wells, it would look like the car was lowered 0.65". So, I don't think it would really look like "4x4 mode", as you say. I haven't seen the setup in person, so I'm just speculating here.

The biggest issue would probably be, as you mentioned, that the tires would be very likely to rub when you turn the steering wheel all the way in either direction.

 

Ok again , then what size tire would be good all around for 18 s?? without rubbing in the front??

 

How wide are your wheel(9" or 9.5")

The info below is for 9.5" wide.

275/35/18 is good and should not rub.

And a lot of people are running 285/35/18 too without rubbing(only 5mm wider on each side).

These 2 sizes as i mentionne before are the closest one to the stock overall size.

I ve choose the 285 ones so that the tire is running over the wheel a little more than the 275 just for trying to protect them off accidental curb rash.

 

I'll second that from first hand knowlege. I hate the buggers!

The Kumho MX is a whole different animal though.

 

Mine are 9.5 wide.. thanks for the info..

 

If you are looking at an 18x9.5" wide wheel, with a 35mm offset, the tires are going to be very close to the outside of the front fender, if not actually outside it. The best offset for a 9.5" wheel is in the range of 45-56mm. Any more offset, and the wheels are sunk in the wheel wells and getting too close to the steering knuckle. Any less than 45mm, and they are moving toward the outside edge of the fender.

Some people like the "aggressive" look of a 35mm or 38m wheel, poking out from the fender a bit. Just make sure you like that look. And, the more you push them toward the outside of the fender, the more likely they are going rub. It isn't just the tire size that determines if it will rub on something... its also the wheel offset, and how well the wheel is centered in the fender.

All of this is covered in the FAQ stickied at the top of the Wheels and Tires forum topic listing. There are photos of my car with 56mm and 49mm offset 9.5" wide wheels on it. There is a photo of a T/A with 45mm 9.5" wide wheels in the front, and I think there is a link to another car with 38mm offset.

 

SO I CAN do a 25mm offset in the front....?....What do they mean by backside? I can do anyone of these...
I guess they don't make a 9.5 wide Rebel. my bad...


Size----Offset---Backside----Bolt Circle
18x9-----25--------6---------5-4 3/4

18x10----41------7 1/8-------5-4 3/4

17x9---- 25-------6----------5-4 3/4

I'm w/ ya so far.... 45-56mm offset @ 9.5 in wide will fit about any F-body... (sorry, sometimes really simple **** can confuse the h3ll out of me!!)

 

I am going to be getting me a set of these for the rear of my car... In a lot lower rim size though.

http://www.tirerack.com/tires/tires....e1=yes&place=2

 

No, that's exactly what I said you CAN NOT do. A 25mm offset 9.5" wide wheel wheel will stick outside the front fender by at least 1/2". If you are now looking at a 9" wide wheel with a 25mm offset, the tire will be about 1/2" outside the fender.
That is the "backspace" of the wheel. The distance from the face of the wheel hub mount (the surface that bolts to the axle hub) to the back edge of the wheel. That's how deep the back of the wheel sits inside the fender.

"Offset" is the distance the face of the wheel hub mounting surface on the wheel is "offset" from the centerline of the wheel. If you have a 9" wide wheel, and you have a 25mm offset (= approx 1" offset):

Centerline of wheel = 9.0 / 2 = 4.5"

Centerline + offset = 4.5" + 1" = 5.5"

That means the the 9" width of the wheel is "split", with 5.5" of the wheel width behind the mounting hub, and 3.5" of the wheel width sticking out toward the outer edge of the fender.

To add to the complication, that 9.0" width of the wheel is measured between the flanges that hold the tire bead on the wheel. To get the "backspace", you need to add the width of the bead retention flange to the amount you calculated above..... so if the flange is 1/2" wide, the 9" wheel with the 25mm offset has a:

Centerline + offset + flange = backspace

4.5" + 1" + 0.5" = 6.0" backspace.

A stock 16x8.0" 55mm offset 4th Gen wheel has a (approx) 6.625" backspace. So if you add an inch to the width, and reduce the offset by 1.2", you have moved the outside edge of the tire 1.7" toward the outside of the fender. That puts the tire outside the fender, or very close to being outside.

I already explained why the 25mm offset wheel won't look too good - outside the fender, or to close to the edge. The 41mm offset on the 10" wide wheel puts the edge of the tire within 1/8" of the 9" wheel with the 25mm offset.

The question is, where do you want the outer edge of the tire to sit? If you want it at the very edge of the fender, or slightly outside, you could use those wheels. I personally wouldn't do it, but that's just personal taste. With the tire that far out under the fender, you increase the chances of the tire rubbing on the fender.

 

I don't think they'll be too bad, come to think of it. Thanx for everything yall.. Including your patience!