Hi,

I am wondering if anyone did any measuring to their wheel to clear brakes fitting?

I am looking at Fikse rims to get the entire measuring to put it in the sheet.

Here is the website:
http://www.fikse.com/images/fikse_fitment_worksheet.pdf

I can’t get the measuring since I don’t have the stock wheels on the car any more cause I have the big C6 Z06 brakes up front and I need rims to clear the brakes. Also I am about five hours away where my car is at my parent’s place.

I am asking for a favor if anyone could do it with their front and rear stock wheels on and measure it? Don’t worry about measuring the brakes on the sheet.

Please help thanks.

 

No, one has any measuring of their stock brakes?

I would like to know the measuring in this website http://www.fikse.com/images/fikse_fitment_worksheet.pdf
on number 3 Measure Caliper and 5 Hub Length.

It would take a few seconds to measure it. I have measured my C6 Z06 brakes, but need to compare the stock brakes. Non-1LE brakes.

Let me know thanks. Would be a big help.

 

Surprised no one has any measuring of their stock brakes?

I got the information from Fikse saying that I can run with 18x9.5” with 275’s wide tires with a 5.625” Backspacing up front with my C6 Z06 brakes.

Can anyone tell me if this size 5.625” backspacing will work without the wheel sticking out or be inline with the fenders or touching anything? My car is lowered.

Also for the rear still unsure, about the backspacing. I plan to use C6 Z06 brakes for the rear and was told to use a 6.625” with the 18x11” with 315’s wide tires. Same thing my car is lowered. I am surprised that Fikse told me to use 6.625” BS, wish I thought it would be more than 6.625” BS.

From my understanding that the stock and the C6 Z06 brakes offset are different. So I try to work out the math to get it correct. Still confusing about the backspacing.

I heard that the stock brakes works best for the front 5.5” and rear 7” backspacing.

I did my homework measuring from the is website http://www.fikse.com/images/fikse_fitment_worksheet.pdf
with my C6 Z06 brakes up front.
#2 Measure Frontspacing is 5 3/8”,
#3 Measure Caliper 1 11/16” and
#5 Hub Length 1.75”

According to the other website KORE3 has the information measuring. It shows it has a 1.69” and I got the #3. 1 11/16” approx. 1.6875” still match the same measuring.

Can anyone help me if this is correct or what should the backspacing be?

Thanks and let me know.

 

Any one can help me figure the correct backspacing. Come on some of you may know what it should be.

Any guide where I can find out about the backspacing to talk to someone about it?

Please help thanks.

 

i have the typical c5 front upgrade. From the edge of the tire, (18" wheels, 245/40/18) i have 1/2" from the tire to the outside edge of the fender. keep camber adjustments in mind.

thats with a 18x8 with 4.5" of bs, so to keep the outside of the tire flush, you can do with a 9.5 and the typical brake upgrade is 5.5" of bs. If you used the 5.625 like suggested, the tire will be in from the fender about 1/8" and shouldnt hit anything in the wheel well. Might rub a tad a close to full lock, maybe not, depends on other variables.

Now the brakes clearing the wheels depends on how the wheel is designed.

for the rear, to keep the wheels about the same as the front, you would want the 18x11 with 7" of bs, thats with the tire about dead flush with the outside of the car.

that BS will require some inner fender mods in the rear. the bumpstop area most liekly has to go, and some hammer in the fron of the well.

if you dont like that, go with a 10 and a 295 tire. You will find that most tire makers end at a 295 in the 18" size, your optional for a 315 are very limited.

and with the 10, you can use 6" of BS to be flush, or 6.5 to be in a little and fit nicely

the other thread going right now asking for pick os 18x10 with 5" of bs, has some pics of a car with 18x10 with 6.5 of bs.
https://www.thirdgen.org/forums/whee...18x10-5-a.html
my car is in post 10, and the other red car is in 17? we both have the some front spacing, so the tires sit in the same spot under the fender lip

now the tires will be under the fenderlip a bit, so if the car is really low, you can possibly rub the tire on the fender lip and cause damage tot he tire.

 

Thanks,

I am not sure how much different the C5 vs C6 brakes. I am sure that the C6 brakes are a bit wider and should push the wheels out a bit.

It would make sense if the C6 brakes are wider and would have a bit more backspacing than the 5.5” bs. So the 5.625” bs will be okay…I hope.

For the rear, I thought would be a bit more than 7” bs since I might run C6 brakes in the rear. Maybe a 7.125” + bs. or more and use a small spacers?

Yes, I am aware of removing the bumpstops and cutting the inner metal and that why I wanted to run 315’s in the rear.

Thanks again.

 

the c6 front setup should not move the wheel anymore than the c5 kit. The wheels only move the width of the rotor hat, usually about 1/3". for the rear, it should not move the wheel at all, since you already have discs or drums, which slide over the studs ontot he axle flange. the c6 will do the same thing, the axle length doesnt change.

with a 18x11 you cant really use less than 7" of BS as still be flush with the fenders. IF you use a little more, 7.125 or whatever, thats fine, a small spacer wont hurt if you need it.

personally, i like the wheels in a little, and have mine right about where i like to see them. That would require 7.5" of BS, but i dont know if thats possible without major surgery. Im using 8.5" of BS, but ihad to minitub the car and change to coil-overs because the conventional springs wouldnt clear the wheels.

Like i said before though, the c6 calipers is much wider on the outside face of the rotor and need proper clearance to clear the wheel. Make sure the wheels are made to clear the brakes.

have you even looked for 315's yet? i only know of 2 in that 18" size. Thats why i suggested sticking with a 295 because the options are much better

 

Yes, it seems 7" BS is max, cause if go more it may touch the Lower Control Arms. It looks like I will have to stick with 7" BS, but that with stock brakes. I will have to find more about the clearance if I could use a bit more BS.

I have seen some 315 tires, and found some that I might be interesting in.

Thanks again.

 

I got another information saying that I can use the front 5.875" backspacing with the 18x9.5" rim using a 275's wide tires.

Is that backspacing too much for the front?

Is anyone using either 5.5" or more backspacing with 9.5" wide rims with 275's tires? Does the wheel stick out or inline with the fenders or right under the fenders?

A picture of a close up front would be great.

Thanks.

 

i've seen 5.5 used up front, and they wont stick out at all. The 18" wheel will clear the tie rods, anything smaller will hit it. 8.875 and a brake upgrade should still work, but i dont know anybody running that offhand.

take your wheel off and put a 26" long straight edge on the rotor hub and measure back with teh wheels straight and turned and see what gets in the way and when.

 

Thanks.

What about the wheels being inline with the front fenders?

Yes, the 18" will clear the tie rod. What I mean if you use more than 5.5" bs with 275's wide tires going with 5.875" bs with C6 Z06 brakes. Will that rub on the inner sway bar?

Hope someone has a front 9.5" wide rim with 275's tires with 5.5" bs or more that can show a close up pictures.

Thanks again.

 

Anyone have any pics?

Would like to see some.

Thanks.

 

do i need to buy you a tape measure?

 

Very funny.

The problem is that my car is at my parent's place and I am about five hours away. I wish I could measure it.

I just want a close up pictures between the fender and the wheel, so that I know how much of a different it will be.

I am just nervous if the 5.875" bs will do a lot of rubbing on the sway bar, cause I haven't seen anyone run more than 5.5" bs when I was doing the search.

Also my car is lowered.

Maybe someone will come across.

Thanks and hopefully will go to my parents place for the long weekend in May.

 

for what its worth, since i dont have steering stops, i can actually rub the frame by the steering box long before i hit the sway bar. I seem to have some crazy steering angle going on here. i really need to do something for a steering stop.

Im working on the rear of my car at the moment, might be a little while, but when its done, if nobody else chimes in, i can grab some measurements for you

 

Thanks man, that be great.

I wish I have your rear wheels and the work you did in the rear.

Can you modify my rear for free?

 

hahahahahaha....no I dont plan on doing that kind of work again any time soon. It was a pita, took forever. That doesnt even include the interior work, which still isnt finished.

 

Just so you know, as of a few months ago Fikse went under. That may have changed by now, but last word I heard they had gone down.

 

Thanks and yes, they were gone for awhile, but Fikse are now back in business and are taking place in BC, Canada.

 

5.875 of bs with a floating hub brake upgrade will clear the strut, really close to the tie rod, will rub at close to full lock.

may want to stick with 5.5 unless you can get to your car to measure really well around the tie rod and the wells.

 

Thanks, for checking it out.

I think I will go with 5.625".

Thanks again.