[cdb95z28]

Originally Posted by MatthewAMEL

oh, ffs...you win.

I meant the Apex F8X that are being produced in the ~1LE fitment.

https://www.groupbuyparts.com/index....l-q1-2017.html

[cdb95z28]

It appears GM may have taken into account the use of 19" wheels with the 1LE, and/or giving more room for more negative camber

2016 SS


2017 1LE

[MatthewAMEL]

Originally Posted by RUQWIKR

I wish the stock studs front and rear were full thread because you could use a spacer and still have good thread engagement. On stock wheels, looks to be between 14.6 and 15mm of engagement when the lug is torqued.

That's a "normal" amount of engagement with similar materials (steel stud, steel lugs) - M14mm stud and at least 14mm engagement. Depending on wheel mounting flange thickness, you may have more or less than stock engagement.

I marked a lug nut and got right at 10 full rotations to full torque after initial thread engaged fully. I also used a paint marker on a stud and got the same measurement.

If someone has different info on "normal" amount of engagement, post it up.

Hey, have at it. Mechanically speaking any more than one turn is 'fully engaged', right?

[glamcem]

Originally Posted by cdb95z28

The 10.5" wheel and a 3mm spacer actually are further away
I used a 285 tire on both, just to eliminate the tire variable, since the talk (at this point) is on the wheel to strut clearance
Attachment 858275

Interesting, for some reason my calculations are different

20x10 +20 mm
by going 19x10 +25mm it should move it 5mm closer to the suspension
and 19x10.5 +22mm should move it 2mm + the 6mm (offset difference divided by 2) which would make it 8mm total. And with the 3mm spacer it should offset that difference

[glamcem]

Originally Posted by MatthewAMEL

oh, ffs...you win.

I meant the Apex F8X that are being produced in the ~1LE fitment.

https://www.groupbuyparts.com/index....l-q1-2017.html

Although it's the ideal offset for the stock 305 size, it's not ideal for those who want to go with wider tires in future (like 325s). The ideal offset IMO, would be something like +30-35mm so it would compensate the extra rubber, in my example it will poke out a bit (18mm) but it's manageable with 305 tires. For the 325 however, I will most likely need some sort of fender flare like C7 Z06

Originally Posted by RUQWIKR

I wish the stock studs front and rear were full thread because you could use a spacer and still have good thread engagement. On stock wheels, looks to be between 14.6 and 15mm of engagement when the lug is torqued.

That's a "normal" amount of engagement with similar materials (steel stud, steel lugs) - M14mm stud and at least 14mm engagement. Depending on wheel mounting flange thickness, you may have more or less than stock engagement.

I marked a lug nut and got right at 10 full rotations to full torque after initial thread engaged fully. I also used a paint marker on a stud and got the same measurement.

If someone has different info on "normal" amount of engagement, post it up.

If that's the case longer studs in the front might be a good option. I will look into that

[RideZX6R]

For some reason your pics on the last page aren't showing up... Weird

[glamcem]

Originally Posted by RideZX6R

For some reason your pics on the last page aren't showing up... Weird

Thanks for letting me know. I've updated the links so that they should be visible now

[tx6g1le]

Originally Posted by glamcem

I will most likely need some sort of fender flare like C7 Z06

Im happy to help if you need some direction on them. That was my ultimate goal when I installed them but I can't find the right wheel in 19" that I like. I'm glued to this thread and wish you the best of luck Glamcem.

[glamcem]

Originally Posted by tx6g1le

Im happy to help if you need some direction on them. That was my ultimate goal when I installed them but I can't find the right wheel in 19" that I like. I'm glued to this thread and wish you the best of luck Glamcem.

Thanks I think I've seen your post before. I was thinking the same thing before even I got this car then I saw the post and made sure it can be done Ever considered doing the same for the rears? I might try doing that when I am ready to switch to 325s (after the Trofeo Rs)

[tx6g1le]

Originally Posted by glamcem

Thanks I think I've seen your post before. I was thinking the same thing before even I got this car then I saw the post and made sure it can be done Ever considered doing the same for the rears? I might try doing that when I am ready to switch to 325s (after the Trofeo Rs)

I'd like to do the rears but I need to find the right wheel/tire set up. I'm like most of us in this forum hoping to find clarity on the square vs. staggered setup. I'd like to run 305's all the way around (hence the fender ext.) but I know it'll take finesse on the offset. I'm waiting to see if you make it work!

[glamcem]

Originally Posted by tx6g1le

I'd like to do the rears but I need to find the right wheel/tire set up. I'm like most of us in this forum hoping to find clarity on the square vs. staggered setup. I'd like to run 305's all the way around (hence the fender ext.) but I know it'll take finesse on the offset. I'm waiting to see if you make it work!

Sure, I will keep you guys updated here on this thread

[glamcem]

UPDATE: I had a chance to testfit the wheels after the track alignment (-2.2 camber up front) and it was almost touching with 3mm spacer. I then tried to use the 5mm spacer and it looks like it's going work. The camber bolt portion is not touching but a bit close for my taste so I will have my mechanic grind those areas and if I can get about 2-3mm additional clearance by doing that it will be fine for me I will also use longer studs with Gorilla lug nuts even many people use 5mm spacers without any other modifications.

IMPORTANT: Please use these at your own risk as YMMV




Hard to show in this picture but clearance is very tight it looks like it's touching but it's just the angle of the light:


These are the areas that I am planning to have trimmed/grinned

[RideZX6R]

Might go about this setup myself... I don't mind a little grind (but no bumps lol)

[glamcem]

Originally Posted by RideZX6R

Might go about this setup myself... I don't mind a little grind (but no bumps lol)

cool, I will let you know how it goes. I ordered my longer OEM wheel studs after seeing this thread:
http://www.camaro5.com/forums/showthread.php?t=130651