Highboosting///M3's DR Wheel Thread!

Highboosting///M3 · #1 (**permalink**) 03-03-2007, 05:30 PM

This thread was started because the subject regarding massive hp versus traction was brought up in another thread. Since the thread went off topic the posts regarding this subject were moved in favor of the original poster.

This thread is about massive power!
This thread is about traction!
This thread is about the drivetrain holding with that traction!

Quote:

Originally Posted by Josh

I've found it is difficult to hook up with 18s, even on the street.

You have 19s on your GT2, correct? That must be hard to hook. Looks so sick though.

I'm looking into a 15" rim setup later for the street. Problem is once you hook that well, you break stuff. So beefing up the half axles, driveshaft and other stuff is essential.

Josh · #2 (**permalink**) 03-03-2007, 05:57 PM

Quote:

Originally Posted by Highboosting///M3

You have 19s on your GT2, correct? That must be hard to hook. Looks so sick though.

I do have 19s on the GT2, however traction is not an issue at all on that car. With 315s in the rear and having most of the weight of the car over the rear axels to take advantage of them, the car has incredible grip, even with the 600 hp package that I have on it.

Quote:

I'm looking into a 15" rim setup later for the street. Problem is once you hook that well, you break stuff. So beefing up the half axles, driveshaft and other stuff is essential.

15s would be great for the track (1/4), but handling on the street would make me a bit nervious as they may have an adverse effect on the car's stability at speed due to the large increase in sidewall.

Paradigm_Guy · #3 (**permalink**) 03-03-2007, 06:35 PM

Quote:

Originally Posted by Highboosting///M3

You have 19s on your GT2, correct? That must be hard to hook. Looks so sick though.

I'm looking into a 15" rim setup later for the street. Problem is once you hook that well, you break stuff. So beefing up the half axles, driveshaft and other stuff is essential.

Bogart Wheels is in SD and does custom drag wheels. I had a set of 15x8's made for my Z32 from them years ago.

Highboosting///M3 · #4 (**permalink**) 03-03-2007, 07:01 PM

Quote:

Originally Posted by Josh

I do have 19s on the GT2, however traction is not an issue at all on that car. With 315s in the rear and having most of the weight of the car over the rear axels to take advantage of them, the car has incredible grip, even with the 600 hp package that I have on it.

That is great information Josh. Thank you! Makes me feel really good that your 315X19s give that great of traction along with the engine/turbo system weight in rear. I have 315X18 drag radials now and a stereo system in the trunk that might weigh about 300lbs which will help.

Quote:

Originally Posted by Josh

15s would be great for the track (1/4), but handling on the street would make me a bit nervious as they may have an adverse effect on the car's stability at speed due to the large increase in sidewall.

Yeah those would be only for the track except for running down some big hp cars/bikes on the freeway.

Quote:

Originally Posted by Paradigm_Guy

Bogart Wheels is in SD and does custom drag wheels. I had a set of 15x8's made for my Z32 from them years ago.

Thank you! That helps me a ton.

Paradigm_Guy · #5 (**permalink**) 03-03-2007, 09:29 PM

Quote:

Originally Posted by Highboosting///M3

Thank you! That helps me a ton.

Disregard. I just looked up their website. Apparently they've moved to Phoenix.
Bogart Racing Wheels

Highboosting///M3 · #6 (**permalink**) 03-03-2007, 10:06 PM

Quote:

Originally Posted by Paradigm_Guy

Disregard. I just looked up their website. Apparently they've moved to Phoenix.
Bogart Racing Wheels

MrBlonde · #7 (**permalink**) 03-04-2007, 01:39 AM

Quote:

Originally Posted by Highboosting///M3

You have 19s on your GT2, correct? That must be hard to hook. Looks so sick though.

I'm looking into a 15" rim setup later for the street. Problem is once you hook that well, you break stuff. So beefing up the half axles, driveshaft and other stuff is essential.

Yes, you will break driveline with a hard launch on slicks and big power. it's only a matter of time.

The thing to remember is that wide 18" drag radials are fine for street, but they aren't worth shit at a drag strip. You can fit them 435 wide .. they still aren't worth shit. :-)

Remember the drag racing mantra .. taller ... bigger sidewalls .. taller .. bigger sidewalls ... :-D

Highboosting///M3 · #8 (**permalink**) 03-04-2007, 12:26 PM

Quote:

Originally Posted by MrBlonde

Yes, you will break driveline with a hard launch on slicks and big power. it's only a matter of time.

The thing to remember is that wide 18" drag radials are fine for street, but they aren't worth shit at a drag strip. You can fit them 435 wide .. they still aren't worth shit. :-)

Remember the drag racing mantra .. taller ... bigger sidewalls .. taller .. bigger sidewalls ... :-D

Thank you Kenny! That is why I am looking to do 2 setups. I have the 315X30X18 for the street. When I road race I will have to get some different rubber than that. For strip I am looking into possibly a 328 rotor/caliper setup in rear and custom 15" rims. I will jack up the coilovers to see if I can fit 28" tall slicks under there. If not I will do 26". I don't care about being on the special list anymore. I just want to run a good ET/trap.

Defacto · #9 (**permalink**) 03-04-2007, 08:13 PM

Cam, we all know you're going to try pretty hard at the strip! And with the setup you're talking about, you know your times will be very impressive! Can't wait to see what they ultimately are!

Highboosting///M3 · #10 (**permalink**) 03-04-2007, 08:30 PM

Quote:

Originally Posted by Defacto

Cam, we all know you're going to try pretty hard at the strip! And with the setup you're talking about, you know your times will be very impressive! Can't wait to see what they ultimately are!

Hey thanks! The more I keep thinking about this car, the more I am realizing the true purpose for it. I haven't seen a BMW go down the 1320 with full slicks on 15s & skinnies up front in the US yet. Time to do things right.

So...what would be the best slicks at 28" tall with 15" rim?

What is a good drag racing rim?

Defacto · #11 (**permalink**) 03-04-2007, 08:39 PM

I know Weld makes decent wheels, and that alot of Chevy bolt pattern wheels will probably be just close enough to fit on the car (5x120 vs. 5x120.3)...the Bogart wheels are probably a good option as well. As far as wheels go, there are more options than that, of course, however, given that alot of the Chevy wheels can be either bolted on, or slightly modified. Measure out the area you have in your fenders, and get some massive M/T slicks. If you're going to do skinnies, however....looks like you'll be getting yourself a full 328i brake setup to put on for track...

Highboosting///M3 · #12 (**permalink**) 03-04-2007, 08:46 PM

Ryan Woon uses what I put below:

15x4 and 15x10 Weld Drag Wheels

28x10.5x15 Mickey Thompsons and 26x4x15

His specs are below:

Weight of vehicle = roughly 3650 lbs.

Best 60ft to Date: 1.38

Best 1/8th 5.66@126

Best 1/4 Mile 8.62@169.0

Best MPH 171.28mph

Quote:

Originally Posted by Defacto

I know Weld makes decent wheels, and that alot of Chevy bolt pattern wheels will probably be just close enough to fit on the car (5x120 vs. 5x120.3)...the Bogart wheels are probably a good option as well. As far as wheels go, there are more options than that, of course, however, given that alot of the Chevy wheels can be either bolted on, or slightly modified. Measure out the area you have in your fenders, and get some massive M/T slicks. If you're going to do skinnies, however....looks like you'll be getting yourself a full 328i brake setup to put on for track...

Hey thanks! Yeah actually the wheels on there right now were drilled for a Corvette since they haven't made them for a BMW yet. They fit luckily. Yeah having to pay for taking off the entire brake system to be taken off and the smaller one to be put on would suck. Might be hard to steer if I have 265s up front though which is dangerous. Well...I'll have to think about that.

Defacto · #13 (**permalink**) 03-04-2007, 08:54 PM

You should be fine with 265s up front. As long as your suspension is set up properly for it, you should really benefit from it. And as for the brake system thing, it's actually not that hard....get yourself a rudimentary in-garage lift, keep a garage full of beer, invite Keith and Blaise over, change the brakes out, go out, and TEAR IT UP!

MrBlonde · #14 (**permalink**) 03-05-2007, 01:59 AM

Cameron, for drg racing you fit 15x4" rims up front with front runners. In the rear you fit the tallest and widest slicks that will fit. Remember slicks grow in the top end.

Of course if you fit rubber larger than can be fitted under a stock E36 M3 you'll jump out of the street car category so you'll be up against other widebody cars and racecars :-(

Highboosting///M3 · #15 (**permalink**) 03-05-2007, 08:43 AM

Quote:

Originally Posted by MrBlonde

Cameron, for drg racing you fit 15x4" rims up front with front runners. In the rear you fit the tallest and widest slicks that will fit. Remember slicks grow in the top end.

Of course if you fit rubber larger than can be fitted under a stock E36 M3 you'll jump out of the street car category so you'll be up against other widebody cars and racecars :-(

I understand Kenny. What doesn't seem fair is that if I am competing against M Coupes then i should be able to run the same a stock M Coupe can run. Not have to stick with what a stock e36 can run if the M Coupe is still in the street category.

What tire setup do you run in rear? it would be safe to say I should be allowed to run that and still be on the street list.

What do you mean by front runners? Is that a special small brake you are talking about? What do you run and where can I get them?