BBK and 15" wheel fitment

[Massive Lee]

In 2008, several dozens of e30 kits have hit the track. Either at DEs or race events. One constant question remains: wheel fitments. The front Race kit was initially designed around the Team Dynamic Pro Race 1, which had huge clearance. Then, the shape changed a bit for the Pro Race 1.2 and while still fitting, the clearances were much less. Interestingly, the same kit installed on cars with different batches of 1.2 will have different clearances... Looks like the TD production uses different molds...

After discussing with Bob Conway from New Jersey who runs front and rear kits on two racecars, and after he tested several wheels, he came to the conclusion that up to now, with the demise of the discontinued 1.0, the best wheel remains the Pro Race 2.0 as it offers ample radial and lateral clearance. The Pro Race 2.0 is a 5 spoke race wheel that is sold by Bimmerworld and others. We will see in July if the new 15" x 8" TRM wheels will fit a BBK.

Team Dynamic Pro Race 2.0 shown below

[Massive Lee]

Adam from Tennessee was kind enough to send me some pictures of his install of a front and rear kits with handbrake. Under New Jersey's Bob Conway's recommendations, Adam runs Pro Race 2 wheels on his M50 e30 track car. Enjoy the pictures and don't hesitate to ask questions.

BTW We did encounter a "slight" problem with one of the calipers. It ended up being leaky. Thanks to Carl at Wilwood, we managed to get one from California overnight, which was quite an accomplishment. I hope that Willem will be just as "lucky" as he found out that even after I ordered calipers for 1.25" rotors, he received calipers for the thinner 0.81" discs. His next event is Watkins Glen in two days. Still waiting to hear from my rep at the moment. Cross my fingers.

Full album here.

http://smg.photobucket.com/albums/v668/Lee_Vuong/Customer%20albums/

Front




Rear

[RenaissanceMan]

thanks, lee!

just to contribute some more info here, the pictures shown of my car is with pro race 2's (et25) running 3mm spacers up front. HOWEVER, there is sufficient clearance to run the wheels w/o spacers. it's just a little tight, with about 1.5-2mm clearance. i chose to add the spacers to create even more clearance 'headroom', and as you can see in the pics, there is plenty between the back of the spokes and the calipers on the fronts. the rears have even more clearance, and need no spacers, either. (see pics).

by the way, for those wondering, you will not be able to run kosei k1's using the same caliper sizes unless you modify the calipers. the inner diameter of the k1's, especially at the critical area where the spokes meet the dish of the wheel, is too narrow. this is the case even if you run any reasonably sized spacer up front. i tested with k1's before doing further research and settling on the pro race 2's. the caliper edges actually will grind slightly against the inside diameter. i suppose you could file the caliper edges and run them successfully, but i wasn't willing to go that route.

btw, i will be contributing more pictures to lee's album after this weekend when i get back from barber motorsports park.

[windsor318is]

whats a setup like that run, but with 300mm rotors?

[Massive Lee]

whats a setup like that run, but with 300mm rotors?

The rotors on the picture are 300mm x 32mm at ALL four corners. Being Heavy Duty rotors, they can take a lot of beating, don't worry.

For prices, please visit the website.
Sport, Race and Rear kits are in stock.

Lee

[cheades]

Looks good Lee, hopefully the D-Force 15's will fit along with the new TRM 15's. Be nice to have a few more choices before going up in size.

[e30polak]

Nice meaty tires on those rims...fuck stretch!!!:hitler:

[Massive Lee]

Looks good Lee, hopefully the D-Force 15's will fit along with the new TRM 15's. Be nice to have a few more choices before going up in size.

I had a first look at the 15" D-Force wheels, and also received some preliminary technical drafts a couple of months ago. Unless some aspects of the wheel have changed, I think they will be great track wheels, but might not offer enough clearance for a BBK. The barrels are not big enough around the caliper, where they meet the spokes. The radius doesn't clear the caliper, and the spokes hit it. Nonetheless, it is possible that the design has changed in the meanwhile.

15" x 8" TRM wheels will be a great fitment for 225.50.15 track tires.

[Massive Lee]

For those who wanted to know if the Team Dynamic Pro Race 1.2 indeed fitted. Yes it does fits. Maybe want to use 3mm spacers for extra clearance.

Here's Willem at Watkins this weekend. Being wet, the track might not have allowed his front brakes to fully "express".

[Massive Lee]

I test fitted a Sport kit with Kosei K1 wheel without any spacer. Let's say that while the wheel fits over the set-up, the clearance is not enough and will require to slightly grind the tip of each caliper to clear the barrel where the diameter is reduced. The Sport kit can use the Superlite caliper, but it can also be substituted with a Dynalite caliper, which offers a bit more lateral clearance bt less radial clearance (minus 1mm). The Race and Sport kits were initially designed for a Superlite, and a Forged Dynalite which no longer exists. The original Dynalite was stiffer than a billet Dynalite and offered a bit more clearance as it did not have as many sharp edges on it body.

Lee

[Massive Lee]

Kosei K1 and Race kit

Many racers have stacks of Kosei K1 wheels in their garage. And it is too bad that they cannot be used, as is, with the front e30 Race kit without major spacing out. Nonetheless, I have been working with James Posig at www.jmttrackcars.com to see what can be done to make them fit. James currently has wide Hoosiers mounted on 15" x 7" K1s. He already had thin spacers to clear the struts. After installing the kit and the wheels, he determined that a "straight" fit was a no-no but could be achieved with some "modifications". So we discussed and tested solutions that didn't involve using huge spacers and wheels sticking out the fenders. Basically, we elected to shave some unneeded material off the outer ends of the caliper to clear the wheel. I will soon have pictures to show to what extend. Removing a bit of the casting safely cleared the wheel while not reducing any stiffness from the caliper. Just unneeded aluminum was removed. A bit of black paint and nobody will notice. Balancing weights had to be relocated though.

I also did some testing this weekend, by mounting and test fitting Superlite and Dynalite calipers. Despite being a bigger caliper, the Superlite uses a smaller radius and thefore has more radial clearance. 1mm more gap than a Dynalite. I was puzzled and checked with Wilwood's data, which confirmed my tests.

Superlite on 11.75" rotor as a 169.9mm radius

http://www.wilwood.com/PDF/fl120.pdf

Dyna Pro on 11.75" rotor as a 170.9mm radius

http://www.wilwood.com/PDF/fl196.pdf

BNDL on 11.75" rotor as a 170.9mm radius

http://www.wilwood.com/Products/001-Calipers/017-BNDL/index.asp#

The Sport kit with Superlite calipers will also fit a K1 if the same amount of material is removed as with th Race kit, while still allowing to keep the weights in their original location.

Lee

[hendrik]

For those who wanted to know if the Team Dynamic Pro Race 1.2 indeed fitted. Yes it does fits. Maybe want to use 3mm spacers for extra clearance.

Here's Willem at Watkins this weekend. Being wet, the track might not have allowed his front brakes to fully "express".

track actually wasn't wet at all. For some reason the way the picture came out it looked like it was wet. I just bought those wheels new and they fit well. I loved the race kit at the Glen. They worked great!!!!

[Massive Lee]

So here's the little "surgery" that was done to fit the Race kit on 15" x 7" Kosei K1 wheels. The wheels offer great lateral clearance but nothing extraordinary with radial clearance. Something has to be done. An 8mm spacer was used for the wide Hoosier to clear the strut. Balancing weight were relocalized.

[BUDNUNTA]

Just got my sport kit from Lee.
Ill be putting it on my 318is with 15x7 et27 Kosei K1s.
Hopefully it'll fit with out too much grinding.

Is there a torque spec for the rotor to hat bolts?




Hunter

[Massive Lee]

Hi Mike.

Hoping you got luckier than the other client in San Diego who received two different rotors. Duh. Wonder what the guys are smoking in California.

Torque of the hat-to-rotor bolts should be around 30ft.lbs but honestly I prefer "feeling" them by hand. But f you insist on a torque value , then the 5/16" - 24 thread sockethead cap screws should be torqued dry at 32ft.lbs but I'd say 30 ft.lbs. Don't use any lub or Loctite. Nuts are self locking.

Sorry for the delay. Starting in mid August, all Wilwood parts will be shipped directly from Emery Motorsport in Illinois, and full kits will be available from there too. I hope to have better quality control on Wilwood components and faster shipping in the future. We also have teamed up to produce our own rotors in 300, 332 and 355mm and competitive prices. We will offer plain rotors. No grooves. No holes. Less wear on pads.

Lee