Adventures with Wheels, Tires and Big Brakes - TCCoA Forums
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post #1 of 31 (permalink) Old 07-29-2016, 02:08 PM Thread Starter
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Adventures with Wheels, Tires and Big Brakes

After spending the Winter accumulating new parts for my '97, and most of the Spring doing a garage makeover, I finally got started on this year's round of modifications in mid-June. Have now finished installing a bunch of SCP chassis parts, front and rear big brake upgrade, and new wheels (HRBB HR-99s in 18" x 8" and 18" x 10") and tires (Nitto NT555 Gen 2 in 245 and 285 widths).

I knew there could be an issue with the parking brake cables touching the inside of the 10" wide rims. This was made worse by the larger rear brakes which position the caliper and cable further outboard. My solution was to pull them toward the sway bar with HD zip ties. Since everything looked good, I decided to drive the car to work on Wednesday this week. Got about 15 miles from home and the left rear tire went flat. Like many HRBB designs, the HR-99s place the valve stem on the back side of the wheel. The stems had been hitting the parking brake cables and eventually the left one tore open. I had not considered this possibility, and did not hear or feel it happening!

After limping into a gas station parking lot, and thankfully not damaging either wheel or tire (these Nitto's have very robust sidewalls), I called a friend for help. We removed both rear wheels, took them to a tire shop, had shorter valve stems installed, and stuck them back on the car (all done in hot, humid conditions in work clothes). There was now clearance on the right side, but still none on the left. Pushing on the cable while tightening the zip ties solved that for now. The ultimate solution will be to install a set of the "flush mount" valve stems.

My car looks great with all the updates, but as is so often the case in car crafting, making changes often causes new and unexpected problems.
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post #2 of 31 (permalink) Old 07-29-2016, 03:44 PM
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Ya. I would not have looked out for the valve stem clearance either. I'll remember that one. Sounds like a really cool build.

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post #3 of 31 (permalink) Old 07-29-2016, 06:28 PM
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Valve stems on the inside? Is that mostly for looks? I have 19x10s in the rear with a 295/30. I have a 1/8 spacer in the rear and it's not touching the parking brake cable, but it's very close.

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post #4 of 31 (permalink) Old 07-30-2016, 05:06 PM Thread Starter
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Yes, it's all about the bling. And, frankly, a PITA to live with!

I could have added a spacer, but like the way the tires are right at the edge of the fender opening.

Last edited by Rodeo Joe; 07-30-2016 at 05:49 PM. Reason: Merged posts
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post #5 of 31 (permalink) Old 08-26-2016, 02:30 PM Thread Starter
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An update:

After worrying nonstop about the shorty rear valve stems hitting the e-brake cables and failing, I pulled the wheels off the car and had "flush" valve stems installed. Also found some 24" long, 175# tensile strength zip ties at Home Depot which I'm using to hold the cables away from the wheels. There is a passage just above the rear spring perch where a zip tie can be go through and then be used to pull the cable upward. This works, but puts a portion of the cable very close to the coil spring. And, the zip tie can fail if you actually engage the parking brake, so I'm trying not to use it at all.

As noted previously, this is a PITA situation but does allow me to run the gorgeous 18"x10" HRBB wheels.

MikeB
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post #6 of 31 (permalink) Old 10-26-2016, 11:03 AM
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In the Mark, i did the same with the rear ebrake lines...zipped them to the sway bar end link actually...seems to be holding off ok, and i try not to use the ebrake as sometimes it snaps the zip ties...if the ties bust, the inside of the rim will be contacting the ebrake cable

Car looks good by the way, the wheels really set it off!

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post #7 of 31 (permalink) Old 10-26-2016, 11:19 AM Thread Starter
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I used the ends of the rear sway bar as anchors for the zip ties on my car initially, but the new arrangement seems to be holding up fine and is a little less visible. And yes, I'm trying not to use the e-brake, which is a shame but I'm learning to live with it.

Thanks for the props!

MikeB
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post #8 of 31 (permalink) Old 10-26-2016, 12:35 PM
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If you park the car on a hill, not engaging the e-brake before letting off the footbrake puts a lot of strain on the Park pawl, as evident by the huge clunk it makes later. Those must be some kind of wheels to be worth all that.

Al
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post #9 of 31 (permalink) Old 10-27-2016, 02:41 PM Thread Starter
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The HRBBs are gorgeous, and the car looks great with them on. But, if I had it to do over, I might go with something less exotic (and expensive!), and I might change rear wheel width to 9" to reduce the e-brake cable heartburn. I did spend a looooooooong time looking for new wheels, and found very few designs that actually look good on an MN12 and haven't already been used by lots of guys.

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post #10 of 31 (permalink) Old 10-27-2016, 03:08 PM
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Quote:
Originally Posted by T6Rocket View Post
If you park the car on a hill, not engaging the e-brake before letting off the footbrake puts a lot of strain on the Park pawl, as evident by the huge clunk it makes later. Those must be some kind of wheels to be worth all that.

Al
LOL thats what i test daily at work...hopefully Dura (who made the shift system for these cars) did their math right

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post #11 of 31 (permalink) Old 10-27-2016, 03:08 PM
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Quote:
Originally Posted by MikeB View Post
The HRBBs are gorgeous, and the car looks great with them on. But, if I had it to do over, I might go with something less exotic (and expensive!), and I might change rear wheel width to 9" to reduce the e-brake cable heartburn. I did spend a looooooooong time looking for new wheels, and found very few designs that actually look good on an MN12 and haven't already been used by lots of guys.
Do you have pics of the car on here with the wheels? i dont think i have seen them! THing is spotless!

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1998 Mark VIII LSC Teredor Red, Parts car, PM me
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post #12 of 31 (permalink) Old 10-28-2016, 07:20 AM
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Where are the pics of these wheels?

Al
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04 CVPI- Brenda's car - 76k miles
Previous Fords:
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96 Cougar XR-7 4.6- Brenda's car, owned 11 years, 187k miles
88 T-Bird 3.8 - first T-Bird, owned 5 years, 206k miles
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post #13 of 31 (permalink) Old 10-28-2016, 06:38 PM
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Quote:
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...and found very few designs that actually look good on an MN12 and haven't already been used by lots of guys.
He might not answer, lol.



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post #14 of 31 (permalink) Old 10-31-2016, 09:18 AM Thread Starter
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I would be happy to provide pics if somebody can post them for me!

The wheels are the HR-99 design from Hot Rods By Boyd. They are polished aluminum with charcoal painted center sections. At present, my set are the only ones which have been manufactured with a 4.25" bolt pattern. These wheels weren't designed for a bolt pattern this small, so they had to make them with very small diameter wells for the lug nuts. This in turn forced me to use some "tuner" internal spline lugs. Not the look I had imagined, but it came out OK.

MikeB
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post #15 of 31 (permalink) Old 10-31-2016, 09:20 AM
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you can email them to me, i can host them on my photobucket if youd like...smokymance (at) gmail

LM

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post #16 of 31 (permalink) Old 10-31-2016, 09:33 AM Thread Starter
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MikeB
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post #17 of 31 (permalink) Old 10-31-2016, 02:58 PM
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Nice looking ride Mike!

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It's not a 97 Sport, it just looks like one!

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post #18 of 31 (permalink) Old 11-01-2016, 07:11 AM Thread Starter
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Thank you sir!

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post #19 of 31 (permalink) Old 11-03-2016, 12:35 AM
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post #20 of 31 (permalink) Old 11-03-2016, 07:06 AM Thread Starter
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As I have told several people, putting these wheels on my T-Bird has been like dating a supermodel: she is gorgeous, everybody wants to meet her, and she is a complete PITA to live with!
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1997 Thunderbird Sport
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post #21 of 31 (permalink) Old 11-18-2016, 06:07 PM
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Mike,

What size tire are you running? I've got 2011 mustang gt rims for my 97. The are factory 18x8 on all four corners. Also did you have any clearance issues up front?
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post #22 of 31 (permalink) Old 11-18-2016, 06:14 PM Thread Starter
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I'm running 245/45-18 in front on 8" wide wheel. Plenty of clearance and tucked in pretty well. The rears are 385/40-18 on 10" wide wheel. They also fit well other than the emergency brake cable issue.
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post #23 of 31 (permalink) Old 11-18-2016, 06:51 PM
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Mike,

Thanks. I really didn't want to go though a lot of gymnastics to figure this one out.
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post #24 of 31 (permalink) Old 11-19-2016, 08:28 AM
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Mike, I think you meant 285 wide in the rear ?
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post #25 of 31 (permalink) Old 11-19-2016, 09:38 AM Thread Starter
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Yes, that is correct. I attempted to post from my phone last evening and it didn't want to go through.

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post #26 of 31 (permalink) Old 11-21-2016, 11:55 AM Thread Starter
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Also, I'm pretty sure that 255/45-18 tires would fit in front without spacers on these 8" wide wheels. There is a full finger thickness between the tire sidewall and the spindle.
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post #27 of 31 (permalink) Old 11-21-2016, 01:58 PM
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Quote:
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Also, I'm pretty sure that 255/45-18 tires would fit in front without spacers on these 8" wide wheels. There is a full finger thickness between the tire sidewall and the spindle.
Yes, they should. I run 255/40/18 and have no clearance issues.

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post #28 of 31 (permalink) Old 11-21-2016, 02:18 PM
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Yes, they should. I run 255/40/18 and have no clearance issues.
+1 ,same here, just gotta watch ur offset
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post #29 of 31 (permalink) Old 11-21-2016, 06:09 PM
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+1 ,same here, just gotta watch ur offset
Agreed. I run +35 on a 9" wheel, from my understanding +36 is ideal for the 18x9.

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2003 Explorer WAP block with Modular Head Shop "street ported" heads and Stage 2 PI NA cams, 75mm Accufab throttle body, C&L upper intake plenum, Kooks 1.75" primary/3" collector headers, 2.5" full exhaust with mid mount Magnaflow dual in/out muffler, 24lb/hr injectors, 80mm MAF, Tuning from Don @ www.lasotaracing.com, CAI that feeds from fenderwell. Jmod, 3.73:1 TL in Mark VIII carrier, Mark VIII aluminum LCAs, 93 Mark VIII driveshaft, PBR brakes (soon to be Cobras), 18x9 wheels with 35mm offset, 255/40/ZR18 Tires, Front and Rear strut/shock bracing, GR-2 shocks, Eibach 1.5" springs, 1989 SC front and rear sway bars.
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post #30 of 31 (permalink) Old 11-22-2016, 12:16 PM
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What is your spring/strut setup up front? Stock, did you go for the SCP coilovers, or do you have some other combination?
I suspect that if you dropped your car to eliminate more of the wheel gap in the front arch you'd run into rubbing issues.
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