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Optimum Performance's latest activity
Optimum Performance
replied to the thread
Parking brake adjustment issues
.
There is a parking brake adjustment procedure. ie don't just crank down on the nut randomly.
Thursday at 10:45 AM
Optimum Performance
reacted to
NightmareMoon's post
in the thread
Parking brake adjustment issues
with
Like
.
Yea, its in the caliper, but if you overtighten the cable it can hit physical stops before the self adjusting mechanism can engage, so...
Thursday at 10:07 AM
Optimum Performance
replied to the thread
Parking brake adjustment issues
.
Yes, the parking brake mechanism in the caliper screws out the piston to account for pad wear.
Thursday at 10:07 AM
Optimum Performance
reacted to
John S's post
in the thread
Parking brake adjustment issues
with
Like
.
I'm not aware the S550 platform ever used a self adjusting ratchret contraption on the handle like older generations, is the...
Thursday at 10:03 AM
Optimum Performance
replied to the thread
2015 right rear brake noise?? HELP!!!!!!!!!
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Also pull apart the bolts and boots, one caliper bolt on each side has a rubber bushing on the end. Make sure all of these parts are...
Tuesday at 10:53 AM
Optimum Performance
reacted to
Therealmattlex's post
in the thread
2015 right rear brake noise?? HELP!!!!!!!!!
with
Like
.
2 things I would try. If the brake pads don't have a nice bevel on the leading and trailing edge, Bevel them to a 45° angle. That can...
Tuesday at 10:51 AM
Optimum Performance
replied to the thread
Gen 3 spark plug debate??!
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The 548's will work but the 589's are what is in G3 Coyotes due to the potential for higher combustion temperatures with DI and...
Tuesday at 10:12 AM
Optimum Performance
replied to the thread
Red Loctite on Caliper Bolts W715623-S439 4X
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Those come right out, I would just use some Blue Medium Strength on your existing ones and save these for when you need them.
Aug 15, 2026
Optimum Performance
replied to the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
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I think you are thinking of skid pad...not a place were you can carry 3 digit speeds.
Aug 14, 2026
Optimum Performance
replied to the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
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Recaro's don't do much better for XL shirt wearers.
Aug 14, 2026
Optimum Performance
reacted to
Lightningblue5's post
in the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
with
Like
.
I donāt have the Recaro seats so it was harder to stay planted in these seats. Overall though it wasnāt as bad as some other tracks that...
Aug 14, 2026
Optimum Performance
reacted to
mavisky's post
in the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
with
Like
.
I'll be waiting. It's one thing to cross over the traction threshold while pushing 10/10ths in a competition setting. I've done it...
Aug 14, 2026
Optimum Performance
replied to the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
.
Came here to say that, my knees take a beating holding me in the seat at tracks like Thompson.
Aug 14, 2026
Optimum Performance
reacted to
Lightningblue5's post
in the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
with
Like
.
In my experience, itās not a big deal. A street car on street tires isnāt going to pull as many Gās as a race car. I also came from...
Aug 14, 2026
Optimum Performance
reacted to
larr12's post
in the thread
What did you do to your S550 Mustang today?!
with
Like
.
New rotors and Power Stop Z26 brake pads. Forgot to take a pic of the brakes but here's one of the @Optimum Performance brake hardware...
Aug 10, 2026
Optimum Performance
replied to the thread
GT 350 Brake Question
.
Really can't go by photos online, they haven't been cross drilled since 2018-2019.
Aug 9, 2026
Optimum Performance
replied to the thread
2021 GT rear brake options....
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You have to hold it down for a while to shut it "off" but it's never truly off. Running track mode is leaving everything on, it just...
Aug 8, 2026
Optimum Performance
replied to the thread
2021 GT rear brake options....
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Wilwood offers a rear kit that is around $2500.
Aug 8, 2026
Optimum Performance
replied to the thread
2021 GT rear brake options....
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Traction control off doesn't mean the Stability is off. While it will let you spin the tires, it still works very hard to prevent you...
Aug 8, 2026
Optimum Performance
reacted to
RandyHayes's post
in the thread
2015 right rear brake noise?? HELP!!!!!!!!!
with
Like
.
Wish I would have kept it.
Aug 7, 2026
Optimum Performance
reacted to
SHOdaddy68's post
in the thread
Tire sensors
with
Like
.
Batteries are not replaceable. The entire sensor must be replaced
Aug 7, 2026
Optimum Performance
reacted to
The Spider House's post
in the thread
Tire sensors
with
Like
.
Yes they do. Shelf life seems to be varied but anything at about 5 or 6 years onwards and they are at risk of losing battery power.
Aug 7, 2026
Optimum Performance
reacted to
RandyHayes's post
in the thread
2015 right rear brake noise?? HELP!!!!!!!!!
with
Like
.
Yes, you can feel the ABS when hard braking on the street. OEM pads were first, Stoptec ceramic second and Hawk last all made the same...
Aug 6, 2026
Optimum Performance
reacted to
RandyHayes's post
in the thread
2015 right rear brake noise?? HELP!!!!!!!!!
with
Like
.
Towards the end of the video you can hear when I tapped the brakes it goes away for a second.
Aug 6, 2026
Optimum Performance
replied to the thread
2015 right rear brake noise?? HELP!!!!!!!!!
.
But you can get the pedal to vibrate under hard braking on the street (panic stop)? Brake pads usually squeal, not the sound you...
Aug 6, 2026
Optimum Performance
reacted to
RandyHayes's post
in the thread
2015 right rear brake noise?? HELP!!!!!!!!!
with
Like
.
Yes, I rotated the tires after track days no change.
Aug 6, 2026
Optimum Performance
reacted to
RandyHayes's post
in the thread
2015 right rear brake noise?? HELP!!!!!!!!!
with
Like
.
Hello Tommy, the brake bleeder works great I bought from you. No ABS light and it doesn't change when fuse and dyno plug pulled. I'll...
Aug 6, 2026
Optimum Performance
replied to the thread
2015 right rear brake noise?? HELP!!!!!!!!!
.
That does not sound like a brake rotor/pad issue. Have you tried swapping wheels and tires around? You have zero ABS lights, you can...
Aug 6, 2026
Optimum Performance
reacted to
RandyHayes's post
in the thread
2015 right rear brake noise?? HELP!!!!!!!!!
with
Wow
.
Aug 6, 2026
Optimum Performance
replied to the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
.
Yes, the designer tried to take advantage of the landscape. There was a section of flat track I carried so much speed (90mph) a stock...
Aug 5, 2026
Optimum Performance
reacted to
Lightningblue5's post
in the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
with
Like
.
From all the footage Iāve seen of Palmer, it looks pretty wild. It reminds me of Sonoma Raceway in California with the elevation changes.
Aug 5, 2026
Optimum Performance
replied to the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
.
Thompson is equivalent to Wachusetts Bunny Hill. Palmer is an experience. Huge elevation changes and massive speed.
Aug 5, 2026
Optimum Performance
reacted to
Lightningblue5's post
in the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
with
Haha
.
Palmer is pretty close to me. How does it compare to Thompson in terms of the overall experience?
Aug 5, 2026
Optimum Performance
replied to the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
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I ran Palmer before it was finished, so EXACTLY.
Aug 5, 2026
Optimum Performance
replied to the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
.
Drifting is not the fastest way....in a street car with walls with another human on board. Instructors tend to frown on dying.
Aug 5, 2026
Optimum Performance
reacted to
mavisky's post
in the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
with
Like
.
Let's see some of those videos of you "wagging the tail out" at the track. The last thing I would want as an instructor with a first...
Aug 5, 2026
Optimum Performance
replied to the thread
10r80 trans fluid kits ?
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Just bring it to a shop that does the fluid exchange with a filter change, better than just a drain and fill.
Aug 5, 2026
Optimum Performance
replied to the thread
GT 350 Brake Question
.
BRRF 2002 X 1 LF ROTOR BRRF 2003 X 1 RF ROTOR BRRF 2004 X 2 REAR ROTOR BRF 2057 X 1 FRONT PADS BRF 2024 X1 REAR PADS
Aug 5, 2026
Optimum Performance
replied to the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
.
All I heard from the passenger seat was "Straighten your wheel" everytime we approached it.
Aug 5, 2026
Optimum Performance
reacted to
Mach VII's post
in the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
with
Haha
.
When I rode at Thompson my ride-in instructor giggled like a school girl every time we hit that jump lol
Aug 5, 2026
Optimum Performance
reacted to
Lightningblue5's post
in the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
with
Like
.
Ha, I didnāt want to push my luck on a track I wasnāt familiar with and one with so many close barriers. I had enough sliding action in...
Aug 4, 2026
Optimum Performance
reacted to
Lightningblue5's post
in the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
with
Like
.
He does race there and took me for a ride in his Mustang race car. Definitely a guy to listen to when it comes to that track. Thanks for...
Aug 4, 2026
Optimum Performance
replied to the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
.
He showed you the fast line into the esses. Aim for the flagger at the barrels and turn in late. He either races there and/or had...
Aug 4, 2026
Optimum Performance
reacted to
Lightningblue5's post
in the thread
GT350 Track Day! First time at Thompson Speedway with POV Footage
with
Like
.
Hey everyone, Iām thrilled to be back in a GT350! I recently took my car (2020 GT350 w/Handling pack) to the track for the first time...
Aug 4, 2026
Optimum Performance
replied to the thread
Ford Racing Branding Now Appearing on Production Cars
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Yes, you will see it trickle out more and more. Ford sent us the Ford Racing Clip Art for our new website because that was my question...
Aug 3, 2026
Optimum Performance
reacted to
Mach 307's post
in the thread
Ford Racing Branding Now Appearing on Production Cars
with
Like
.
Not that this is really news, as itās expected, but looks like Ford is finally switching over to Ford Racing branding on their...
Aug 3, 2026
Optimum Performance
replied to the thread
What Rear Hubs to Get?
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Use either of the highlighted yellow ones.
Aug 3, 2026
Optimum Performance
reacted to
Lorne34's post
in the thread
GT 350 Brake Question
with
Haha
.
The stock rotors and pads are amazing. I track 1-2 times a year and so I leave the stock stuff on. Very confidence inspiring at the...
Aug 1, 2026
Optimum Performance
replied to the thread
One Piece Drive Shaft - Carbon Fiber or Aluminum
.
Gulfcoast all day every day. CF doesn't come through the cabin when it fails.
Jul 27, 2026
Optimum Performance
reacted to
Jjmoberg's post
in the thread
One Piece Drive Shaft - Carbon Fiber or Aluminum
with
Like
.
Gulf Coast Carbon Fiber here. Had it on about a week. Seems very smooth up to 120. I have a little more vibration than before, but I...
Jul 27, 2026
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