sixshooter

iTrader: (12)

As a single data point, I had one left rear Hoosier that had a flat spot on it that I could only really feel when I was turning right and loading it up. Going straight or turning left did not reveal the defect. And since it was in the rear I didn't feel it in the steering wheel. This is the reason I brought it up.

OGRacing

iTrader: (1)

i've done the same on a set of toyo rr. it wasn't bad until i loaded the tire. oh boy did you notice it when the tire was loaded.

z31maniac

I had one of the fancy hubs with pre-installed ARP studs fail in 1 track day......two drivers though. We skipped the last session of the day because of the amount of play in the wheel.

codrus

This was an OEM factory hub installed at a Mazda dealer to replace a hub that had been damaged by a (different) shop pressing the wrong-size stud into it. This was a decade ago, before any of the repacking/blueprinting/etc stuff was known. 100 miles of street driving later it was making noise -- most likely it was simply a manufacturing defect. The dealer swapped it again at no charge.

If the car has ABS (I may have asked this on the FB thread, but don't remember the answer if so) then that can be tricky to bleed if you managed to get air into it. There's a procedure in the factory manual to cycle the ABS for test purposes, doing this a few times while bleeding can help.

On my car, when I swapped the rear calipers out for the FM powerlites, no amount of bleeding would get a decent pedal. Eventually I upgraded it to a 1" master cylinder out of a 929, which did finally fix the problem.

--Ian

stefanst

iTrader: (1)

I know, I know- it's not about the brakes, but still....
I just realized that I read this earlier. Is that all 4 bleeders on each caliper? If so, that may be your problem. You're not supposed to open the lower bleeders. Air could get in that way. They only have lower bleeders, so they don't have to make two different calipers.

codrus

While this is true, it's worth noting that if you're flushing the system, you won't get all of the old fluid out without opening the lower bleeders. I put a couple gallons of the cheap fluid through my car when troubleshooting a bad pedal, and at one point towards the end tried bleeding the lower screws in desperation. I was surprised to get blue ATE fluid out of them, long after it had been purged from everywhere else in the system.

--Ian

nbfather

I just bought a turbo'd Miata, put new tires on it, swapped on my sons trackspeed BBK (a semi crushed his car)....The next day a deer jumped out in front of me and I flat spotted 2 brand new 225 Rivals at somewhere near 130-140 mph....With G-loc street pads. Nothing wrong with the stopping power of Wilwoods...FFS!
If you are too stupid to bleed your brakes properly, you need to take your car to somebody that knows what they are doing, before you kill yourself...or somebody else!