Requesting suspension setup assessment

[Bull Run]

Once I got the BMR CB005 & 006 installed I feel no hop, Car is "flat" thru the twisty's. Progressive springs helped my center of gravity and wide sweeping turns. I have wore out two rear Bridgestone pole position 255/45/18's down to the wear bars in less than a year, 280 treadwear,AA traction. I am going to square setup, 255/18 Firehawk Indy 500's Monday.

I have BMR CB005 and Steeda's equivalent of 006 and they definitely made a difference in firming up the front, especially on the bumps. BMR just released CB762, so I'll also try it out since it can be used with 005. I don't have experience with those Bridgestone or Firehawk tires, but tried Sumitomo HTR Z III XLs and Continental ExtremeContact Sport SLs. Both sets are noticeably better than the crappy OEM Pirelli P Zeros that came with PP, but I feel that Continental has slighter better grip than Sumitomo and is about 3 lbs lighter per tire as well.

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[Eritas]

I have BMR CB005 and Steeda's equivalent of 006 and they definitely made a difference in firming up the front, especially on the bumps. BMR just released CB762, so I'll also try it out since it can be used with 005. I don't have experience with those Bridgestone or Firehawk tires, but tried Sumitomo HTR Z III XLs and Continental ExtremeContact Sport SLs. Both sets are noticeably better than the crappy OEM Pirelli P Zeros that came with PP, but I feel that Continental has slighter better grip than Sumitomo and is about 3 lbs lighter per tire as well.

I have the Conti Sport on my car currently, and short of the much more expensive PS4S, they are probably the best tire in its category all around from ride to wet and dry grip. The 500's are pretty good but one of my BMW buddies has them on his car and said they suck in the rain, but hold up well on track.

 

[valentinoamoro]

I have had these tires on my GT for over a year now. My 2 cents:
It's a really strong performance tire. With the Bridgestone family, this is sold internationally as the Potenza Adrenaline RE003. It wont grip like a warm RE71R, but it also doesnt have that tires shitty ride, horrible road noise, chunking and wear. Totally different tire. It's closer to their awesome RE011 tires.

Whats good - consistent grip at the limit and good fall off profile (I autocross these), ridiculously good instant steering response, low noise, good ride, good wear, fantastic price. The OEM Pirellis had good grip once warmed up but inconsistent limit handling, terrible when cold, bad ride, bad noise.

Whats OK - grip in the wet is much better than OEM Pirellis, esp below 65 but Contis and Michelins are better.

Whats shitty - these hydroplane easily. Be careful. Steering feedback is not great. This is because of the design and profile of the tread. On the other hand, the advantage of this is that this tire does not want to tramline with wide fronts.

Cant recommend these enough. Other than hydroplaning and steering feedback, every bit as good as the old PSS I had on my BMW. Once you factor the price, its ridiculous. Makes a lot of sense on GT's given the high burn rate of tires thanks to the weight and torque.

 

[Bull Run]

I have the Conti Sport on my car currently, and short of the much more expensive PS4S, they are probably the best tire in its category all around from ride to wet and dry grip. The 500's are pretty good but one of my BMW buddies has them on his car and said they suck in the rain, but hold up well on track.

Thanks for the feedback, I used to have staggered setup (255/40 19" front, 285/35 19" back) based on the Tirerack.com recommendation for lightest wheels they have for Mustangs. Found out that despite what the Tirerack says on their website, 19X9.5" wheels for the rear also fit in the front (minus wheel caps unless using spacers), so picked up a set of these wheels and Continentals at the same time. I'll probably go with them for all four corners or PS4s (my friend uses them on his 350R, switched over from Cup 2s because they didn't last long for track duty) once the current set wears out.

 

[Bull Run]

Whats good - consistent grip at the limit and good fall off profile (I autocross these), ridiculously good instant steering response, low noise, good ride, good wear, fantastic price. The OEM Pirellis had good grip once warmed up but inconsistent limit handling, terrible when cold, bad ride, bad noise.

I felt that OEM Pirellis didn't have good grip even during the hot AZ summer. Sumitomos at mid-50s felt like they have better traction than Pirellis at 100+ degrees. Granted, Pirellis I had were 255's whereas Sumitomos are 285s.

 

[Eritas]

Thanks for the feedback, I used to have staggered setup (255/40 19" front, 285/35 19" back) based on the Tirerack.com recommendation for lightest wheels they have for Mustangs. Found out that despite what the Tirerack says on their website, 19X9.5" wheels for the rear also fit in the front (minus wheel caps unless using spacers), so picked up a set of these wheels and Continentals at the same time. I'll probably go with them for all four corners or PS4s (my friend uses them on his 350R, switched over from Cup 2s because they didn't last long for track duty) once the current set wears out.

I still have stock, staggerrd wheels. The original Pirellis we're garbage when cold, sucked in the rain, rode like crap, and we're only "reasonable" when they got some heat in them. But I think everyone feels that way. The Conti sport is excellent at everything for it's category and better than the PSS I had on before. I think the PS4S may be marginally better, but it's hard for meme justify the price difference. The 500s look good for a track day tire that might hold up a little better than my Sports during heavy abuse, but living in FL and this isn't my "track car", I didn't want to lose the ride quality or wet performance. I have a lot of confidence in the Conti during our huge downpours.

In our local Mustang group, there are a lot of GT350 guys. I'd be surprised if the PS4S lasted longer on track than the Cup2s, but I could see improvements for mainly street mileage.

 

[BmacIL]

I have had these tires on my GT for over a year now. My 2 cents:
It's a really strong performance tire. With the Bridgestone family, this is sold internationally as the Potenza Adrenaline RE003. It wont grip like a warm RE71R, but it also doesnt have that tires shitty ride, horrible road noise, chunking and wear. Totally different tire. It's closer to their awesome RE011 tires.

Whats good - consistent grip at the limit and good fall off profile (I autocross these), ridiculously good instant steering response, low noise, good ride, good wear, fantastic price. The OEM Pirellis had good grip once warmed up but inconsistent limit handling, terrible when cold, bad ride, bad noise.

Whats OK - grip in the wet is much better than OEM Pirellis, esp below 65 but Contis and Michelins are better.

Whats shitty - these hydroplane easily. Be careful. Steering feedback is not great. This is because of the design and profile of the tread. On the other hand, the advantage of this is that this tire does not want to tramline with wide fronts.

Cant recommend these enough. Other than hydroplaning and steering feedback, every bit as good as the old PSS I had on my BMW. Once you factor the price, its ridiculous. Makes a lot of sense on GT's given the high burn rate of tires thanks to the weight and torque.

Just do what I do now: one set with RE71Rs and one with something much more street/DD friendly

 

[valentinoamoro]

Just do what I do now: one set with RE71Rs and one with something much more street/DD friendly

I thought about it. Here is my issue. I love the lightweight wheels I have on my car so much, I want to drive it with these daily as its a noticeable difference. Sooooo, I pair them with the Indys and keep them on the year round.

I *could* mount RE71Rs on the OEM wheels for AutoX days but those boat anchors (both the tires and OEM wheels) are so heavy that they kind of take away from the subjective aspect of driving. Besides, now that I'm a dad of a 11 mo life's changed - I missed all the ProSolo events this season.

A smarter thing would be for me to put on some winter-ish biased all seasons on the OEMs for the long wet months here as the Indys are sketch in big puddles on the freeway.

 

[Coyote Red]

As to the puddles "on the freeway", in Texas here on the coastal bend, we have 2 lane hwy's that have water trails where the traffic has worn the grooves most people drive in. I drive a different line in my lane to avoid the water @ speed. Just drive it son.

 

[Norm Peterson]

As to the puddles "on the freeway", in Texas here on the coastal bend, we have 2 lane hwy's that have water trails where the traffic has worn the grooves most people drive in. I drive a different line in my lane to avoid the water @ speed.

This ↑↑↑ . Even regular streets and highway lanes have a "wet line".


Norm

 

[Bull Run]

Installed Corbeau A4 Wide Microsuede seats today along with double locking brackets. I'm glad I went with the wide version as they fit me like a glove and microsuede provides plenty of "butt traction". I took some fast left and right turns (enough to chirp the front tires a little bit) during the test drive and the seat held me tightly like a latin lover. I think that @Norm Peterson will be proud of me now that I no longer have a death grip on the steering wheel on hard turns. Looking forward to doing another run at the "benchmark" turn sometime next week.

An added bonus is that the seats are significantly lighter than the stock seats. Pair of these seats are about 35 lbs lighter than base seats, and while I had issues weighing my premium seats on the bathroom scale, my conservative estimate is that they are 50 lbs lighter than premium seats. Someone lighter probably can get normal-width seats and single locking brackets to save few additional pounds and couple of hundred bucks.

 

[BmacIL]

Installed Corbeau A4 Wide Microsuede seats today along with double locking brackets. I'm glad I went with the wide version as they fit me like a glove and microsuede provides plenty of "butt traction". I took some fast left and right turns (enough to chirp the front tires a little bit) turn the test drive and the seat held me tightly like a latin lover. I think that @Norm Peterson will be proud of me now that I no longer have a death grip on the steering wheel on hard turns. Looking forward to doing another run at the "benchmark" turn sometime next week.

An added bonus is that the seats are significantly lighter than the stock seats. Pair of these seats are about 35 lbs lighter than base seats, and while I had issues weighing my premium seats on the bathroom scale, my conservative estimate is that they are 50 lbs lighter than premium seats. Someone lighter probably can get normal-width seats and single locking brackets to save few additional pounds and couple of hundred bucks.

I like the look of those very much! Where did you buy? What seat brackets did you get?

 

[Bull Run]

I like the look of those very much! Where did you buy? What seat brackets did you get?

All the stores I searched had same prices for them, so I got them at American Muscle as they offer a military discount. I went with the double locking brackets.

 

[BmacIL]

All the stores I searched had same prices for them, so I got them at American Muscle as they offer a military discount. I went with the double locking brackets.

Good choice. What did you do for the airbags?

 

[Bull Run]

Good choice. What did you do for the airbags?

Nothing yet. I saw a video where some of the stock parts were installed under the seat to get the airbag light to turn off. Aside from not wanting to gut the stock seats, I think that just added weight and mess. I read in another thread that a 2-ohm resistor in the seat airbag wiring will also work. I'll see if I can find the part number for the seat harness that has the airbag wiring and make a loop with the resistor in it.

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