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Old 05-10-2018, 02:57 AM   #1
gti_speed
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Default DBA XP+735 Brake Pads - 2016 STI

So finally got around get breaking in the new DBA XP+735 Pads on my 2016 STI. Thanks to KNSBrakes on the sweet DBA Combo deal! Unfortunately the weather's been a little cold and I haven't made it out to the big boy track yet to test them there but hopefully I'll get out soon!

Setup Info:
Brakes - OEM Brembo Calipers, OEM Lines, DBA XP+735 Pads, DBA 4000T3 Rotors, ATE TYP200 Fluid, Dust Shields are still on.

Suspension - TEIN MonoFlex Dampers, Swift Springs 650F/650R, Eibach Front Bar

Tires/Wheels - 275/35/18 Bridgestone RE71R - 18x9.5 Rota Slipstream, 275/35/18 Hoosier A7 - 18x9.5 Mach V Wicked Awesome

Engine - Full Flex Fuel Factory Turbo Setup (It's Nice!)

Initial Impressions:
Whoa these Kangaroo Paws are loud!!! They let me know I'm slowing down haha.
Initial bite is great with a nice progressive feel as pressure is applied.
These feel pretty similar to the Hawk DTC30's but are wayyyy cheaper!

Initial Impressions after ~500mi:
Still get a little bit of squeaking when coming to a slow stop, it's very faint in comparison to the freight train that was the Hawk DTC30 I had previously.
Some dust as expected but nothing too crazy.

AutoX Impressions:
Had my first event on these, it was an SCCA Solo Nationals Event in Pittsburgh (Took 1st in ASP out of a whole 5 cars, NBD...) and was really cold, like 40F! These came up to temp by the end of my first run and stayed relatively warm across the remaining 5 runs between my co-driver and I in the morning. On Day 2 we were able to get some heat going since there were less drivers and these things really started to work well and I was even able to lock up the Hoosiers! Really looking forward to driving on these when it's warmer.

Here is a video of me lighting them up in 1st gear when they were cold. Was a little surprised that a 30mph slowdown could cause sparks like that!

The DBA rotors just look badass...


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Last edited by gti_speed; 05-10-2018 at 09:13 AM. Reason: Adding Content
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Old 05-10-2018, 08:58 AM   #2
KNS Brakes
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Thank you for the review.

We are getting more interest in all of the DBA compounds as word gets out.

-Ken
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Old 06-04-2018, 12:38 PM   #3
gti_speed
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Just got done with another autocross event this weekend using these pads on the STI and we finally had some warm weather!!! These are absolutely amazing with some heat in them, great modulation for trail-braking around an autocross course with a very nice progressive bite that doesn't feel too stabby if you need a gentle correction mid turn. They slow the car down really fast and my co-driver was blown away by how late he could brake.

I have a track event scheduled with these on June 19th so looking forward to see how well they work there!
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Old 06-21-2018, 12:41 AM   #4
gti_speed
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Finally got a chance to track the XP+735. I've got to say these are a pretty darn good track pad for the $. I'd put them right on par with the Hawk DTC30 that I just took off. I could hit all my same braking points as the Hawks and I didn't have to do anything weird to drive around them. Balance was great front to rear and I only had one moment where the rear tried to swap ends with me under braking but that was driver error.

I will say they can handle the heat extremely well! I've been battling whether it's a good idea to remove the front dust shields to aid cooling, some of the rubbery and plastic stuff near the rotor makes me nervous about melting. I left them on for my first stint and blew through all 3 thermal paint markings on my dba rotors haha so I guess they got up over 1100F! The track, PittRace has 3 very heavy braking zones (each is 120+mph down to 50 or 60) in a short span and can be pretty brutal on brakes. I started to get some fade towards the end of the firstsession so thought it would be best to remove the dust shields before session 2. Session 2 ended up getting Red Flagged on the outlap... So an extra 10 or so minutes got tacked on to our 3rd session. Was a little nervous about running a 30+ min session after the fade I was getting but decided to just send it and fade started to get pretty bad just as I saw the checkered flag. The pedal stayed pretty consistent, despite the fluid probably being in rough shape, so I'm thinking removing the dust shields was the way to go.

In summary... dropped a ton of time off my previous best lap (thanks to several other upgrades) great pads would buy again (Any chance an 850+ is coming out soon?)

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Old 06-21-2018, 08:44 AM   #5
Samurai Jack
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Are you running these pads only at the track or are you running these on the street as well?

If so, what are your street impressions?
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Old 06-21-2018, 10:50 AM   #6
gti_speed
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I've left the pads on since I've installed them and I think I'm finally up over 1000mi on them. The car does get driven on the street and they do squeel sometimes... I haven't been able to pin point the scenario, I think it's when they get decent heat in them. They also need a good stop to put some heat in them when you first leave your garage, initial bite isn't as hard but the car still slows down fine.

Haven't driven the car since the track day, I need to bleed the brakes but I'll post back if I notice any significant changes after the beating they took.
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Old 06-21-2018, 12:56 PM   #7
Samurai Jack
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Thanks. I'm comparing your impressions to my Carbotech XP8s which are daily driven. The DBA XP+735 are less expensive by a fair amount so that is something I am looking at.

KNS's description puts the XP8s somewhere between the XP650s and the XP+735s.

Same as the XP+735s, the XP8s need some heat in them to get them going, which can be achieved with a couple taps of the brakes.
- Once heated, they grab extremely well.
- They are dusty
- They squeal sometimes but that can be solved by a little more pressure on the brake pedal.
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Old 06-21-2018, 04:53 PM   #8
gti_speed
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The XP+735 are definitely dusty too. After the track day was over and I was inspecting brakes, I tipped the wheel over and I literally saw dust fall off it haha. That comes with the territory with this type of pad though.

Adding a little more brake pressure will make the squeel go away with these too. It really only does it with light pressure going into a full stop.
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Old 06-21-2018, 11:03 PM   #9
gti_speed
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Took the car out this evening for a little jaunt around town and the pads were dead silent. Maybe the smoked fluid helps apply less pressure or the 1100F temps finally broke them in lol.
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Old 07-13-2018, 03:17 PM   #10
gti_speed
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Had another track day this past Tuesday. This time ran a set of takeoff BFG R1S (275/35/18) which was quite the experience and dropped a little bit of time lol. These brake pads still killed it. Removing the front dust shields definitely helped keep temps down and I was able to complete 3 sessions with out major fade (still had a little). Going to remove the rear dust shields and maybe try switching to Motul RBF600 (currently using ATE TYP200) to see if that helps.
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Old 08-10-2018, 10:07 AM   #11
gti_speed
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Had another track day a few weeks ago. 3 more sessions of punishment on the front brakes of the car. No fade issues at all this time which was great. The pads are getting pretty low in the front (still plenty of life in the rear with the rear dust shields on) and I have a Time Trial event coming up this weekend so I'll be swapping the front pads for another set of the XP+735. I'm thinking the excessive heat from my first track day on them with the front dust shields prematurely wore the front. PittRace is also notorious for destroying brakes. The track has 3 120+ to 60mph and 1 100mph to 60mph braking zones all within about a min of each other.

Front Pad Life Summary:
9 20min track sessions at PittRace
18 Autocross Runs
1500mi of street driving in Pittsburgh (lots of hills)
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Old 08-10-2018, 02:18 PM   #12
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FYI the parking brake drum components are all attached to the rear dust shield. You can trim if you like.

Personally Iím not convinced removing those shields is a great idea or has a huge benefit.

How are your dust boots on your tie rods, lower ball joints and to a lesser extent CV joints looking?

Those sticky tires are gonna for sure give the pads a harder time keeping up as will more driving experience so keep an eye on them!
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Old 08-10-2018, 02:55 PM   #13
gti_speed
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Removing the front dust shields had massive benefits. Before removing them I couldn't make it more than 3 sessions without having completely overheated fluid. This last track event it was an afterthought no worries whatsoever.

All the rubbery stuff near the spindle looks ok. I just swapped it for the Whiteline Roll Center Kit.

I will say they car is getting pushed real hard and is currently putting down laptimes similar to NASA ST2 spec cars (SCCA T2) but with a fully stock interior with stereo haha.
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Old 08-10-2018, 03:12 PM   #14
uofime
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Quote:
Originally Posted by gti_speed View Post
Removing the front dust shields had massive benefits. Before removing them I couldn't make it more than 3 sessions without having completely overheated fluid. This last track event it was an afterthought no worries whatsoever.

All the rubbery stuff near the spindle looks ok. I just swapped it for the Whiteline Roll Center Kit.

I will say they car is getting pushed real hard and is currently putting down laptimes similar to NASA ST2 spec cars (SCCA T2) but with a fully stock interior with stereo haha.
Bleeding the brakes to get fresh fluid is usually the cure for that, but hey if they work great keep doing what youíre doin.
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